CVE-2013-5641 Null dereference in n/a
Remote attackers can crash the Asterisk PBX daemon by sending a specific SIP ACK packet to a terminated channel, causing a denial of service.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2013-5641?
CVE-2013-5641 is a medium-severity vulnerability in Digium Asterisk, published on 9 Sep 2013. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
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.
Weakness: CWE-119
Which versions are affected by CVE-2013-5641?
It affects 2 products.
Products include Digium Asterisk, Digium Certified Asterisk.
How do I fix CVE-2013-5641?
Upgrade to a fixed version.
Is CVE-2013-5641 being exploited?
There is no known exploitation of CVE-2013-5641 in the wild and no public exploit code.
Other vulnerabilities in Digium Asterisk
Sources
Also known as DEBIAN-CVE-2013-5641, GHSA-vx3m-32pc-pfvq.