PCRE character class Unicode sequence buffer overflow

pcre-class-unicode-bo (38278) The risk level is classified as HighHigh 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.

*CVSS:

Base Score: 6.8
  Access Vector: Network
  Access Complexity: Medium
  Authentication: None
  Confidentiality Impact: Partial
  Integrity Impact: Partial
  Availability Impact: Partial
 
Temporal Score: 5
  Exploitability: Unproven
  Remediation Level: Official-Fix
  Report Confidence: Confirmed

Consequences:

Gain Access

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.

References:

  • Apple Web site: About Security Update 2007-009 v1.1.
  • Apple Web site: About Security Update 2008-002.
  • Apple Web site: About Security Update 2007-009.
  • APSB07-20: Flash Player update available to address security vulnerabilities.
  • APSB08-13: Security Updates available for Adobe Reader and Acrobat 7 and 8.
  • BugTraq Mailing List, Mon Dec 17 2007 - 15:47:29 CST: Apple OS X Software Update Remote Command Execution.
  • NORTEL BULLETIN ID: 2008008954, Rev 1: Nortel Response to Sun Alert 238305 - Multiple Security Vulnerabilities in Flash Player for Solaris 10.
  • PCRE Web site: PCRE - Perl Compatible Regular Expressions.
  • Sun Alert ID: 238305: Multiple Security Vulnerabilities in Flash Player for Solaris.
  • Sun Alert ID: 239286: Multiple Security Vulnerabilities in the Adobe Reader may lead to Execution of Arbitrary Code .
  • 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
  • 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

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
  • MandrakeSoft Mandrake Linux 2007.1 X86_64
  • MandrakeSoft Mandrake 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
  • Turbolinux Turbolinux FUJI
  • Turbolinux Turbolinux wizpy

Reported:

Nov 05, 2007

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