CVE-2011-4576

Severity: medium (CVSS 5.0 v2.0)
Exploited in the wild: not listed in CISA KEV
EPSS: 15.6% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2012-01-06 · updated 2026-06-16
Weakness: CWE-310

Description

The SSL 3.0 implementation in OpenSSL before 0.9.8s and 1.x before 1.0.0f does not properly initialize data structures for block cipher padding, which might allow remote attackers to obtain sensitive information by decrypting the padding data sent by an SSL peer.

Affected products

OpenSSL: through 0.9.8r; through 1.0.0e; 0.9.1c, 0.9.2b, 0.9.4, 0.9.5, 0.9.5a, 0.9.6 (+56)

References

http://aix.software.ibm.com/aix/efixes/security/openssl_advisory3.asc
http://h20000.www2.hp.com/bizsupport/TechSupport/Document.jsp?objectID=c03360041
http://lists.apple.com/archives/security-announce/2013/Jun/msg00000.html
http://lists.fedoraproject.org/pipermail/package-announce/2012-November/092905.html
http://lists.opensuse.org/opensuse-security-announce/2012-01/msg00017.html
http://lists.opensuse.org/opensuse-security-announce/2012-01/msg00018.html
http://marc.info/?l=bugtraq&m=132750648501816&w=2
http://marc.info/?l=bugtraq&m=133951357207000&w=2
http://marc.info/?l=bugtraq&m=134039053214295&w=2
http://rhn.redhat.com/errata/RHSA-2012-1306.html
http://rhn.redhat.com/errata/RHSA-2012-1307.html
http://rhn.redhat.com/errata/RHSA-2012-1308.html

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