SecurityFocus Microsoft Newsletter #130

From: Marc Fossi (mfossi@securityfocus.com)
Date: 03/24/03

  • Next message: Justin Derry: "USB Tokens"
    Date: Mon, 24 Mar 2003 13:55:38 -0700 (MST)
    From: Marc Fossi <mfossi@securityfocus.com>
    To: Focus-MS <focus-ms@securityfocus.com>
    
    

    SecurityFocus Microsoft Newsletter #130
    ---------------------------------------

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    I. FRONT AND CENTER
         1. IDS Logs in Forensics Investigations: An Analysis of a...
         2. Remote Desktop Management Solution for Microsoft
         3. The Promise and Peril of Palladium
         4. Why the Dogs of Cyberwar Stay Leashed
         5. SecurityFocus DPP Program
    II. MICROSOFT VULNERABILITY SUMMARY
         1. XChat Server Strings Buffer Overflow Vulnerability
         2. MyAbraCadaWeb Path Disclosure Vulnerability
         3. MyAbraCadaWeb Search Engine Cross-Site Scripting Vulnerability
         4. Protegrity Secure.Data XP_PTY_Insert Buffer Overflow Vulnerability
         5. BitchX Remote Cluster() Heap Corruption Vulnerability
         6. SIPS User Information Disclosure Vulnerability
         7. Samba SMB/CIFS Packet Assembling Buffer Overflow Vulnerability
         8. McAfee ePolicy Orchestrator HTTP GET Request Format String...
         9. McAfee ePolicy Orchestrator Information Disclosure Vulnerability
         10. Microsoft Windows 2000 ntdll.dll Buffer Overflow Vulnerability
         11. Protegrity Secure.Data XP_PTY_CheckUsers Buffer Overflow...
         12. Protegrity Secure.Data XP_PTY_Select Buffer Overflow...
         13. Multiple BitchX Remote Client-Side Buffer Overflow...
         14. BitchX Remote BX_compress_modes() Buffer Overflow Vulnerability
         15. TCPDump Malformed RADIUS Packet Denial Of Service Vulnerability
         16. BitchX Remote Send_CTCP() Memory Corruption Vulnerability
         17. BitchX Remote cannot_join_channel() Buffer Overflow...
         18. Samba REG File Writing Race Condition Vulnerability
         19. Cyber-Cats Chitchat PHP Message Board/Guestbook Password File...
    III. MICROSOFT FOCUS LIST SUMMARY
         1. Anyone have hard evidence of problems with Windows Automatic...
         2. MS03-007 Round-up (Thread)
         3. Expire accounts from Active Directory after a period of...
         4. write permissions for IIS (Thread)
         5. Microsoft Security Advisory MS 03-007 (Thread)
         6. FW: Microsoft Security Advisory MS 03-007 (Thread)
         7. Article Announcement: Remote Desktop Management Solution for...
         8. Microsoft Security Advisory MS 03-007 - Problems (Thread)
         9. Exchange/MAPI/RPC (Thread)
         10. SecurityFocus Microsoft Newsletter #129 (Thread)
         11. AD replication - IP site to site encryption? (Thread)
    IV. NEW PRODUCTS FOR MICROSOFT PLATFORMS
         1. F-Secure Anti-Virus for Microsoft Exchange
         2. QualysGuard Intranet Scanner
         3. pcAnywhere
    V. NEW TOOLS FOR MICROSOFT PLATFORMS
         1. NetMap network scanner v0.2.1
         2. East-Tec File Shredder v1.0
         3. yavipin-conf v0.0.1
    VI. SPONSOR INFORMATION

    I. FRONT AND CENTER
    -------------------
    1. IDS Logs in Forensics Investigations: An Analysis of a Compromised
    Honeypot
    By Alan Neville

    This paper will deconstruct the steps taken to conduct a full analysis of
    a compromised machine. In particular, we will be examining the tool that
    was used to exploit a dtspcd buffer overflow vulnerability, which allows
    remote root access to the system. The objective of this paper is to show
    the value of IDS logs in conducting forensics investigations.

    http://www.securityfocus.com/infocus/1676

    2. Remote Desktop Management Solution for Microsoft
    by Artur Maj

    One of the many challenges facing Microsoft administrators is how to
    manage remote systems in a secure manner? In the world of the UNIX the
    answer is quite simple: using the SSH protocol is sufficient. Thanks to
    the SSH, we can manage remote systems not only in the text mode, but we
    can also run remote X-Window applications by using the protocol tunneling
    technique. And all of that by using strong cryptography, which protects
    transmitted data from unauthorized access.

    http://www.securityfocus.com/infocus/1677

    3. The Promise and Peril of Palladium
    By Tim Mullen

    Whether Microsoft's ambitious project is a security solution or a Trojan
    horse depends much on the company's intentions.

    http://www.securityfocus.com/columnists/148

    4. Why the Dogs of Cyberwar Stay Leashed
    By Mark Rasch

    The United States could try out its much-hyped "cyberwarfare" capabilities
    in Iraq... but it would probably be illegal.

    http://www.securityfocus.com/columnists/149

    5. SecurityFocus DPP Program

    Attention Universities!! Sign-up now for preferred pricing on the only
    global early-warning system for cyber attacks - SecurityFocus DeepSight
    Threat Management System.

    Click here for more information:
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    II. BUGTRAQ SUMMARY
    -------------------
    1. XChat Server Strings Buffer Overflow Vulnerability
    BugTraq ID: 7089
    Remote: Yes
    Date Published: Mar 14 2003 12:00AM
    Relevant URL:
    http://www.securityfocus.com/bid/7089
    Summary:

    XChat is a freely available, open source IRC client. It is available for
    the the Unix, Linux, and Microsoft Windows platforms.

    XChat IRC client has been reported vulnerable, under certain
    circumstances, to a buffer overflow condition.

    It has been reported that due to a lack of both, sufficient bounds
    checking and string termination, two malformed non-terminated server
    supplied strings may be stored contiguously in a fixed internal memory
    buffer.

    As a result of this, a malicious IRC server may be used to pass excessive
    data to the client and overwrite memory adjacent to the deficient buffer.
    If this memory contains crucial saved program state values the attacker
    may be able to influence the programs' flow and execute arbitrary code.

    Any code successfully executed would be in the context of the user running
    the vulnerable IRC application.

    This vulnerability was reported to affect XChat version 2.0.1 other
    versions may also be affected.

    2. MyAbraCadaWeb Path Disclosure Vulnerability
    BugTraq ID: 7126
    Remote: Yes
    Date Published: Mar 17 2003 12:00AM
    Relevant URL:
    http://www.securityfocus.com/bid/7126
    Summary:

    MyABraCaDaWeb is a web content management system. It is implemented in
    PHP and available for Unix and Linux variants and Microsoft Windows
    operating systems.

    MyABraCaDaWeb is reported to disclose path information in error messages
    when handling some invalid requests. This may occur when an invalid
    administrative ID is requested or in some other cases. The full path to
    the web root directory will be included in the error output. This
    information could be useful in further attacks against a system hosting
    the software.

    3. MyAbraCadaWeb Search Engine Cross-Site Scripting Vulnerability
    BugTraq ID: 7127
    Remote: Yes
    Date Published: Mar 17 2003 12:00AM
    Relevant URL:
    http://www.securityfocus.com/bid/7127
    Summary:

    MyABraCaDaWeb is a web content management system. It is implemented in
    PHP and available for Unix and Linux variants and Microsoft Windows
    operating systems.

    MyABraCaDaWeb provides a facility that allows users to search for
    keywords. A cross-site scripting vulnerability has been reported in
    MyABraCaDaWeb's search engine. HTML and script code are not sufficiently
    sanitized when included in URI parameters of the vulnerable search
    facility.

    This could allow creation of malicious links to the vulnerable script
    which include hostile HTML and script code. If such a link was visited by
    a web user, attacker-supplied HTML and script code could be interpreted by
    the user's browser. This would occur in the security context of the site
    hosting the software.

    4. Protegrity Secure.Data XP_PTY_Insert Buffer Overflow Vulnerability
    BugTraq ID: 7084
    Remote: Yes
    Date Published: Mar 13 2003 12:00AM
    Relevant URL:
    http://www.securityfocus.com/bid/7084
    Summary:

    Secure.Data is library designed to provide enhanced database security
    functions to Microsoft SQL Server through extended stored procedures.
    The software is developed and distributed by Protegrity.

    A problem with the software may make it possible for a user to gain
    unauthorized access to a system.

    It has been reported that Secure.Data does not properly check input in the
    xp_pty_insert function. Because of this, an attacker may be able to
    launch an attack that could result in elevated privileges.

    The problem is in a boundary condition error in the xp_pty_insert
    procedure. This extended stored procedure does not sufficiently check
    bounds on information passed to it. By passing a string of arbitrary
    length and shell code to the vulnerable procedure, an attacker could
    execute code with the privileges of the SQL Server process, typically the
    user SYSTEM.

    This problem has been reported as affecting version 2.2.3.8 and previous.

    5. BitchX Remote Cluster() Heap Corruption Vulnerability
    BugTraq ID: 7096
    Remote: Yes
    Date Published: Mar 14 2003 12:00AM
    Relevant URL:
    http://www.securityfocus.com/bid/7096
    Summary:

    BitchX is a freely available, open source IRC client. It is available for
    Unix, Linux, and Microsoft operating systems.

    BitchX has been reported prone to a heap based memory corruption
    vulnerability. Reportedly when an excessively long hostname is supplied to
    the BitchX 'cluster()' function an internal static memory buffer is
    overflowed.

    It has been reported that 1500 bytes of data may be written past the
    buffer, potentially corrupting sensitive values located in the heap.

    Although unconfirmed, due to the nature of heap corruption
    vulnerabilities, there is a potential that this issue could be exploited
    to corrupt memory management information. As a result, a hostile IRC
    server may be capable of executing arbitrary code on a target client.

    This vulnerability was reported to affect BitchX 1.0c19 earlier versions
    may also be affected.

    This issue was originally described in BID 7086 "Multiple BitchX Remote
    Client-Side Buffer Overflow Vulnerabilities" and is now being assigned a
    separate BID.

    6. SIPS User Information Disclosure Vulnerability
    BugTraq ID: 7134
    Remote: Yes
    Date Published: Mar 18 2003 12:00AM
    Relevant URL:
    http://www.securityfocus.com/bid/7134
    Summary:

    SIPS is a weblog and link indexing system. It is available for Unix and
    Linux variants in addition to Microsoft Windows operating systems.

    It has been reported that SIPS fails to authenticate users before granting
    users to user account information. As a result, it may be possible for an
    attacker to access sensitive data by making a request to a specific
    location, including the first letter of a username, followed by the full
    username.

    By gaining access to sensitive user account data it may be possible for an
    attacker to launch further attacks.

    It should be noted that this vulnerability was reported in SIPS v0.2.2
    however, other versions may also be affected.

    7. Samba SMB/CIFS Packet Assembling Buffer Overflow Vulnerability
    BugTraq ID: 7106
    Remote: Yes
    Date Published: Mar 15 2003 12:00AM
    Relevant URL:
    http://www.securityfocus.com/bid/7106
    Summary:

    Samba is a freely available file and printer sharing application
    maintained and developed by the Samba Development Team. Samba allows file
    and printer sharing between operating systems on the Unix and Microsoft
    platforms. The Samba daemon is typically run with super user privileges.

    A buffer overflow vulnerability has been reported for Samba. The
    vulnerability occurs when the smbd service attempts to re-assemble
    specially crafted SMB/CIFS packets.

    An attacker can exploit this vulnerability by creating a specially
    formatted SMB/CIFS packet and sending it to a vulnerable Samba server. The
    overflow condition will be triggered when smbd attempts to re-assemble the
    malformed packet fragments. smbd will overwrite sensitive areas of memory
    with attacker-supplied values resulting in the execution of malicious
    code.

    This vulnerability is further exacerbated by the fact that the smbd
    service runs with root privileges.

    This vulnerability affects Samba 2.0.0 to 2.2.7a. Additionally, HP
    CIFS/9000 server versions up to A.01.09.01 on HP-UX 11.0, 11.11(11i), and
    11.22 are vulnerable.

    8. McAfee ePolicy Orchestrator HTTP GET Request Format String Vulnerability
    BugTraq ID: 7111
    Remote: Yes
    Date Published: Mar 17 2003 12:00AM
    Relevant URL:
    http://www.securityfocus.com/bid/7111
    Summary:

    McAfee ePolicy Orchestrator is a product designed to remotely manage
    various policies and antivirus products. It is available for the Microsoft
    Windows operating system.

    A format string vulnerability has been discovered in the ePolicy
    Orchestrator Agent which is designed to distribute log data remotely.
    Authentication does not occur when connecting to the ePolicy Orchestrator
    Agent, thus allowing an anonymous attacker to exploit this issue.

    The format string bug occurs when processing HTTP GET requests via port
    8081. An attacker who makes a malicious request containing format
    specifiers, such as '%x' or '%n', may be capable of obtaining and writing
    to sensitive locations in memory.

    Successful exploitation of this vulnerability would allow an attacker to
    execute arbitrary commands with SYSTEM privileges.

    It should be noted that this vulnerability has been reported to affect
    McAfee ePolicy Orchestrator 2.5.1; other versions may also be affected.

    9. McAfee ePolicy Orchestrator Information Disclosure Vulnerability
    BugTraq ID: 7114
    Remote: Yes
    Date Published: Mar 17 2003 12:00AM
    Relevant URL:
    http://www.securityfocus.com/bid/7114
    Summary:

    McAfee ePolicy Orchestrator is a product designed to remotely manage
    various policies and antivirus products. It is available for the Microsoft
    Windows operating system.

    The McAfee ePolicy Orchestrator Agent listens on port 8081 and is designed
    to distribute various log data to remote users. It has been discovered
    that the ePolicy Orchestrator Agent fails to carry out any authentication
    when distributing logs. As a result, it may be possible for a remote
    attacker to obtain sensitive information which could be used to launch
    further attacks.

    It should be noted that this vulnerability has been reported to affect
    McAfee ePolicy Orchestrator 2.5.1; other versions may also be affected.

    10. Microsoft Windows 2000 ntdll.dll Buffer Overflow Vulnerability
    BugTraq ID: 7116
    Remote: Yes
    Date Published: Mar 17 2003 12:00AM
    Relevant URL:
    http://www.securityfocus.com/bid/7116
    Summary:

    The Windows 2000 library ntdll.dll contains a function that does not
    perform sufficient bounds checking.

    When a request is made to WebDAV using the methods PROPFIND, LOCK, SEARCH,
    or GET with the Translate:f header, the request is in turn passed to a
    function called GetFileAttributesExW. The GetFileAttributesExW in turn
    makes a call to the RtlDosPathNameToNtPathName_U function which is
    exported by ntdll.dll. The problem lies in that
    RtlDosPathNameToNtPathName_U relies on unsigned shorts for string lengths.
    This reliance on unsigned shorts is where the vulnerability lies.

    Proper bounds checking is not performed on this data, allowing a buffer to
    be overrun. This could result in the execution of arbitrary code with
    Local System privileges.

    There are other attack vectors that exist other than through
    GetFileAttributesExW. The following functions also call
    RtlDosPathNameToNtPathName_U and could also be potential attack vectors:

    GetShortPathNameW
    CopyFileW
    MoveFileW
    MoveFileExW
    ReplaceFileW
    CreateMailslotW
    GetFileAttributesW
    FindFirstFileExW
    CreateFileW
    GetVolumeInformationW
    DeleteFileW
    GetDriveTypeW
    GetFileAttributesExW
    CreateDirectoryW
    FindFirstChangeNotificationW
    GetBinaryTypeW
    CreateNamedPipeW
    SetFileAttributesW
    MoveFileWithProgressW
    GetVolumeNameForVolumeMountPointW
    GetDiskFreeSpaceW
    CreateDirectoryExW
    DefineDosDeviceW
    PrivMoveFileIdentityW
    GetCompressedFileSizeW
    SetVolumeLabelW
    CreateHardLinkW
    RemoveDirectoryW

    **There have been reports that this vulnerability was being actively
    exploited in the wild for some time before it was discovered and fixed by
    Microsoft. See the MSNBC link in the References section for more details
    of systems that were exploited by this vulnerability. It is also
    important to note that there is a strong possibility that this
    vulnerability was known to exist for some time prior to March 12th as
    indicated by the news story.

    11. Protegrity Secure.Data XP_PTY_CheckUsers Buffer Overflow Vulnerability
    BugTraq ID: 7083
    Remote: Yes
    Date Published: Mar 13 2003 12:00AM
    Relevant URL:
    http://www.securityfocus.com/bid/7083
    Summary:

    Secure.Data is library designed to provide enhanced database security
    functions to Microsoft SQL Server through extended stored procedures.
    The software is developed and distributed by Protegrity.

    A problem with the software may make it possible for a user to gain
    unauthorized access to a system.

    It has been reported that Secure.Data does not properly check input in the
    xp_pty_checkusers function. Because of this, an attacker may be able to
    launch an attack that could result in elevated privileges.

    The problem is in a boundary condition error in the xp_pty_checkusers
    procedure. This extended stored procedure does not sufficiently check
    bounds on information passed to it. By passing a string of arbitrary
    length and shell code to the vulnerable procedure, an attacker could
    execute code with the privileges of the SQL Server process, typically the
    user SYSTEM.

    This problem has been reported as affecting version 2.2.3.8 and previous.

    12. Protegrity Secure.Data XP_PTY_Select Buffer Overflow Vulnerability
    BugTraq ID: 7085
    Remote: Yes
    Date Published: Mar 13 2003 12:00AM
    Relevant URL:
    http://www.securityfocus.com/bid/7085
    Summary:

    Secure.Data is a library designed to provide enhanced database security
    functions to Microsoft SQL Server through extended stored procedures.
    The software is developed and distributed by Protegrity.

    A problem with the software may make it possible for a user to gain
    unauthorized access to a system.

    It has been reported that Secure.Data does not properly check input in the
    xp_pty_select function. Because of this, an attacker may be able to
    launch an attack that could result in elevated privileges.

    The problem is in a boundary condition error in the xp_pty_select
    procedure. This extended stored procedure does not sufficiently check
    bounds on information passed to it. By passing a string of arbitrary
    length and shell code to the vulnerable procedure, an attacker could
    execute code with the privileges of the SQL Server process, typically the
    user SYSTEM.

    This problem has been reported as affecting version 2.2.3.8 and previous.

    13. Multiple BitchX Remote Client-Side Buffer Overflow Vulnerabilities
    BugTraq ID: 7086
    Remote: Yes
    Date Published: Mar 13 2003 12:00AM
    Relevant URL:
    http://www.securityfocus.com/bid/7086
    Summary:

    BitchX is a freely available, open source IRC client. It is available for
    Unix, Linux, and Microsoft operating systems.

    Multiple vulnerabilities have been reported to exist in the BitchX IRC
    client. The problems occur due to a variety of client-side functions
    failing to carry out sufficient bounds checking. Specifically, a malicious
    IRC server may be capable of passing malicious data to an affected BitchX
    client, which could trigger a number of buffer overrun conditions.

    Successful exploitation of these issues may allow a malicious server to
    execute arbitrary commands on the client system with the privileges of the
    user running the vulnerable client.

    This vulnerability has been reported to affect BitchX 1.0c19. Other
    versions may also be affected.

    ** The issues in this BID have been assigned individual BugtraqIDs. The
    new BIDs are 7096, 7097, 7099 and 7100.

    This BID will be subsequently retired.

    14. BitchX Remote BX_compress_modes() Buffer Overflow Vulnerability
    BugTraq ID: 7100
    Remote: Yes
    Date Published: Mar 14 2003 12:00AM
    Relevant URL:
    http://www.securityfocus.com/bid/7100
    Summary:

    BitchX is a freely available, open source IRC client. It is available for
    Unix, Linux, and Microsoft operating systems.

    BitchX has been reported prone to a buffer overflow vulnerability.

    Reportedly, when the BitchX option 'compress_modes' is activated a
    potential circumstance for a buffer overflow condition may be created. If
    an excessive amount of data is supplied to the BitchX
    'BX_Compress_modes()' function an internal memory buffer, 'nmodes[16]',
    will be overflowed. This action may cause adjacent memory to be corrupted
    with attacker-supplied values.

    There is a potential that this issue could be exploited to corrupt crucial
    program management variables on the stack and thus seize control of
    program flow. As a result, a hostile IRC server may be capable of
    executing arbitrary code on a target client.

    Any arbitrary code executed would be in the context of the user running
    the vulnerable software.

    This vulnerability was reported to affect BitchX 1.0c19 earlier versions
    may also be affected.

    This issue was originally described in BID 7086 "Multiple BitchX Remote
    Client-Side Buffer Overflow Vulnerabilities" and is now being assigned a
    separate BID.

    15. TCPDump Malformed RADIUS Packet Denial Of Service Vulnerability
    BugTraq ID: 7090
    Remote: Yes
    Date Published: Mar 14 2003 12:00AM
    Relevant URL:
    http://www.securityfocus.com/bid/7090
    Summary:

    tcpdump is a freely available, open source network monitoring tool. It is
    available for the Unix, Linux, and Microsoft Windows operating systems.

    A vulnerability in the processing of some packet types may result in an
    inability to further use the tcpdump application.

    It has been reported that tcpdump is vulnerable to a denial of service
    when some packet types are received. By sending a maliciously formatted
    packet to a system using a vulnerable version of tcpdump, it is possible
    for a remote user to cause tcpdump to ignore network traffic from the time
    the packet is received until the application is terminated and restarted.

    The problem is in the handling of RADIUS packets. When tcpdump receives a
    maliciously crafted RADIUS packet, the application enters an infinite loop
    and ceases to further monitor network traffic. This could allow the
    passing of undetected network traffic that would typically be seen by
    tcpdump.

    16. BitchX Remote Send_CTCP() Memory Corruption Vulnerability
    BugTraq ID: 7097
    Remote: Yes
    Date Published: Mar 14 2003 12:00AM
    Relevant URL:
    http://www.securityfocus.com/bid/7097
    Summary:

    BitchX is a freely available, open source IRC client. It is available for
    Unix, Linux, and Microsoft operating systems.

    A memory corruption vulnerability has been reported in the send_ctcp()
    function which is used when handling server-supplied data. The function
    takes the length of an argument, char *to, and uses it to allocate a
    buffer on the stack. This occurs by calling the alloca() function with an
    argument of 512 - (12 + strlen(to)). Delimiter characters are later
    appended to the buffer returned by alloca().

    If a hostile IRC server were to supply a 'to' argument containing a
    length, -12, which is larger then 512 bytes, it would be possible to
    supply a negative value as the argument to alloca(). If this were to occur
    the negative value would be interpreted and a stack address used by a
    previous frame will be returned. This may allow for delimiter characters
    and a NULL value to be written to arbitrary stack memory.

    Successful exploitation of this issue may allow a malicious server to
    execute arbitrary commands on the client system with the privileges of the
    user running the vulnerable client.

    This vulnerability has been reported to affect BitchX 1.0c19. Other
    versions may also be affected.

    This issue was originally described in BID 7086 "Multiple BitchX Remote
    Client-Side Buffer Overflow Vulnerabilities" and is now being assigned a
    separate BID.

    17. BitchX Remote cannot_join_channel() Buffer Overflow Vulnerability
    BugTraq ID: 7099
    Remote: Yes
    Date Published: Mar 14 2003 12:00AM
    Relevant URL:
    http://www.securityfocus.com/bid/7099
    Summary:

    BitchX is a freely available, open source IRC client. It is available for
    Unix, Linux, and Microsoft operating systems.

    A memory corruption vulnerability has been discovered in BitchX 1.0c19.
    This issue occurs when calling the cannot_join_channel() function. If a
    channel of excessive length is supplied a buffer overflow could occur
    which may result in predefined strings being written over sensitive stack
    memory.

    As a result, it may be possible for a malicious IRC server to crash a
    vulnerable client. Although unconfirmed this vulnerability could
    potentially be leveraged to execute arbitrary commands within a target
    client.

    This vulnerability has been reported to affect BitchX 1.0c19. Other
    versions may also be affected.

    This issue was originally described in BID 7086 "Multiple BitchX Remote
    Client-Side Buffer Overflow Vulnerabilities" and is now being assigned a
    separate BID.

    18. Samba REG File Writing Race Condition Vulnerability
    BugTraq ID: 7107
    Remote: No
    Date Published: Mar 15 2003 12:00AM
    Relevant URL:
    http://www.securityfocus.com/bid/7107
    Summary:

    Samba is a freely available file and printer sharing application
    maintained and developed by the Samba Development Team. Samba allows file
    and printer sharing between operating systems on the Unix and Microsoft
    platforms. The Samba daemon is typically run with super user privileges.

    A race condition vulnerability has been reported for Samba. The
    vulnerability occurs when Samba attempts to write reg files. However, it
    may be possible to create a symbolic link in a crucial point of program
    execution that would result in the overwriting of files pointed to by the
    link. This will only occur if the files are writeable by the Samba
    process.

    Successful exploitation may cause local files to be corrupted. If files
    can be corrupted with custom data, this may result in privilege elevation.

    Full details of this vulnerability are not currently known. The BID will
    be updated as further details are disclosed.

    This vulnerability is reported to exist for Samba 2.0.0 to 2.2.7a.

    19. Cyber-Cats Chitchat PHP Message Board/Guestbook Password File Viewing Vulnerability
    BugTraq ID: 7136
    Remote: Yes
    Date Published: Mar 19 2003 12:00AM
    Relevant URL:
    http://www.securityfocus.com/bid/7136
    Summary:

    Cyber-Cats Chitchat PHP Message Board/Guestbook permits users to interact
    and communicate via a virtual community. It is available for Unix, Linux,
    and Microsoft Operating Systems.

    A problem with the software may allow a remote user unauthorized access to
    the board.

    Cyber-Cats Chitchat PHP Message Board/Guestbook does not sufficiently
    limit access to files on the local system. Because of this, an attacker
    could potentially gain access to sensitive files.

    The problem is in the limiting of access to the password file. User names
    and passwords for the board are stored in the
    $guest_board_directory/files/passwd.txt file. An attacker could gain
    access to this file and launch a brute force attack against the encrypted
    password hashes contained in the file, gaining unauthorized access to user
    accounts.

    20. Microsoft Windows PostMessage API Unmasked Password Weakness
    BugTraq ID: 7092
    Remote: No
    Date Published: Mar 13 2003 12:00AM
    Relevant URL:
    http://www.securityfocus.com/bid/7092
    Summary:

    A weakness has been reported in the Microsoft Windows PostMessage API
    which could effectively allow unmasked passwords to be copied into a
    user's clipboard or other buffer.

    PostMessage places a message in the message queue but does not
    sufficiently check the message type. EM_SETPASSWORDCHAR messages set the
    password mask character in password edit box controls. PostMessage may be
    abused in combination with EM_SETPASSWORDCHAR messages to cause an
    unmasked password to be placed into a buffer which could potentially be
    accessed through other means by an unauthorized process.

    Exploitation would require a malicious local process to wait for an
    authentication prompt to be sent to a local user by another application.
    The attacker would then have to authenticate normally. The unmasked
    password can be copied while this is occurring.

    >From this point, a further attack would be required to steal password
    credentials.

    This weakness occurs because the PostMessage API may be used in
    combination with EM_SETPASSWORDCHAR messages. This may occur from another
    process that does not belong to the process thread.

    It is possible that this weakness could be incorporated into a trojan
    horse or backdoor. Malicious local users could also potentially exploit
    this to steal authentication credentials from other users.

    III. MICROSOFT FOCUS LIST SUMMARY
    ---------------------------------
    1. Anyone have hard evidence of problems with Windows Automatic Updates? (Thread)
    Relevant URL:

    http://online.securityfocus.com/archive/88/315790

    2. MS03-007 Round-up (Thread)
    Relevant URL:

    http://online.securityfocus.com/archive/88/315792

    3. Expire accounts from Active Directory after a period of inactivity (Thread)
    Relevant URL:

    http://online.securityfocus.com/archive/88/315791

    4. write permissions for IIS (Thread)
    Relevant URL:

    http://online.securityfocus.com/archive/88/315789

    5. Microsoft Security Advisory MS 03-007 (Thread)
    Relevant URL:

    http://online.securityfocus.com/archive/88/315621

    6. FW: Microsoft Security Advisory MS 03-007 (Thread)
    Relevant URL:

    http://online.securityfocus.com/archive/88/315628

    7. Article Announcement: Remote Desktop Management Solution for Microsoft (Thread)
    Relevant URL:

    http://online.securityfocus.com/archive/88/315462

    8. Microsoft Security Advisory MS 03-007 - Problems (Thread)
    Relevant URL:

    http://online.securityfocus.com/archive/88/315452

    9. Exchange/MAPI/RPC (Thread)
    Relevant URL:

    http://online.securityfocus.com/archive/88/315376

    10. SecurityFocus Microsoft Newsletter #129 (Thread)
    Relevant URL:

    http://online.securityfocus.com/archive/88/315312

    11. AD replication - IP site to site encryption? (Thread)
    Relevant URL:

    http://online.securityfocus.com/archive/88/315307

    IV. NEW PRODUCTS FOR MICROSOFT PLATFORMS
    ----------------------------------------
    1. F-Secure Anti-Virus for Microsoft Exchange
    by F-Secure Corporation
    Platforms: Windows 2000, Windows NT
    Relevant URL:
    http://www.f-secure.com/products/anti-virus/ms-exchange/
    Summary:

    F-Secure Anti-Virus for Microsoft Exchange protects Microsoft Exchange
    users from viruses, worms and Trojans, scanning both incoming and outgoing
    messages. The product scans not only e-mail attachments, but it also stops
    viruses in documents and notes posted to public folders. With F-Secure
    Anti-Virus for Microsoft Exchange, antivirus protection is transparent and
    always on as the scanning is done on the e-mail server in real-time.

    2. QualysGuard Intranet Scanner
    by Qualys
    Platforms: N/A
    Relevant URL:
    http://www.qualys.com/?page=services/intranet/overview
    Summary:

    With QualysGuard Intranet Scanner, Qualys also protects enterprises when
    the threat comes from within the internal network. QualysGuard Intranet
    Scanner is the first network appliance that provides security audits and
    vulnerability management inside the firewall. Combined with QualysGuard,
    the Intranet Scanner provides network administrators with an integrated,
    centralized service for managing both internal and external network
    vulnerabilities.

    3. pcAnywhere
    by Symantec
    Platforms: Windows 2000, Windows 95/98, Windows NT, Windows XP
    Relevant URL:
    http://www.symantec.com/pcanywhere/Consumer/
    Summary:

    pcAnywhere is the world's leading remote control software. With powerful
    encryption and authentication, it gives you peace of mind that your remote
    sessions will be secure. Speed up performance with the new optimization
    wizard. You can also use pcAnywhere with cable and DSL modems for faster
    remote control sessions. Now it's even faster and easier to navigate
    directories on both machines when you're transferring files. Use the
    AutoTransfer function to upload or download multiple files automatically.
    Whether you need to support servers, customers, or friends, choose
    award-winning pcAnywhere, the world's best-selling remote control
    solution.

    V. NEW TOOLS FOR MICROSOFT PLATFORMS
    -------------------------------------
    1. NetMap network scanner v0.2.1
    by Joshua Corbin
    Relevant URL:
    http://members.jdweb.com/~jcorbin/netmap/
    Platforms: Perl (any system supporting perl)
    Summary:

    NetMap is a network scanner written in Perl/GTK. It is not just another
    nmap frontend. It is a modularized network prober/scanner that just
    happens to have an nmap module. Incidentally, NetMap has nothing to do
    with the network weather mapper.

    2. East-Tec File Shredder v1.0
    by EAST Technologies
    Relevant URL:
    http://www.east-tec.com/erprod/etfshred/index.htm
    Platforms: Windows 2000, Windows 95/98, Windows NT, Windows XP
    Summary:

    East-Tec File Shredder securely destroys (shreds) sensitive and private
    files beyond recovery. Simply drag & drop files to the shredder icon on
    your desktop, or select the files you want to destroy directly from the
    Windows Explorer right-click menu. The files will be gone for good.

    3. yavipin-conf v0.0.1
    by Hisham Mardam Bey
    Relevant URL:
    http://hisham.cc/files/apps/yavipin/
    Platforms: N/A
    Summary:

    yavipin-conf is a multiple client/server configuration utility for
    yavipin. It provides a parser, example configuration files, and a startup
    script which allows the user to start/stop/restart a VPN at any point. In
    syntax, the configuration is similar to that of vtun.

    VI. SPONSOR INFORMATION
    -----------------------
    This Issue is Sponsored by: SurfControl

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    Filter for SMTP and Exchange leverages multiple layers of technology to
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