medium
4.3
CWE
476
Advisory Published
CVE Published
CVE Published
Updated

CVE-2012-0885: Null Pointer Dereference

First published: Fri Jan 20 2012(Updated: )

A denial of service flaw was found in the way asterisk processed certain requests to negotiate secure video stream, when the res_srtp Asterisk module has been loaded and video support has not been enabled. A remote attacker could provide a specially-crafted media stream negotiation request, which once processed by Asterisk would lead to asterisk daemon crash by processing crypto line for such media stream. References: [1] <a href="http://downloads.asterisk.org/pub/security/AST-2012-001.html">http://downloads.asterisk.org/pub/security/AST-2012-001.html</a> [2] <a href="https://issues.asterisk.org/jira/browse/ASTERISK-19202">https://issues.asterisk.org/jira/browse/ASTERISK-19202</a> Upstream patch against the v1.8.x branch: [3] <a href="http://downloads.asterisk.org/pub/security/AST-2012-001-1.8.diff">http://downloads.asterisk.org/pub/security/AST-2012-001-1.8.diff</a> Upstream patch against the v1.10.x branch: [4] <a href="http://downloads.asterisk.org/pub/security/AST-2012-001-10.diff">http://downloads.asterisk.org/pub/security/AST-2012-001-10.diff</a>

Credit: cve@mitre.org

Affected SoftwareAffected VersionHow to fix
redhat/asterisk<1.8.8.2
1.8.8.2
redhat/asterisk<10.0.1
10.0.1
Asterisk=1.8.0
Asterisk=1.8.0-beta1
Asterisk=1.8.0-beta2
Asterisk=1.8.0-beta3
Asterisk=1.8.0-beta4
Asterisk=1.8.0-beta5
Asterisk=1.8.0-rc2
Asterisk=1.8.0-rc3
Asterisk=1.8.0-rc4
Asterisk=1.8.0-rc5
Asterisk=1.8.1
Asterisk=1.8.1-rc1
Asterisk=1.8.1.1
Asterisk=1.8.1.2
Asterisk=1.8.2
Asterisk=1.8.2-rc1
Asterisk=1.8.2.1
Asterisk=1.8.2.2
Asterisk=1.8.2.3
Asterisk=1.8.2.4
Asterisk=1.8.3
Asterisk=1.8.3-rc1
Asterisk=1.8.3-rc2
Asterisk=1.8.3-rc3
Asterisk=1.8.3.1
Asterisk=1.8.3.2
Asterisk=1.8.3.3
Asterisk=1.8.4
Asterisk=1.8.4-rc1
Asterisk=1.8.4-rc2
Asterisk=1.8.4-rc3
Asterisk=1.8.4.1
Asterisk=1.8.4.2
Asterisk=1.8.4.3
Asterisk=1.8.4.4
Asterisk=1.8.5-rc1
Asterisk=1.8.5.0
Asterisk=1.8.6.0
Asterisk=1.8.6.0-rc1
Asterisk=1.8.6.0-rc2
Asterisk=1.8.6.0-rc3
Asterisk=1.8.7.0
Asterisk=1.8.7.0-rc1
Asterisk=1.8.7.0-rc2
Asterisk=1.8.7.1
Asterisk=1.8.7.2
Asterisk=1.8.8.0
Asterisk=1.8.8.0-rc1
Asterisk=1.8.8.0-rc2
Asterisk=1.8.8.0-rc3
Asterisk=1.8.8.0-rc4
Asterisk=1.8.8.0-rc5
Asterisk=1.8.8.1
Asterisk=10.0.0
Asterisk=10.0.0-beta1
Asterisk=10.0.0-beta2
Asterisk=10.0.0-rc1
Asterisk=10.0.0-rc2
Asterisk=10.0.0-rc3

Remedy

http://downloads.asterisk.org/pub/security/AST-2012-001-1.8.diff

Remedy

http://downloads.asterisk.org/pub/security/AST-2012-001-10.diff

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Reference Links

Frequently Asked Questions

  • What is the severity of CVE-2012-0885?

    CVE-2012-0885 is classified as a denial of service vulnerability.

  • How do I fix CVE-2012-0885?

    To fix CVE-2012-0885, upgrade Asterisk to version 1.8.8.2 or 10.0.1 or later.

  • Which Asterisk versions are affected by CVE-2012-0885?

    Asterisk versions prior to 1.8.8.2 and 10.0.1 are affected by CVE-2012-0885.

  • What kind of attack is possible with CVE-2012-0885?

    An attacker could exploit CVE-2012-0885 by sending a specially-crafted media stream negotiation request to cause a denial of service.

  • Does CVE-2012-0885 impact users with video support enabled in Asterisk?

    No, CVE-2012-0885 specifically affects Asterisk when the video support is not enabled.

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