medium
5
CWE
119 476
Advisory Published
Updated

CVE-2013-5641: Buffer Overflow

First published: Mon Sep 09 2013(Updated: )

The SIP channel driver (channels/chan_sip.c) in Asterisk Open Source 1.8.17.x through 1.8.22.x, 1.8.23.x before 1.8.23.1, and 11.x before 11.5.1 and Certified Asterisk 1.8.15 before 1.8.15-cert3 and 11.2 before 11.2-cert2 allows remote attackers to cause a denial of service (NULL pointer dereference, segmentation fault, and daemon crash) via an ACK with SDP to a previously terminated channel. NOTE: some of these details are obtained from third party information.

Credit: cve@mitre.org

Affected SoftwareAffected VersionHow to fix
Asterisk=1.8.17.0
Asterisk=1.8.17.0-rc1
Asterisk=1.8.17.0-rc2
Asterisk=1.8.17.0-rc3
Asterisk=1.8.18.0
Asterisk=1.8.18.0-rc1
Asterisk=1.8.18.1
Asterisk=1.8.19.0
Asterisk=1.8.19.0-rc1
Asterisk=1.8.19.0-rc3
Asterisk=1.8.19.1
Asterisk=1.8.20.0
Asterisk=1.8.20.0-rc1
Asterisk=1.8.20.0-rc2
Asterisk=1.8.21.0-rc1
Asterisk=1.8.21.0-rc2
Asterisk=1.8.22.0
Asterisk=1.8.22.0-rc1
Asterisk=1.8.22.0-rc2
Asterisk=1.8.23.0
Asterisk=1.8.23.0-rc1
Asterisk=1.8.23.0-rc2
Asterisk=11.0.0
Asterisk=11.0.0-beta1
Asterisk=11.0.0-beta2
Asterisk=11.0.0-rc1
Asterisk=11.0.0-rc2
Asterisk=11.0.1
Asterisk=11.0.2
Asterisk=11.1.0
Asterisk=11.1.0-rc1
Asterisk=11.1.0-rc3
Asterisk=11.1.1
Asterisk=11.1.2
Asterisk=11.2.0-rc1
Asterisk=11.2.0-rc2
Asterisk=11.3.0-rc1
Asterisk=11.3.0-rc2
Asterisk=11.4.0
Asterisk=11.4.0-rc1
Asterisk=11.4.0-rc2
Asterisk=11.4.0-rc3
Asterisk=11.5.0
Asterisk=11.5.0-rc1
Asterisk=11.5.0-rc2
Asterisk=11.5.1
Digium Asterisk Appliance Developer Kit=1.8.15
Digium Asterisk Appliance Developer Kit=1.8.15-cert1
Digium Asterisk Appliance Developer Kit=1.8.15-cert1-rc1
Digium Asterisk Appliance Developer Kit=1.8.15-cert1-rc2
Digium Asterisk Appliance Developer Kit=1.8.15-cert1-rc3
Digium Asterisk Appliance Developer Kit=1.8.15-cert2
Digium Asterisk Appliance Developer Kit=1.8.15-rc1
Digium Asterisk Appliance Developer Kit=11.2.0
Digium Asterisk Appliance Developer Kit=11.2.0-cert1
Digium Asterisk Appliance Developer Kit=11.2.0-rc1
Digium Asterisk Appliance Developer Kit=11.2.0-rc2

Remedy

http://downloads.asterisk.org/pub/security/AST-2013-004.html

Remedy

http://seclists.org/bugtraq/2013/Aug/185

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Reference Links

Frequently Asked Questions

  • What is the severity of CVE-2013-5641?

    CVE-2013-5641 has been classified as a high severity vulnerability due to its potential to cause denial of service.

  • How do I fix CVE-2013-5641?

    To fix CVE-2013-5641, you should upgrade to Asterisk versions 1.8.23.1, 11.5.1, or higher.

  • What kind of attacks can exploit CVE-2013-5641?

    CVE-2013-5641 can be exploited by remote attackers to trigger a NULL pointer dereference leading to a denial of service.

  • Which versions of Asterisk are affected by CVE-2013-5641?

    Asterisk versions 1.8.17.x through 1.8.22.x, and 11.x before 11.5.1 are affected by CVE-2013-5641.

  • Is there a workaround for CVE-2013-5641 if upgrading is not immediately possible?

    Currently, there are no specific workarounds for CVE-2013-5641, so it is highly recommended to apply the patch as soon as possible.

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