PCRE non-UTF-8 regular expressions denial of service
| pcre-nonutf8-dos (38274) |  Medium Risk |
Description:
The PCRE (Perl Compatible Regular Expressions) library is vulnerable to a denial of service, caused by an error in the processing of "\X?\d" and "\P{L}?\d" patterns in non-UTF-8 mode. A remote attacker could exploit this vulnerability using unspecified attack vectors to cause an application linked to the vulnerable library to crash and possibly leak portions of memory.
Platforms Affected:
- Apple, Mac OS X 10.4.11
- Apple, Mac OS X 10.5.2
- Apple, Mac OS X Server 10.4.11
- Apple, Mac OS X Server 10.5.2
- 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
- Mandriva, Linux 2007.1 X86_64
- Mandriva, Linux 2007.1
- Novell, Linux Desktop 9
- Novell, Linux POS 9
- Novell, Open Enterprise Server
- Novell, Open Enterprise Server
- Novell, OpenSUSE 10.2
- Novell, OpenSUSE 10.3
- Novell, UnitedLinux 1.0
- Philip Hazel, PCRE 7.3 and prior
- SuSE, OpenSuSE 10.2
- SuSE, OpenSuSE 10.3
- SuSE, SLE SDK 10
- SuSE, SLE SDK 10 SP1
- SuSE, SuSE Linux 10.0
- SuSE, SuSE Linux 10.1
- SuSE, SuSE Linux Enterprise Desktop 10.0 SP1
- SuSE, SuSE Linux Enterprise Server 10.0
- SuSE, SuSE Linux Enterprise Server 10.0 SP1
- SuSE, SuSE Linux Enterprise Server 8.0
- SuSE, SuSE Linux Openexchange Server 4
- SuSE, SuSE LINUX Retail Solution 8
- SuSE, SuSE Linux School Server
- SuSE, SuSE Linux Standard Server 8
- SuSE, SuSE SLES 9
Remedy:
Upgrade to the latest version of PCRE (7.4 or later), available from the PCRE Web site. See References.
For Mac OS X:
Apply Security Update 2008-002, available from the Apple Web site. See References.
For other distributions:
Apply the appropriate update for your system. See References.
Consequences:
Denial of Service
References:
- Apple Web site, About Security Update 2007-009 at http://docs.info.apple.com/article.html?artnum=307179.
- Apple Web site, About Security Update 2007-009 v1.1 at http://docs.info.apple.com/article.html?artnum=307224.
- Apple Web site, About Security Update 2008-002 at http://docs.info.apple.com/article.html?artnum=307562.
- BugTraq Mailing List, Mon Dec 17 2007 - 15:47:29 CST, Apple OS X Software Update Remote Command Execution at http://archives.neohapsis.com/archives/bugtraq/2007-12/0217.html.
- PCRE Web site, PCRE - Perl Compatible Regular Expressions at http://www.pcre.org/.
- BID-26346: PCRE Regular Expression Library Multiple Security Vulnerabilities
- CVE-2007-1661: Perl-Compatible Regular Expression (PCRE) library before 7.3 backtracks too far when matching certain input bytes against some regex patterns in non-UTF-8 mode, which allows context-dependent attackers to obtain sensitive information or cause a denial of service (crash), as demonstrated by the \X?\d and \P{L}?\d patterns.
- DSA-1399: pcre3 -- several vulnerabilities
- DSA-1570: kazehakase -- various
- FrSIRT/ADV-2007-3725: PCRE Regular Expression Handling Code Execution and Denial of Service
- FrSIRT/ADV-2007-3790: GLib Security Update Fixes PCRE Code Execution and Denial of Service
- FrSIRT/ADV-2007-4238: Apple Mac OS X Code Execution and Information Disclosure Vulnerabilities
- FrSIRT/ADV-2008-0924: Apple Mac OS X Command Execution and Security Bypass Issues
- GLSA-200711-30: PCRE: Multiple vulnerabilities
- GLSA-200801-02: R: Multiple vulnerabilities
- GLSA-200801-18: Kazehakase: Multiple vulnerabilities
- GLSA-200801-19: GOffice: Multiple vulnerabilities
- MDKSA-2007:211: Updated pcre packages fix vulnerability
- SA27543: PCRE Multiple Vulnerabilities
- SA28136: Apple Mac OS X Security Update Fixes Multiple Vulnerabilities
- SA28414: R PCRE Multiple Vulnerabilities
- SA29420: Mac OS X Security Update Fixes Multiple Vulnerabilities
- SUSE-SA:2007:062: pcre security problems
- USN-547-1: PCRE vulnerabilities
Reported:
Nov 05, 2007
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