SSRT4789 rev. 0 HP-UX Apache server remote Denial of Service and bypassing access restrictions
From: Security Alert (secure_at_cup.hp.com)
Date: Mon, 09 Aug 2004 12:31:49 GMT
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HP SECURITY BULLETIN
HPSBUX01069 REVISION: 0
SSRT4789 rev. 0 HP-UX Apache server remote Denial of Service and
bypassing access restrictions
There are no restrictions for distribution of this Bulletin
provided that it remains complete and intact.
The information in this Security bulletin should be acted upon
as soon as possible.
INITIAL RELEASE: 08 August 2004
POTENTIAL SECURITY IMPACT: Remote Denial of Service and bypass
of access restrictions.
SOURCE: HEWLETT-PACKARD COMPANY
HP Software Security Response Team
REFERENCES: CAN-2003-0987, CAN-2003-0020, CAN-2004-0174 and
A potential security vulnerability has been identified with HP-UX
running Apache where the vulnerability could be exploited remotely
to create a Denial of Service (DoS) or to bypass access
SUPPORTED SOFTWARE VERSIONS*: ONLY impacted versions are listed.
HP-UX B.11.04 with Virtualvault 4.7, Virtualvault 4.6, or
Four potential security vulnerabilities have been reported in
Apache HTTP server (http://httpd.apache.org/). The Common
Vulnerabilities and Exposures project < http://cve.mitre.org/>
has referenced them as the candidates CAN-2003-0987,
CAN-2003-0020, CAN-2004-0174, and CAN-2003-0993.
1. mod_digest in Apache 1.3 before 1.3.31 does not properly verify
the nonce of a client response by using a AuthNonce secret.
2. Apache 1.3 before 1.3.30 does not filter terminal escape
sequences from its error logs, which could make it easier for
attackers to insert those sequences into the terminal emulators
containing vulnerabilities related to escape sequence handling.
3. Apache 1.3 before 1.3.30, when using multiple listening sockets
on certain platforms, allows remote attackers to cause a Denial
of Service (blocked new connections) via a "short-lived
connection on a rarely-accessed listening socket."
4. mod_access in Apache 1.3 before 1.3.30, when running on
big-endian 64-bit platforms, does not properly parse Allow/Deny
rules using IP addresses without a netmask. This could allow
remote attackers to bypass intended access restrictions.
Note: To determine if a system has an affected version,
search the output of "swlist -a revision -l fileset"
for an affected fileset. Then determine if the
recommended patch or update is installed.
HP-UX B.11.04 Virtualvault A.04.70
action: install PHSS_30944 or subsequent
action: install PHSS_31058 or subsequent
HP-UX B.11.04 Virtualvault A.04.60
action: install PHSS_30946 or subsequent
action: install PHSS_31057 or subsequent
HP-UX B.11.04 Virtualvault A.04.50
action: install PHSS_30647 or subsequent
action: install PHSS_30648 or subsequent
HP-UX B.11.04 HP Webproxy A.02.10
action: install PHSS_30950 or subsequent
HP-UX B.11.04 HP Webproxy A.02.00
action: install PHSS_30949 or subsequent
END AFFECTED VERSIONS
HP has made the following patches available:
PHSS_30944 Virtualvault 4.7 IWS update
PHSS_31058 Virtualvault 4.7 OWS update
PHSS_30946 Virtualvault 4.6 IWS update
PHSS_31057 Virtualvault 4.6 OWS update
PHSS_30647 Virtualvault 4.5 IWS update
PHSS_30648 Virtualvault 4.5 OWS update
PHSS_30950 Webproxy server 2.1 update
PHSS_30949 Webproxy server 2.0 update
MANUAL ACTIONS: No
BULLETIN REVISION HISTORY:
Revision 0 - 5 August 2004
* The software product category that this Security Bulletin
relates to is represented by the 5th and 6th characters of the
Bulletin number: GN=General, MA=Management Agents,
MI=Misc. 3rd party, MP=HP-MPE/iX, NS=HP NonStop Servers,
OV=HP OpenVMS, PI=HP Printing & Imaging, ST=HP Storage,
TU=HP Tru64 UNIX, TL=Trusted Linux, UX=HP-UX, VV=Virtual Vault
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HP-UX SPECIFIC SECURITY BULLETINS*:
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Or via anonymous ftp:
The HP-UX Security Patch Matrix, updated daily, categorizes
security patches by platform/OS release, and by Bulletin topic.
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For information on the Security Patch Check tool, see:
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