Public Date:
908029: CVE-2012-2686 openssl: DoS due to improper handling of CBC ciphersuites in TLS 1.1/1.2 on AES-NI supporting platforms

The MITRE CVE dictionary describes this issue as:

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.

Find out more about CVE-2012-2686 from the MITRE CVE dictionary dictionary and NIST NVD.


Not vulnerable. This issue did not affect the versions of OpenSSL as shipped with Red Hat Enterprise Linux 5 and 6 as they did not include support for TLS 1.2 or 1.1.

CVSS v2 metrics

NOTE: The following CVSS v2 metrics and score provided are preliminary and subject to review.

Base Score 5
Base Metrics AV:N/AC:L/Au:N/C:N/I:N/A:P
Access Vector Network
Access Complexity Low
Authentication None
Confidentiality Impact None
Integrity Impact None
Availability Impact Partial

Find out more about Red Hat support for the Common Vulnerability Scoring System (CVSS).

Affected Packages State

Platform Package State
Red Hat Enterprise Linux 6 openssl098e Not affected
Red Hat Enterprise Linux 6 openssl Not affected
Red Hat Enterprise Linux 5 openssl097a Not affected
Red Hat Enterprise Linux 5 openssl Not affected

External References