CVE-2012-3863 Denial of service in n/a
Remote authenticated users can cause a denial of service via RTP port exhaustion by sending SIP reINVITE requests without final responses.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2012-3863?
CVE-2012-3863 is a medium-severity denial of service vulnerability in Digium Asterisk, published on 9 Jul 2012. Any signed-in user can exploit it over the network, with no action from the victim.
Official description
channels/chan_sip.c in Asterisk Open Source 1.8.x before 1.8.13.1 and 10.x before 10.5.2, Asterisk Business Edition C.3.x before C.3.7.5, Certified Asterisk 1.8.11-certx before 1.8.11-cert4, and Asterisk Digiumphones 10.x.x-digiumphones before 10.5.2-digiumphones does not properly handle a provisional response to a SIP reINVITE request, which allows remote authenticated users to cause a denial of service (RTP port exhaustion) via sessions that lack final responses.
Weakness: CWE-399
Which versions are affected by CVE-2012-3863?
It affects 4 products.
Products include Digium Asterisk, Digium Asterisk Business Edition, Digium Asteriske, Digium Certified Asterisk.
How do I fix CVE-2012-3863?
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-2012-3863 being exploited?
There is no known exploitation of CVE-2012-3863 in the wild and no public exploit code.
Other vulnerabilities in Digium Asterisk
Sources
Also known as DEBIAN-CVE-2012-3863, GHSA-6fc4-87xv-rxjx.