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CVE-2012-3957: Mozilla Firefox: Buffer overflow

CVE-2012-3957 has a CVSS v2 base score of 10.0 (the maximum on that scale) and affects Mozilla Firefox, along with 10 other products in NVD’s configuration data. 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

Heap-based buffer overflow in the nsBlockFrame::MarkLineDirty 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 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.

Underlying weakness

CWE-787: Out-of-bounds Write

The product writes data past the end, or before the beginning, of the intended buffer.

Affected products

Mozilla Firefox: before 15.0; from 10.0 before 10.0.7
Mozilla Seamonkey: before 2.12
Mozilla Thunderbird: before 15.0
Mozilla Thunderbird Esr: from 10.0 before 10.0.7
Opensuse: 12.2
Suse Linux Enterprise Desktop: 10 sp4; 11 sp2
Suse Linux Enterprise Server: 10 sp4; 11 sp2
Suse Linux Enterprise Software Development Kit: 11 sp2
Red Hat Enterprise Linux Desktop: 5.0; 6.0
Red Hat Enterprise Linux Eus: 6.3
Red Hat Enterprise Linux Server: 5.0; 6.0
Red Hat Enterprise Linux Server Eus: 6.3
Red Hat Enterprise Linux Workstation: 5.0; 6.0
Canonical Ubuntu Linux: 10.04; 11.04; 11.10; 12.04