CVE-2015-5291
6.8 · MEDIUMOverview
CVE-2015-5291 is a medium-severity vulnerability affecting polarssl polarssl. It was published on November 2, 2015 and has a CVSS 2.0 base score of 6.8 (MEDIUM).
This vulnerability has a CVSS 2.0 base score of 6.8, rated MEDIUM. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.
Technical Description
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.
Remediation
Check the references section for vendor advisories and patches from polarssl. Update polarssl to the latest patched version. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.
Affected Products
| Vendor | Product | Versions | Status |
|---|---|---|---|
| polarssl | polarssl | >= 1.0.0, < 1.2.17 | Affected |
| trustedfirmware | mbed_tls | >= 1.3.0, < 1.3.14 | Affected |
References
Frequently Asked Questions
What is CVE-2015-5291?
CVE-2015-5291 is a medium-severity vulnerability affecting polarssl polarssl. It was published on November 2, 2015 and has a CVSS 2.0 base score of 6.8 (MEDIUM).
How severe is CVE-2015-5291?
This vulnerability has a CVSS 2.0 base score of 6.8, rated MEDIUM. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.
How do I fix or remediate CVE-2015-5291?
Check the references section for vendor advisories and patches from polarssl. Update polarssl to the latest patched version. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.
How can CyberStrike help with CVE-2015-5291?
CyberStrike's AI-powered security agents can automatically detect CVE-2015-5291 across your infrastructure using autonomous pentesting, DAST scanning, and HackBrowser. The platform continuously monitors for known vulnerabilities and provides actionable remediation guidance prioritized by real-world exploitability.
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