Vulnerability in OpenSSL
CVE-2011-4577
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.
Published · last modified .
CVSS v2 metric
CVSS v2 base score 4.3 (Medium). Vector: AV:N/AC:M/Au:N/C:N/I:N/A:P. This CVE predates CVSS v3 and has no v3 score from NVD.
EPSS exploit prediction
EPSS: 0.082 (94.7th percentile), scored .
Low probability of exploitation in the next 30 days, but still tracked. 95th percentile — 94.7% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.082 · newest: 0.082 · change: 0.000
Affected products
- OpenSSL — versions 0.9.1c, 0.9.2b, 0.9.4
Weakness classification (CWE)
Public proof-of-concept exploits
References
- h20000.www2.hp.com/bizsupport/TechSupport/Document.jsp (vendor-advisory)
- www-01.ibm.com/support/docview.wss
- lists.opensuse.org/opensuse-security-announce/2012-01/msg00017.html (vendor-advisory)
- lists.fedoraproject.org/pipermail/package-announce/2012-November/092905.html (vendor-advisory)
- www.openssl.org/news/secadv_20120104.txt
- lists.opensuse.org/opensuse-security-announce/2012-01/msg00018.html (vendor-advisory)
- support.apple.com/kb/HT5784
- lists.apple.com/archives/security-announce/2013/Jun/msg00000.html (vendor-advisory)
- www.kb.cert.org/vuls/id/737740 (US Government Resource, third-party-advisory)
- marc.info/ (vendor-advisory)
Frequently asked questions
- What is CVE-2011-4577?
- CVE-2011-4577 is a vulnerability in OpenSSL, classified under CWE-399. Published 2012-01-06.
- Is CVE-2011-4577 known to be exploited?
- 5 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.