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CVE-2015-2740: Mozilla Thunderbird: Buffer overflow

CVE-2015-2740 has a CVSS v2 base score of 10.0 (the maximum on that scale) and affects Mozilla Thunderbird, along with 6 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

Buffer overflow in the nsXMLHttpRequest::AppendToResponseText function in Mozilla Firefox before 39.0, Firefox ESR 31.x before 31.8 and 38.x before 38.1, and Thunderbird before 38.1 might allow remote attackers to cause a denial of service or have unspecified other impact via unknown 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-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 Thunderbird: up to and including 38.0.1
Mozilla Firefox: 31.0; 31.1.0; 31.1.1; 31.3.0; 31.5.1; 31.5.2; 31.5.3; 38.0; up to and including 38.1.0
Mozilla Firefox Esr: 31.1; 31.2; 31.3; 31.4; 31.5; 31.6.0; 31.7.0
Novell Suse Linux Enterprise Software Development Kit: 12.0
Canonical Ubuntu Linux: 12.04; 14.04; 14.10; 15.04
Debian Linux: 7.0; 8.0
Novell Suse Linux Enterprise Desktop: 12.0
Novell Suse Linux Enterprise Server: 11 sp4; 12.0
Oracle Solaris: 11.3