CVE-2015-5291: Buffer Overflow
First published: Mon Nov 02 2015(Updated: )
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.
Credit: secalert@redhat.com
| Affected Software | Affected Version | How to fix |
|---|---|---|
| mbed TLS | >=1.3.0<1.3.14 | |
| mbed TLS | >=2.0.0<2.1.2 | |
| PolarSSL | >=1.0.0<1.2.17 | |
| Debian | =7.0 | |
| Debian | =8.0 | |
| Fedora | =21 | |
| Fedora | =22 | |
| Fedora | =23 | |
| openSUSE | =42.1 | |
| openSUSE | =13.2 |
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Reference Links
- http://lists.fedoraproject.org/pipermail/package-announce/2015-November/170317.html
- http://lists.fedoraproject.org/pipermail/package-announce/2015-October/169625.html
- http://lists.fedoraproject.org/pipermail/package-announce/2015-October/169765.html
- http://lists.opensuse.org/opensuse-security-announce/2015-12/msg00013.html
- http://lists.opensuse.org/opensuse-updates/2015-12/msg00119.html
- http://www.debian.org/security/2016/dsa-3468
- https://guidovranken.files.wordpress.com/2015/10/cve-2015-5291.pdf
- https://guidovranken.wordpress.com/2015/10/07/cve-2015-5291/
- https://security.gentoo.org/glsa/201706-18
- https://tls.mbed.org/tech-updates/security-advisories/mbedtls-security-advisory-2015-01
Frequently Asked Questions
What is the severity of CVE-2015-5291?
CVE-2015-5291 has a severity that can lead to denial of service and potentially arbitrary code execution.
How do I fix CVE-2015-5291?
To fix CVE-2015-5291, upgrade PolarSSL to version 1.2.17 or later, or upgrade mbed TLS to versions 1.3.14, 2.1.2 or later.
What software is affected by CVE-2015-5291?
CVE-2015-5291 affects PolarSSL 1.x before 1.2.17 and mbed TLS versions 1.3.x before 1.3.14 and 2.x before 2.1.2.
Can CVE-2015-5291 be exploited remotely?
Yes, CVE-2015-5291 can be exploited remotely via a long hostname to the Server Name Indication (SNI) extension.
What type of vulnerability is CVE-2015-5291?
CVE-2015-5291 is classified as a heap-based buffer overflow vulnerability.
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