CVE-2013-5641: Buffer Overflow
The SIP channel driver (channels/chansip.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.
Affected Software
Remediation
Patch Available
Patch Available
Event History
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.