CVE-2011-1147
asterisk - several
EPSS 3.4%
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.
How to fix CVE-2011-1147
To remediate CVE-2011-1147, upgrade the affected package to a fixed version below.
- —upgrade to 1:1.8.3.3-1 or later
- —upgrade to 1:1.4.21.2~dfsg-3+lenny2.1 or later
Is CVE-2011-1147 being exploited?
Low — EPSS is 3.4%, meaning exploitation activity has not been observed at scale.
Affected packages (2)
- from 0, < 1:1.8.3.3-1
- from 0, < 1:1.4.21.2~dfsg-3+lenny2.1