CVE-2011-2216 Null dereference in n/a
Remote attackers can crash the Asterisk PBX daemon by sending a malformed SIP Contact header, 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-2011-2216?
CVE-2011-2216 is a medium-severity vulnerability in Digium Asterisk, published on 6 Jun 2011. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
reqresp_parser.c in the SIP channel driver in Asterisk Open Source 1.8.x before 1.8.4.2 does not initialize certain strings, which allows remote attackers to cause a denial of service (NULL pointer dereference and daemon crash) via a malformed Contact header.
Which versions are affected by CVE-2011-2216?
It affects 1 product.
Products include Digium Asterisk.
How do I fix CVE-2011-2216?
Upgrade to a fixed version.
Is CVE-2011-2216 being exploited?
There is no known exploitation of CVE-2011-2216 in the wild and no public exploit code.
Other vulnerabilities in Digium Asterisk
Sources
Also known as DEBIAN-CVE-2011-2216, GHSA-q7w4-fcc5-r63h.