Quantum Secular Labs / Blog / Advisories

CVE-2013-1677: Mozilla Firefox: Memory corruption

CVE-2013-1677 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

The gfxSkipCharsIterator::SetOffsets function in Mozilla Firefox before 21.0, Firefox ESR 17.x before 17.0.6, Thunderbird before 17.0.6, and Thunderbird ESR 17.x before 17.0.6 allows remote attackers to execute arbitrary code or cause a denial of service (out-of-bounds read) 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: up to and including 20.0.1; 19.0; 19.0.1; 19.0.2; 20.0; 17.0; 17.0.1; 17.0.2; 17.0.3; 17.0.4; 17.0.5
  • Mozilla Thunderbird: up to and including 17.0.5; 17.0; 17.0.1; 17.0.2; 17.0.3; 17.0.4
  • Mozilla Thunderbird Esr: 17.0; 17.0.1; 17.0.2; 17.0.3; 17.0.4; 17.0.5

References