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Vulnerability Details : CVE-2012-2686

crypto/evp/e_aes_cbc_hmac_sha1.c in the AES-NI functionality in the TLS 1.1 and 1.2 implementations in OpenSSL 1.0.1 before 1.0.1d allows remote attackers to cause a denial of service (application crash) via crafted CBC data.
Publish Date : 2013-02-08 Last Update Date : 2018-08-08
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- CVSS Scores & Vulnerability Types

CVSS Score
Confidentiality Impact None (There is no impact to the confidentiality of the system.)
Integrity Impact None (There is no impact to the integrity of the system)
Availability Impact Partial (There is reduced performance or interruptions in resource availability.)
Access Complexity Low (Specialized access conditions or extenuating circumstances do not exist. Very little knowledge or skill is required to exploit. )
Authentication Not required (Authentication is not required to exploit the vulnerability.)
Gained Access None
Vulnerability Type(s) Denial Of Service
CWE ID 310

- Related OVAL Definitions

Title Definition Id Class Family
HP-UX Apache Web Server, Remote Denial of Service (DoS) oval:org.mitre.oval:def:19660 unix
OpenSSL vulnerability in 1.0.1 before 1.0.1d, allows remote attackers to cause a denial of service (application crash) oval:org.mitre.oval:def:24870 windows
OpenSSL vulnerability 1.0.1 before 1.0.1d in VisualSVN Server (CVE-2012-2686) oval:org.mitre.oval:def:18868 windows
USN-1732-2 -- openssl regression oval:org.mitre.oval:def:17780 unix
OVAL (Open Vulnerability and Assessment Language) definitions define exactly what should be done to verify a vulnerability or a missing patch. Check out the OVAL definitions if you want to learn what you should do to verify a vulnerability.

- Products Affected By CVE-2012-2686

# Product Type Vendor Product Version Update Edition Language
1 Application Openssl Openssl 1.0.1b Version Details Vulnerabilities
2 Application Openssl Openssl 1.0.1c Version Details Vulnerabilities
3 Application Openssl Openssl 1.0.1 Version Details Vulnerabilities
4 Application Openssl Openssl 1.0.1a Version Details Vulnerabilities

- Number Of Affected Versions By Product

Vendor Product Vulnerable Versions
Openssl Openssl 4

- References For CVE-2012-2686 CONFIRM CONFIRM
BID 57755 OpenSSL CVE-2012-2686 Remote Denial of Service Vulnerability Release Date:2014-02-17 CONFIRM CONFIRM
HP HPSBUX02909;a=commit;h=125093b59f3c2a2d33785b5563d929d0472f1721 CONFIRM
APPLE APPLE-SA-2013-09-12-1

- Metasploit Modules Related To CVE-2012-2686

OpenSSL TLS 1.1 and 1.2 AES-NI DoS
The AES-NI implementation of OpenSSL 1.0.1c does not properly compute the length of an encrypted message when used with a TLS version 1.1 or above. This leads to an integer underflow which can cause a DoS. The vulnerable function aesni_cbc_hmac_sha1_cipher is only included in the 64-bit versions of OpenSSL. This module has been tested successfully on Ubuntu 12.04 (64-bit) with the default OpenSSL 1.0.1c package.
Module type : auxiliary Rank : normal

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