CVE-2013-2686 Denial of service in n/a
Remote attackers can crash the Asterisk HTTP server via crafted POST requests due to improper Content-Length restriction, 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-2013-2686?
CVE-2013-2686 is a medium-severity denial of service vulnerability in n/a, published on 29 Mar 2013. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
main/http.c in the HTTP server in Asterisk Open Source 1.8.x before 1.8.20.2, 10.x before 10.12.2, and 11.x before 11.2.2; Certified Asterisk 1.8.15 before 1.8.15-cert2; and Asterisk Digiumphones 10.x-digiumphones before 10.12.2-digiumphones does not properly restrict Content-Length values, which allows remote attackers to conduct stack-consumption attacks and cause a denial of service (daemon crash) via a crafted HTTP POST request. NOTE: this vulnerability exists because of an incorrect fix for CVE-2012-5976.
Weakness: CWE-119
Which versions are affected by CVE-2013-2686?
It affects 3 products.
Products include Asterisk Certified Asterisk, Asterisk Digiumphones, Asterisk Open Source.
How do I fix CVE-2013-2686?
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-2013-2686 being exploited?
There is no known exploitation of CVE-2013-2686 in the wild and no public exploit code.
Other vulnerabilities in n/a
Sources
Also known as DEBIAN-CVE-2013-2686, GHSA-32mc-px3q-67r4.