What is the CVSS score of CVE-2015-5291?

CVE-2015-5291 has a CVSS 2.0 base score of 6.8 (Medium). CVSS vector: AV:N/AC:M/Au:N/C:P/I:P/A:P. EPSS exploitation probability: 2.0%.

PolarSSL CVE-2015-5291

MEDIUM

Buffer Overflow (CWE-119)

2015-11-02 secalert@redhat.com

Denial Of Service RCE Buffer Overflow

6.8

CVSS 2.0 · NVD

Severity by source

NVD PRIMARY

6.8 MEDIUM

AV:N/AC:M/Au:N/C:P/I:P/A:P

Primary rating from NVD · only source for this CVE.

CVSS VectorNVD

AV:N/AC:M/Au:N/C:P/I:P/A:P

Attack Vector

Network

Attack Complexity

Confidentiality

Integrity

Availability

Lifecycle Timeline

CVE Published

Nov 02, 2015 - 19:59 cve.org

MEDIUM 6.8

DescriptionCVE.org

Heap-based buffer overflow in PolarSSL 1.x before 1.2.17 and ARM mbed TLS (formerly PolarSSL) 1.3.x before 1.3.14 and 2.x before 2.1.2 allows remote SSL servers to cause a denial of service (client crash) and possibly execute arbitrary code via a long hostname to the server name indication (SNI) extension, which is not properly handled when creating a ClientHello message. NOTE: this identifier has been SPLIT per ADT3 due to different affected version ranges. See CVE-2015-8036 for the session ticket issue that was introduced in 1.3.0.

AnalysisAI

Technical ContextAI

This vulnerability is classified as Buffer Overflow (CWE-119), which allows attackers to corrupt memory to execute arbitrary code or crash the application. Heap-based buffer overflow in PolarSSL 1.x before 1.2.17 and ARM mbed TLS (formerly PolarSSL) 1.3.x before 1.3.14 and 2.x before 2.1.2 allows remote SSL servers to cause a denial of service (client crash) and possibly execute arbitrary code via a long hostname to the server name indication (SNI) extension, which is not properly handled when creating a ClientHello message. NOTE: this identifier has been SPLIT per ADT3 due to different affected version ranges. See CVE-2015-8036 for the session ticket issue that was introduced in 1.3.0. Affected products include: Arm Mbed Tls, Polarssl, Debian Debian Linux, Fedoraproject Fedora, Opensuse Leap. Version information: before 1.2.17.

RemediationAI

No vendor patch is available at time of analysis. Monitor vendor advisories for updates. Use memory-safe languages or bounds-checking. Enable ASLR, DEP/NX, stack canaries. Use safe string functions.