Skip to content
Fencer Intel
medium 4.3

CVE-2011-4577 json

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 (assert…

published 2012-01-06 14 y ago modified 2026-06-16 4 mo ago also EUVD-2011-4503

cvss
4.3
version 2.0, NVD
cisa kev
Not listed
not in CISA's catalog
epss
8.2%
EPSS 8.2% chance of exploitation in 30 days, percentile 94%
public exploits
0
none known

Summary

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.

Patch / fix

  • openssl Debian 14, Debian 13, Debian 12 1.0.0f-1

debian advisories DEBIAN-CVE-2011-4577

  • openssl RHEL 6 1.0.0-20.el6_2.1
  • openssl-perl RHEL 6 1.0.0-20.el6_2.1
  • rhev-hypervisor6 RHEL 6 6.2-20120209.0.el6_2
  • rhev-hypervisor6-tools RHEL 6 6.2-20120209.0.el6_2

red hat advisories RHSA-2012:0059RHSA-2012:0109

  • libqt4 SLES 12 SP1, SLES 12, SLED 12 SP1 +7 more 4.8.6-7.1
  • libqt4-sql-plugins SLES 12 SP1, SLES 12, SLED 12 SP1 +7 more 4.8.6-7.1

suse advisories SUSE-SU-403SUSE-SU-403 Forbidden-1

  • openssl-1_1 openSUSE Tumbleweed 1.1.1l-1.2

opensuse advisories openSUSE-SU-2024:11127-1

Vendor advisories

What the vendors themselves say about their products: affected, fixed or not affected, and what to do.

red hat product security vex CVE-2011-4577 updated cvss 4.3

openssl: malformed RFC 3779 data can cause assertion failures

  • Red Hat Enterprise Linux Desktop (v. 6) openssl 1.0.0-20.el6_2.1 Red Hat Enterprise Linux Desktop Optional (v. 6) openssl 1.0.0-20.el6_2.1, openssl-perl 1.0.0-20.el6_2.1 Red Hat Enterprise Linux HPC Node (v. 6) openssl 1.0.0-20.el6_2.1 Red Hat Enterprise Linux HPC Node Optional (v. 6) openssl 1.0.0-20.el6_2.1, openssl-perl 1.0.0-20.el6_2.1 Red Hat Enterprise Linux Server (v. 6) openssl 1.0.0-20.el6_2.1 Red Hat Enterprise Linux Server Optional (v. 6) openssl 1.0.0-20.el6_2.1, openssl-perl 1.0.0-20.el6_2.1
    +2 more products
    Red Hat Enterprise Linux Workstation (v. 6) openssl 1.0.0-20.el6_2.1 Red Hat Enterprise Linux Workstation Optional (v. 6) openssl 1.0.0-20.el6_2.1, openssl-perl 1.0.0-20.el6_2.1
    fixed: vendor fix RHSA-2012:0059
  • Red Hat RHEV Hypervisor for RHEL-6 rhev-hypervisor6 6.2-20120209.0.el6_2, rhev-hypervisor6-tools 6.2-20120209.0.el6_2
    fixed: vendor fix RHSA-2012:0109
  • Red Hat Enterprise Linux 4 openssl, openssl096b Red Hat Enterprise Linux 5 openssl, openssl097a Red Hat Enterprise Linux 6 openssl098e
    not affected: vulnerable code not present

Red Hat CSAF VEX © Red Hat, Inc., from https://security.access.redhat.com/data/csaf/v2/vex/; changed: reduced to product statuses and remediations. CC BY 4.0 · csaf

Exploit prediction

8.19% chance of exploitation in the next 30 days, higher than 94% of all scored CVEs (FIRST EPSS, 2026-11-09).

CVSS scores

assigned by version score vector
NVD 2.0 4.3 AV:N/AC:M/Au:N/C:N/I:N/A:P

Classification

Weakness
  • CWE-399 Resource Management Errors
Technology feeds

References

Sources

Fencer Intel keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.