CVE-2011-4577

Severity: medium (CVSS 4.3 v2.0)
Exploited in the wild: not listed in CISA KEV
EPSS: 8.2% 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-399

Description

OpenSSL before 0.9.8s and 1.x before 1.0.0f, when RFC 3779 support is enabled, allows remote attackers to cause a denial of service (assertion failure) via an X.509 certificate containing certificate-extension data associated with (1) IP address blocks or (2) Autonomous System (AS) identifiers.

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://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=134039053214295&w=2
http://secunia.com/advisories/57353
http://support.apple.com/kb/HT5784
http://www-01.ibm.com/support/docview.wss?uid=ssg1S1004564
http://www.kb.cert.org/vuls/id/737740
http://www.openssl.org/news/secadv_20120104.txt

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