CVE-2012-5977 Denial of service in n/a
Remote attackers can cause denial of service via resource exhaustion in Asterisk when anonymous calls are enabled.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2012-5977?
CVE-2012-5977 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
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, when anonymous calls are enabled, allow remote attackers to cause a denial of service (resource consumption) by making anonymous calls from multiple sources and consequently adding many entries to the device state cache.
Weakness: CWE-119
Which versions are affected by CVE-2012-5977?
It affects 2 products.
Products include Digium Asterisk, Digium Certified Asterisk.
How do I fix CVE-2012-5977?
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-2012-5977 being exploited?
There is no known exploitation of CVE-2012-5977 in the wild and no public exploit code.
Other vulnerabilities in Digium Asterisk
Sources
Also known as DEBIAN-CVE-2012-5977, GHSA-43h5-hjxq-m9rj.