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CVE-2015-4485: Mozilla Firefox: Buffer overflow

CVE-2015-4485 has a CVSS v2 base score of 10.0 (the maximum on that scale) and affects Mozilla Firefox, along with 3 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 resize_context_buffers function in libvpx in Mozilla Firefox before 40.0 and Firefox ESR 38.x before 38.2 allows remote attackers to execute arbitrary code via malformed WebM video data.

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-119: Improper Restriction of Operations within the Bounds of a Memory Buffer

The product performs operations on a memory buffer, but it reads from or writes to a memory location outside the buffer's intended boundary.

Affected products

Mozilla Firefox: up to and including 39.0.3; 38.0; 38.0.1; 38.0.5; 38.1.0
Canonical Ubuntu Linux: 12.04; 14.04; 15.04
Opensuse: 13.1; 13.2
Oracle Solaris: 11.3