CVE-2011-4063 Denial of service in n/a
Remote authenticated users can crash the Asterisk SIP daemon via malformed requests due to improper variable initialization.
- 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-2011-4063?
CVE-2011-4063 is a medium-severity denial of service vulnerability in n/a, published on 21 Oct 2011. Any signed-in user can exploit it over the network, with no action from the victim.
Official description
chan_sip.c in the SIP channel driver in Asterisk Open Source 1.8.x before 1.8.7.1 and 10.x before 10.0.0-rc1 does not properly initialize variables during request parsing, which allows remote authenticated users to cause a denial of service (daemon crash) via a malformed request.
Weakness: CWE-20
Which versions are affected by CVE-2011-4063?
It affects 1 product.
Products include Asterisk Open Source.
How do I fix CVE-2011-4063?
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-2011-4063 being exploited?
There is no known exploitation of CVE-2011-4063 in the wild and no public exploit code.
Other vulnerabilities in n/a
Sources
Also known as DEBIAN-CVE-2011-4063, GHSA-wxfw-gh9x-v224.