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:

• Apple, Mac OS X 10.4
• Apple, Mac OS X 10.4.1
• Apple, Mac OS X 10.4.10
• Apple, Mac OS X 10.4.11
• Apple, Mac OS X 10.4.2
• Apple, Mac OS X 10.4.3
• Apple, Mac OS X 10.4.4
• Apple, Mac OS X 10.4.5
• Apple, Mac OS X 10.4.6
• Apple, Mac OS X 10.4.7
• Apple, Mac OS X 10.4.8
• Apple, Mac OS X 10.4.9
• Apple, Mac OS X 10.5.4
• Apple, Mac OS X Server 10.4
• Apple, Mac OS X Server 10.4.1
• Apple, Mac OS X Server 10.4.10
• Apple, Mac OS X Server 10.4.11
• Apple, Mac OS X Server 10.4.2
• Apple, Mac OS X Server 10.4.3
• Apple, Mac OS X Server 10.4.4
• Apple, Mac OS X Server 10.4.5
• Apple, Mac OS X Server 10.4.6
• Apple, Mac OS X Server 10.4.7
• Apple, Mac OS X Server 10.4.8
• Apple, Mac OS X Server 10.4.9
• Apple, Mac OS X Server 10.5
• Apple, Mac OS X Server 10.5.1
• Apple, Mac OS X Server 10.5.2
• Apple, Mac OS X Server 10.5.3
• Apple, Mac OS X Server 10.5.4
• Apple, Mac OS X Server 10.5.5
• 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
• Gentoo, Linux
• MandrakeSoft, Mandrake Linux 2007.1 X86_64
• MandrakeSoft, Mandrake Linux 2007.1
• MandrakeSoft, Mandrake Linux 2008.0
• MandrakeSoft, Mandrake Linux 2008.0 X86_64
• 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.

For other distributions:
Apply the appropriate upgrade for your system. See References.

Consequences:

Gain Access

References:

• Apple Web site, About Security Update 2008-005 at http://support.apple.com/kb/HT2647.
• Apple Web site, About Security Update 2008-007 at http://support.apple.com/kb/HT3216.
• 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
• BID-31681: RETIRED: Apple Mac OS X 2008-007 Multiple Security 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
• GLSA-200811-05: PHP: Multiple 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
• SA31326: Apple Mac OS X Security Update Fixes Multiple Vulnerabilities
• SA32222: Apple Mac OS X Security Update Fixes Multiple Vulnerabilities
• SUSE-SR:2008:004: SUSE Security Summary Report
• USN-581-1: PCRE vulnerability
• VUPEN/ADV-2008-0570: PCRE Character Class Codepoints UTF-8 Buffer Overflow Vulnerability
• VUPEN/ADV-2008-0592: GNOME GLib Security Update Fixes PCRE Buffer Overflow Vulnerability
• VUPEN/ADV-2008-1412: PHP Multiple Buffer Overflow and Restriction Bypass Vulnerabilities
• VUPEN/ADV-2008-2268: Apple Mac OS X Code Execution and Security Bypass Vulnerabilities
• VUPEN/ADV-2008-2780: Apple Mac OS X Code Execution and Security Bypass Vulnerabilities

Reported:

Jan 28, 2008

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