medium
4.3
CWE
399
Advisory Published
Updated

CVE-2011-4577

First published: Fri Jan 06 2012(Updated: )

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.

Credit: secalert@redhat.com

Affected SoftwareAffected VersionHow to fix
OpenSSL libcrypto<=0.9.8r
OpenSSL libcrypto=0.9.1c
OpenSSL libcrypto=0.9.2b
OpenSSL libcrypto=0.9.4
OpenSSL libcrypto=0.9.5
OpenSSL libcrypto=0.9.5a
OpenSSL libcrypto=0.9.6
OpenSSL libcrypto=0.9.6a
OpenSSL libcrypto=0.9.6b
OpenSSL libcrypto=0.9.6c
OpenSSL libcrypto=0.9.6d
OpenSSL libcrypto=0.9.6e
OpenSSL libcrypto=0.9.6f
OpenSSL libcrypto=0.9.6g
OpenSSL libcrypto=0.9.6h
OpenSSL libcrypto=0.9.6h-bogus
OpenSSL libcrypto=0.9.6i
OpenSSL libcrypto=0.9.6j
OpenSSL libcrypto=0.9.6k
OpenSSL libcrypto=0.9.6l
OpenSSL libcrypto=0.9.6m
OpenSSL libcrypto=0.9.7
OpenSSL libcrypto=0.9.7a
OpenSSL libcrypto=0.9.7b
OpenSSL libcrypto=0.9.7c
OpenSSL libcrypto=0.9.7d
OpenSSL libcrypto=0.9.7e
OpenSSL libcrypto=0.9.7f
OpenSSL libcrypto=0.9.7g
OpenSSL libcrypto=0.9.7h
OpenSSL libcrypto=0.9.7i
OpenSSL libcrypto=0.9.7j
OpenSSL libcrypto=0.9.7k
OpenSSL libcrypto=0.9.7l
OpenSSL libcrypto=0.9.7m
OpenSSL libcrypto=0.9.8
OpenSSL libcrypto=0.9.8a
OpenSSL libcrypto=0.9.8b
OpenSSL libcrypto=0.9.8c
OpenSSL libcrypto=0.9.8d
OpenSSL libcrypto=0.9.8e
OpenSSL libcrypto=0.9.8f
OpenSSL libcrypto=0.9.8g
OpenSSL libcrypto=0.9.8h
OpenSSL libcrypto=0.9.8i
OpenSSL libcrypto=0.9.8j
OpenSSL libcrypto=0.9.8k
OpenSSL libcrypto=0.9.8l
OpenSSL libcrypto=0.9.8m
OpenSSL libcrypto=0.9.8n
OpenSSL libcrypto=0.9.8o
OpenSSL libcrypto=0.9.8p
OpenSSL libcrypto=0.9.8q
OpenSSL libcrypto<=1.0.0e
OpenSSL libcrypto=1.0.0
OpenSSL libcrypto=1.0.0-beta1
OpenSSL libcrypto=1.0.0-beta2
OpenSSL libcrypto=1.0.0-beta3
OpenSSL libcrypto=1.0.0-beta4
OpenSSL libcrypto=1.0.0-beta5
OpenSSL libcrypto=1.0.0a
OpenSSL libcrypto=1.0.0b
OpenSSL libcrypto=1.0.0c
OpenSSL libcrypto=1.0.0d

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Reference Links

Frequently Asked Questions

  • What is the severity of CVE-2011-4577?

    CVE-2011-4577 has a severity rating that indicates it can lead to denial of service due to an assertion failure.

  • How do I fix CVE-2011-4577?

    To fix CVE-2011-4577, update OpenSSL to version 0.9.8s or 1.0.0f or later.

  • What types of attacks are possible with CVE-2011-4577?

    CVE-2011-4577 allows remote attackers to exploit vulnerable systems using specially crafted X.509 certificates.

  • Which OpenSSL versions are affected by CVE-2011-4577?

    CVE-2011-4577 affects OpenSSL versions prior to 0.9.8s and 1.0.0f.

  • Is CVE-2011-4577 related to IP address blocks or AS identifiers?

    Yes, CVE-2011-4577 specifically exploits certificate-extension data associated with IP address blocks and Autonomous System identifiers.

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