PCRE character class Unicode sequence buffer overflow

pcre-class-unicode-bo (38278)

High Risk

Description:

The PCRE (Perl Compatible Regular Expressions) library is vulnerable to a heap-based buffer overflow, caused by improper handling of a single Unicode sequence by multiple character classes. By passing specially-crafted data to an application linked to the vulnerable library, a remote attacker could exploit this vulnerability to overflow a buffer and cause the application to crash or possibly execute arbitrary code with the privileges of the application.

Platforms Affected:

• Adobe, Acrobat 7.0
• Adobe, Acrobat 7.0.1
• Adobe, Acrobat 7.0.2
• Adobe, Acrobat 7.0.3
• Adobe, Acrobat 7.0.4
• Adobe, Acrobat 7.0.5
• Adobe, Acrobat 7.0.6
• Adobe, Acrobat 7.0.7
• Adobe, Acrobat 7.0.8
• Adobe, Acrobat 7.0.9
• Adobe, Acrobat 8.0
• Adobe, Acrobat 8.0.0
• Adobe, Acrobat 8.1
• Adobe, Acrobat 8.1.1
• Adobe, Acrobat Reader 7.0
• Adobe, Acrobat Reader 7.0.1
• Adobe, Acrobat Reader 7.0.2
• Adobe, Acrobat Reader 7.0.3
• Adobe, Acrobat Reader 7.0.4
• Adobe, Acrobat Reader 7.0.5
• Adobe, Acrobat Reader 7.0.6
• Adobe, Acrobat Reader 7.0.7
• Adobe, Acrobat Reader 7.0.8
• Adobe, Acrobat Reader 7.0.8.0
• Adobe, Acrobat Reader 7.0.9
• Adobe, Acrobat Reader 8.0
• Adobe, Acrobat Reader 8.1
• Adobe, Acrobat Reader 8.1.1
• Adobe, Flash Player 9
• Adobe, Flash Player 9.0.124.0
• Adobe, Flash Player 9.0.16
• Adobe, Flash Player 9.0.18d60
• Adobe, Flash Player 9.0.20
• Adobe, Flash Player 9.0.20.0
• Adobe, Flash Player 9.0.28
• Adobe, Flash Player 9.0.28.0
• Adobe, Flash Player 9.0.31
• Adobe, Flash Player 9.0.31.0
• Adobe, Flash Player 9.0.45.0
• Adobe, Flash Player 9.0.47.0
• Adobe, Flash Player 9.0.48.0
• 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, OpenSUSE 10.2
• Novell, OpenSUSE 10.3
• Novell, SUSE Linux Enterprise Desktop 10 SP1
• Philip Hazel, PCRE 7.3 and prior
• RedHat, RHEL Desktop Supplementary 5 Client
• RedHat, RHEL Extras 3
• RedHat, RHEL Extras 4
• RedHat, RHEL Extras 4.5.z
• RedHat, RHEL Supplementary 5 Server
• Sun, OpenSolaris 2008.5 x86
• Sun, OpenSolaris 2008.5 SPARC
• Sun, Solaris 10 SPARC
• Sun, Solaris 10 x86
• SuSE, SuSE Linux 9.0

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:

Gain Access

References:

• 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.
• Apple Web site, About Security Update 2007-009 at http://docs.info.apple.com/article.html?artnum=307179.
• APSB07-20, Flash Player update available to address security vulnerabilities at http://www.adobe.com/support/security/bulletins/apsb07-20.html.
• APSB08-13, Security Updates available for Adobe Reader and Acrobat 7 and 8 at http://www.adobe.com/support/security/bulletins/apsb08-13.html.
• 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.
• NORTEL BULLETIN ID: 2008008954, Rev 1, Nortel Response to Sun Alert 238305 - Multiple Security Vulnerabilities in Flash Player for Solaris 10 at http://support.nortel.com/go/main.jsp?cscat=BLTNDETAIL&id=745016.
• PCRE Web site, PCRE - Perl Compatible Regular Expressions at http://www.pcre.org/.
• Sun Alert ID: 238305, Multiple Security Vulnerabilities in Flash Player for Solaris at http://sunsolve.sun.com/search/document.do?assetkey=1-66-238305-1.
• Sun Alert ID: 239286, Multiple Security Vulnerabilities in the Adobe Reader may lead to Execution of Arbitrary Code at http://sunsolve.sun.com/search/document.do?assetkey=1-66-239286-1.
• ASA-2008-013: flash-plugin security update (RHSA-2007-1126)
• ASA-2008-241: Multiple Security Vulnerabilities in Flash Player for Solaris (Sun 238305)
• ASA-2008-281: Multiple Security Vulnerabilities in the Adobe Reader may lead to Execution of Arbitrary Code (Sun 239286)
• BID-26346: PCRE Regular Expression Library Multiple Security Vulnerabilities
• CVE-2007-4768: Heap-based buffer overflow in Perl-Compatible Regular Expression (PCRE) library before 7.3 allows context-dependent attackers to execute arbitrary code via a singleton Unicode sequence in a character class in a regex pattern, which is incorrectly optimized.
• 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-2007-4258: Adobe Flash Player Code Execution and Security Bypass Vulnerabilities
• FrSIRT/ADV-2008-0924: Apple Mac OS X Command Execution and Security Bypass Issues
• FrSIRT/ADV-2008-1724: Sun Security Update Fixes Flash Player Code Execution Vulnerabilities
• GLSA-200711-30: PCRE: Multiple vulnerabilities
• GLSA-200801-02: R: Multiple vulnerabilities
• GLSA-200801-07: Adobe Flash Player: Multiple vulnerabilities
• GLSA-200801-18: Kazehakase: Multiple vulnerabilities
• GLSA-200801-19: GOffice: Multiple vulnerabilities
• MDKSA-2007:211: Updated pcre packages fix vulnerability
• RHSA-2007-1126: Critical: flash-plugin security update
• SA27543: PCRE Multiple Vulnerabilities
• SA28136: Apple Mac OS X Security Update Fixes Multiple Vulnerabilities
• SA28161: Adobe Flash Player Multiple Vulnerabilities
• SA28414: R PCRE Multiple Vulnerabilities
• SA29420: Mac OS X Security Update Fixes Multiple Vulnerabilities
• SA30155: Chicken PCRE Buffer Overflow Vulnerability
• SA30840: Sun Solaris Adobe Reader Multiple Vulnerabilities
• SECTRACK ID: 1019116: Adobe Flash Player Bugs Let Remote Users Execute Arbitrary Code, Scan Ports, and Conduct HTTP Request Splitting and Cross-Site Scripting Attacks
• SUSE-SA:2007:069: flash-player security update

Reported:

Nov 05, 2007

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