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CVE-2012-3964: Mozilla Firefox: Use after free

CVE-2012-3964 has a CVSS v2 base score of 10.0 (the maximum on that scale) and affects Mozilla Firefox. Per its scoring, it can be exploited over the network, without authentication. The scored impact on confidentiality, integrity and availability is the highest available.

Vulnerability description

Use-after-free vulnerability in the gfxTextRun::GetUserData function in Mozilla Firefox before 15.0, Firefox ESR 10.x before 10.0.7, Thunderbird before 15.0, Thunderbird ESR 10.x before 10.0.7, and SeaMonkey before 2.12 allows remote attackers to execute arbitrary code or cause a denial of service (heap memory corruption) via unspecified vectors.

Severity breakdown

CVSS v2.0 10.0: AV:N/AC:L/Au:N/C:C/I:C/A:C

  • Access vector: Network. Exploitable remotely over the network.
  • Access complexity: Low. No special conditions are required.
  • Authentication: None. No authentication is needed.
  • Confidentiality impact: Complete. Total information disclosure.
  • Integrity impact: Complete. Total loss of integrity.
  • Availability impact: Complete. Total shutdown of the component.

Affected products

  • Mozilla Firefox: 10.0; 10.0.1; 10.0.2; 10.0.3; 10.0.4; 10.0.5; 10.0.6; up to and including 14.0; 1.0; 1.0 preview_release; 1.0.1; 1.0.2
  • Mozilla Thunderbird Esr: 10.0; 10.0.1; 10.0.2; 10.0.3; 10.0.4; 10.0.5; 10.0.6
  • Mozilla Thunderbird: up to and including 14.0; 1.0; 1.0.1; 1.0.2; 1.0.3; 1.0.4; 1.0.5; 1.0.5 beta; 1.0.6; 1.0.7; 1.0.8; 1.5
  • Mozilla Seamonkey: up to and including 2.11; 2.0; 2.0 alpha_1; 2.0 alpha_2; 2.0 alpha_3; 2.0 beta_1; 2.0 beta_2; 2.0 rc1; 2.0 rc2; 2.0.1; 2.0.2; 2.0.3

References