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Public Date:
820686: CVE-2012-2333 openssl: record length handling integer underflow

The MITRE CVE dictionary describes this issue as:

Integer underflow in OpenSSL before 0.9.8x, 1.0.0 before 1.0.0j, and 1.0.1 before 1.0.1c, when TLS 1.1, TLS 1.2, or DTLS is used with CBC encryption, allows remote attackers to cause a denial of service (buffer over-read) or possibly have unspecified other impact via a crafted TLS packet that is not properly handled during a certain explicit IV calculation.

Find out more about CVE-2012-2333 from the MITRE CVE dictionary dictionary and NIST NVD.


This issue did not affect the versions of openssl as shipped with Red Hat Enterprise Linux 3 and 4. The openssl versions in Red Hat Enterprise Linux 5 and 6 were partially affected, as they support DTLS, but they do not support TLS 1.1 and TLS 1.2. This issue was addressed in Red Hat Enterprise Linux 5 and 6 via RHSA-2012:0699.

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).

Red Hat Security Errata

Platform Errata Release Date
Red Hat JBoss Enterprise Application Platform 6.0 (openssl) RHSA-2012:1308 2012-09-24
Red Hat JBoss Enterprise Application Platform 5.1 (openssl) RHSA-2012:1307 2012-09-24
Red Hat Enterprise Linux 5 (openssl) RHSA-2012:0699 2012-05-29
Red Hat Enterprise Linux 6 (openssl) RHSA-2012:0699 2012-05-29
Red Hat JBoss Web Server 1.0 RHSA-2012:1306 2012-09-24

Affected Packages State

Platform Package State
Red Hat Enterprise Linux 6 openssl098e Will not fix
Red Hat Enterprise Linux 5 openssl097a Not affected
Red Hat JBoss EWS 1 openssl Affected
Red Hat Enterprise Linux 3 openssl Not affected
Red Hat Enterprise Linux 4 openssl Not affected


Red Hat would like to thank the OpenSSL project for reporting this issue. Upstream acknowledges Codenomicon as the original reporter.

External References

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