CVE-2011-1147 Memory corruption in n/a
Remote attackers can cause a crash or execute arbitrary code via crafted UDPTL packets in Asterisk when T.38 support is 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-2011-1147?
CVE-2011-1147 is a medium-severity memory corruption vulnerability in Digium Asterisk, published on 15 Mar 2011. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
Multiple stack-based and heap-based buffer overflows in the (1) decode_open_type and (2) udptl_rx_packet functions in main/udptl.c in Asterisk Open Source 1.4.x before 1.4.39.2, 1.6.1.x before 1.6.1.22, 1.6.2.x before 1.6.2.16.2, and 1.8 before 1.8.2.4; Business Edition C.x.x before C.3.6.3; AsteriskNOW 1.5; and s800i (Asterisk Appliance), when T.38 support is enabled, allow remote attackers to cause a denial of service (crash) and possibly execute arbitrary code via a crafted UDPTL packet.
Weakness: CWE-119
Which versions are affected by CVE-2011-1147?
It affects 3 products.
Products include Digium Asterisk, Digium Asterisknow, Digium S800i.
How do I fix CVE-2011-1147?
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-2011-1147 being exploited?
There is no known exploitation of CVE-2011-1147 in the wild and no public exploit code.
Other vulnerabilities in Digium Asterisk
Sources
Also known as DEBIAN-CVE-2011-1147, GHSA-747x-cf7f-hf5f.