CVE-2012-5976 Denial of service in n/a
Remote attackers can crash the Asterisk PBX daemon via crafted TCP data in SIP, HTTP, or XMPP protocols, causing 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-2012-5976?
CVE-2012-5976 is a medium-severity denial of service vulnerability in Digium Asterisk, published on 4 Jan 2013. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
Multiple stack consumption vulnerabilities in Asterisk Open Source 1.8.x before 1.8.19.1, 10.x before 10.11.1, and 11.x before 11.1.2; Certified Asterisk 1.8.11 before 1.8.11-cert10; and Asterisk Digiumphones 10.x-digiumphones before 10.11.1-digiumphones allow remote attackers to cause a denial of service (daemon crash) via TCP data using the (1) SIP, (2) HTTP, or (3) XMPP protocol.
Weakness: CWE-119
Which versions are affected by CVE-2012-5976?
It affects 2 products.
Products include Digium Asterisk, Digium Certified Asterisk.
How do I fix CVE-2012-5976?
Upgrade to a fixed version.
Upgrade, then put limits on request size, rate and nesting depth so one client cannot exhaust the service. More about Denial of service.
Is CVE-2012-5976 being exploited?
There is no known exploitation of CVE-2012-5976 in the wild and no public exploit code.
Other vulnerabilities in Digium Asterisk
Sources
Also known as DEBIAN-CVE-2012-5976, GHSA-3g3q-h95m-9mp2.