CVE-2011-2529 Memory corruption in n/a
Remote attackers can cause denial of service or potential code execution in Asterisk via crafted SIP packets containing null characters.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2011-2529?
CVE-2011-2529 is a medium-severity memory corruption vulnerability in Digium Asterisk, published on 6 Jul 2011. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
chan_sip.c in the SIP channel driver in Asterisk Open Source 1.6.x before 1.6.2.18.1 and 1.8.x before 1.8.4.3 does not properly handle '\0' characters in SIP packets, which allows remote attackers to cause a denial of service (memory corruption) or possibly have unspecified other impact via a crafted packet.
Weakness: CWE-119
Which versions are affected by CVE-2011-2529?
It affects 1 product.
Products include Digium Asterisk.
How do I fix CVE-2011-2529?
Upgrade to a fixed version.
Upgrade to the fixed version. Memory-safe languages, compiler hardening and fuzzing prevent most new cases. More about Memory corruption.
Is CVE-2011-2529 being exploited?
There is no known exploitation of CVE-2011-2529 in the wild and no public exploit code.
Other vulnerabilities in Digium Asterisk
Sources
Also known as DEBIAN-CVE-2011-2529, GHSA-xrm7-6c5j-p27r.