CVE-2013-5642 Null dereference in n/a
Remote attackers can crash the Asterisk PBX daemon by sending a malformed SIP request with invalid SDP, 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-2013-5642?
CVE-2013-5642 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.x before 1.8.23.1, 10.x before 10.12.3, and 11.x before 11.5.1; Certified Asterisk 1.8.15 before 1.8.15-cert3 and 11.2 before 11.2-cert2; and Asterisk Digiumphones 10.x-digiumphones before 10.12.3-digiumphones allows remote attackers to cause a denial of service (NULL pointer dereference, segmentation fault, and daemon crash) via an invalid SDP that defines a media description before the connection description in a SIP request.
Weakness: CWE-20
Which versions are affected by CVE-2013-5642?
It affects 3 products.
Products include Digium Asterisk, Digium Asterisk Digiumphones, Digium Certified Asterisk.
How do I fix CVE-2013-5642?
Upgrade to a fixed version.
Is CVE-2013-5642 being exploited?
There is no known exploitation of CVE-2013-5642 in the wild and no public exploit code.
Other vulnerabilities in Digium Asterisk
Sources
Also known as DEBIAN-CVE-2013-5642, GHSA-mj2h-m66w-4g7r.