Description
Heap-based buffer overflow in 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 session ticket name to the session ticket extension, which is not properly handled when creating a ClientHello message to resume a session. NOTE: this identifier was SPLIT from CVE-2015-5291 per ADT3 due to different affected version ranges.
Fixed in Linux distributions
Distributions backport fixes, so the version that fixes this vulnerability differs per release — upgrade to at least the version shown. From the distributions' security trackers and advisories.
Debian
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Debian 8 | polarssl | 1.3.9-2.1+deb8u1 | DSA-3468-1 |
| Debian 7 | polarssl | 1.2.9-1~deb7u6 | DSA-3468-1 |
Advisories 1
- DSA-3468-1 polarssl - security update Debian Security (DSA / DLA) · Mar 9, 2026
References
- DSA-3468 vendor-advisory
- https://guidovranken.files.wordpress.com/2015/10/cve-2015-5291.pdf
- https://guidovranken.wordpress.com/2015/10/07/cve-2015-5291/
- FEDORA-2015-30a417bea9 vendor-advisory
- https://tls.mbed.org/tech-updates/security-advisories/mbedtls-security-advisory-2015-01
- openSUSE-SU-2016:1928 vendor-advisory