PCRE character class buffer overflow
| pcre-characterclass-bo (40505) |  High Risk |
Description:
The PCRE (Perl Compatible Regular Expressions) library is vulnerable to a buffer overflow, caused by improper bounds checking when processing character classes. By sending an overly long character class containing codepoints larger than 255, a remote attacker could overflow a buffer and execute arbitrary code on the system or cause the application using the affected library to crash.
Platforms Affected:
- Canonical, Ubuntu 6.06 LTS
- Canonical, Ubuntu 6.10
- Canonical, Ubuntu 7.04
- Canonical, Ubuntu 7.10
- Debian, Debian Linux 3.1
- Debian, Debian Linux 4.0
- Mandriva, Linux 2007.1
- Mandriva, Linux 2007.1 X86_64
- Mandriva, Linux 2008.0 X86_64
- Mandriva, Linux 2008.0
- Philip Hazel, PCRE prior to 7.6
Remedy:
Upgrade to the latest version of PCRE (7.6 or later), available from the PCRE Web site. See References.
Consequences:
Gain Access
References:
- GNOME FTP site, Overview of Changes from GLib 2.14.5 to GLib 2.14.6 at http://ftp.gnome.org/pub/gnome/sources/glib/2.14/glib-2.14.6.news.
- PCRE Web site, ChangeLog for PCRE - Version 7.6 28-Jan-08 at http://pcre.org/changelog.txt.
- BID-27786: PCRE Character Class Buffer Overflow Vulnerability
- BID-29009: PHP 5.2.5 and Prior Versions Multiple Vulnerabilities
- CVE-2008-0674: Buffer overflow in PCRE before 7.6 allows remote attackers to execute arbitrary code via a regular expression containing a character class with a large number of characters with Unicode code points greater than 255.
- DSA-1499: pcre3 -- buffer overflow
- FrSIRT/ADV-2008-0570: PCRE Character Class Codepoints UTF-8 Buffer Overflow Vulnerability
- FrSIRT/ADV-2008-0592: GNOME GLib Security Update Fixes PCRE Buffer Overflow Vulnerability
- FrSIRT/ADV-2008-1412: PHP Multiple Buffer Overflow and Restriction Bypass Vulnerabilities
- MDVSA-2008:053: Updated pcre packages fix vulnerability
- SA28923: PCRE Character Class Buffer Overflow
- SA28985: GNOME GLib PCRE Character Class Buffer Overflow
- SA30048: PHP Multiple Vulnerabilities
- USN-581-1: PCRE vulnerability
Reported:
Jan 28, 2008
The information within this database may change without notice. Use of this information constitutes acceptance for use in an AS IS condition. There are NO warranties, implied or otherwise, with regard to this information or its use. Any use of this information is at the user's risk. In no event shall the author/distributor (Internet Security Systems X-Force) be held liable for any damages whatsoever arising out of or in connection with the use or spread of this information.
Copyright (c) 1994-2008 Internet Security Systems, Inc. All rights reserved worldwide.
For corrections or additions please email xforce@iss.net