[NEWS] 4D WebSTAR Multiple Vulnerabilities
From: SecuriTeam (support_at_securiteam.com)
To: firstname.lastname@example.org Date: 14 Jul 2004 10:24:59 +0200
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4D WebSTAR Multiple Vulnerabilities
4D WebSTAR is a software product that provides Web, FTP, and Mail services
for Mac OS X. There are numerous vulnerabilities that allow for an
attacker to escalate privileges or obtain access to protected resources.
* WebSTAR version 5.3.2 and prior
* WebSTAR version 5.3.3
Issue #1: Remotely Exploitable Pre-Authentication FTP overflow
There is a stack based buffer overflow within the FTP service. An attacker
can take advantage of this overflow by sending in a long FTP command. This
can happen prior to authentication. A long FTP command will trigger a
stack based memory trespass. Upon successful exploitation, an attacker
will have the privileges of the 'webstar' user and group id 'wheel'. An
attacker can gain administrative privileges by taking advantage of Issue
Issue #2: Directory Indexing of Any Directory on Host
One of the sample scripts included with WebSTAR
(/cgi-bin/ShellExample.cgi) can be used to gain a directory listing of any
directory on the server. This is done by sending in a path to the
directory followed by an asterisk ("*") as the query string. Issue
#3: File Disclosure of PHP.INI
There is a vulnerability within the WebServer that allows an attacker to
download the php.ini files located within the /cgi-bin and /fcgi-bin
directories. This can contain sensitive information about the WebServer
and the Database Server, potentially including the account and password
used by PHP to communicate with the database.
Issue #4: Local Privilege Escalation and File Overwrite Via Symbolic Links
WebSTAR will attempt to open up files via a relative path from the current
working directory. An attacker can use this vulnerability to overwrite
files with the private key of the WebServer. Due to a default umask that
creates files with global read and write privileges, an attacker create
files related to the cron subsystem that will allow a local attacker to
obtain administrative privileges.
Vendor notified: 04/05/2004
Fix available: 07/08/2004
Advisory released: 07/13/2004
4D has released an upgrade for 4D WebSTAR. Download WebSTAR 5.3.3:
Bug Fix information [URL wraps]:
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