Mozilla Firefox CSSValue array buffer overflow

firefox-cssvalue-bo (43167) The risk level is classified as HighHigh Risk

Description:

Mozilla Firefox is vulnerable to a buffer overflow, caused by improper bounds checking by the internal CSSValue array data structure when handling reference counters. By persuading a victim to visit a specially-crafted Web site and sending an overly large number of references to a CSS object, a remote attacker could overflow a buffer and execute arbitrary code on the system or cause the browser to crash.

*CVSS:

Base Score: 9.3
  Access Vector: Network
  Access Complexity: Medium
  Authentication: None
  Confidentiality Impact: Complete
  Integrity Impact: Complete
  Availability Impact: Complete
 
Temporal Score: 6.9
  Exploitability: Unproven
  Remediation Level: Official-Fix
  Report Confidence: Confirmed

Consequences:

Gain Access

Remedy:

Refer to MFSA 2008-34 for patch, upgrade or suggested workaround information. See References.

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

References:

  • MFSA 2008-34: Remote code execution by overflowing CSS reference counter.
  • Mozilla Web site: Firefox web browser | Faster, more secure, & customizable.
  • NORTEL BULLETIN ID: 2009009505, Rev 1: Nortel Response to Sun Alert 256408 - Solaris 10 - Vulnerabilities in Firefox May Allow Execution of Arbitrary Code.
  • Sun Alert ID: 256408: Multiple Security Vulnerabilities in Firefox Versions Before 2.0.0.19 May Allow Execution of Arbitrary Code or Access to Unauthorized Data.
  • ZDI-08-044: Mozilla Firefox CSSValue Array Memory Corruption Vulnerability.
  • Zero Day Initiative Blog, Wed 18 Jun 2008 14:58pm: Mozilla Firefox 3.0 Vulnerability.
  • ASA-2008-314: Thunderbird security update (RHSA-2008-0616)
  • ASA-2008-315: seamonkey security update (RHSA-2008-0599)
  • ASA-2008-316: firefox security update (RHSA-2008-0598)
  • ASA-2009-158: Multiple Security Vulnerabilities in Firefox Versions Before 2.0.0.19 May Allow Execution of Arbitrary Code or Access to unauthorized Data (Sun 256408)
  • BID-29802: Mozilla Firefox CSSValue Array Data Structure Remote Code Execution Vulnerability
  • CVE-2008-2785: Mozilla Firefox before 2.0.0.16 and 3.x before 3.0.1, Thunderbird before 2.0.0.16, and SeaMonkey before 1.1.11 use an incorrect integer data type as a CSS object reference counter in the CSSValue array (aka nsCSSValue:Array) data structure, which allows remote attackers to execute arbitrary code via a large number of references to a common CSS object, leading to a counter overflow and a free of in-use memory, aka ZDI-CAN-349.
  • DSA-1614: iceweasel -- several vulnerabilities
  • DSA-1615: xulrunner -- several vulnerabilities
  • DSA-1621: icedove -- several vulnerabilities
  • DSA-1697: iceape -- several vulnerabilities
  • MDVSA-2008:148: Updated Firefox packages fix vulnerabilities
  • MDVSA-2008:155: Updated Thunderbird packages fix multiple vulnerabilities
  • MDVSA-2008:155-1: Updated Thunderbird packages fix multiple vulnerabilities
  • RHSA-2008-0597: Critical: firefox security update
  • RHSA-2008-0598: Critical: firefox security update
  • RHSA-2008-0599: Critical: seamonkey security update
  • RHSA-2008-0616: Moderate: thunderbird security update
  • SA30761: Mozilla Firefox Unspecified Code Execution Vulnerability
  • SA34501: Sun Solaris Firefox Multiple Vulnerabilities
  • SECTRACK ID: 1020336: Mozilla Firefox CSS Reference Counter Bug Lets Remote Users Execute Arbitrary Code
  • USN-623-1: Firefox vulnerabilities
  • USN-626-1: Firefox and xulrunner vulnerabilities
  • USN-626-2: Devhelp, Epiphany, Midbrowser and Yelp update
  • USN-629-1: Thunderbird vulnerabilities

Platforms Affected:

  • Canonical Ubuntu 6.06 LTS
  • Canonical Ubuntu 7.04
  • Canonical Ubuntu 7.10
  • Canonical Ubuntu 8.04 LTS
  • Debian Debian Linux 4.0
  • MandrakeSoft Mandrake Linux 2008.0 X86_64
  • MandrakeSoft Mandrake Linux 2008.0
  • MandrakeSoft Mandrake Linux 2008.1
  • MandrakeSoft Mandrake Linux 2008.1 X86_64
  • MandrakeSoft Mandrake Linux Corporate Server 3.0 X86_64
  • MandrakeSoft Mandrake Linux Corporate Server 3.0
  • MandrakeSoft Mandrake Linux Corporate Server 4.0
  • MandrakeSoft Mandrake Linux Corporate Server 4.0 X86_64
  • Mozilla Firefox 2.0
  • Mozilla Firefox 2.0.0.1
  • Mozilla Firefox 2.0.0.10
  • Mozilla Firefox 2.0.0.11
  • Mozilla Firefox 2.0.0.12
  • Mozilla Firefox 2.0.0.13
  • Mozilla Firefox 2.0.0.14
  • Mozilla Firefox 2.0.0.2
  • Mozilla Firefox 2.0.0.3
  • Mozilla Firefox 2.0.0.4
  • Mozilla Firefox 2.0.0.5
  • Mozilla Firefox 2.0.0.6
  • Mozilla Firefox 2.0.0.7
  • Mozilla Firefox 2.0.0.8
  • Mozilla Firefox 2.0.0.9
  • Mozilla Firefox 3.0
  • RedHat Enterprise Linux 2.1 WS
  • RedHat Enterprise Linux 2.1 AS
  • RedHat Enterprise Linux 2.1 ES
  • RedHat Enterprise Linux 3 Desktop
  • RedHat Enterprise Linux 3 WS
  • RedHat Enterprise Linux 3 ES
  • RedHat Enterprise Linux 3 AS
  • RedHat Enterprise Linux 4 ES
  • RedHat Enterprise Linux 4 WS
  • RedHat Enterprise Linux 4 AS
  • RedHat Enterprise Linux 4 Desktop
  • RedHat Enterprise Linux 4.5.z ES
  • RedHat Enterprise Linux 4.5.z AS
  • RedHat Enterprise Linux 4.6.z AS
  • RedHat Enterprise Linux 4.6.z ES
  • RedHat Enterprise Linux 5
  • RedHat Enterprise Linux 5 Client
  • RedHat Enterprise Linux 5 Client Workstation
  • RedHat Enterprise Linux 5.2.z EUS
  • RedHat Enterprise Linux Optional Productivity Applications 5 Server
  • RedHat Enterprise Linux Optional Productivity Applications 5.2.z EUS
  • RedHat Linux Advanced Workstation 2.1 Itanium

Reported:

Jun 18, 2008

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