Vulnerability CVE-2011-1147
Published: 2011-03-15   Modified: 2012-02-13

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.

Type:

CWE-119

 (Improper Restriction of Operations within the Bounds of a Memory Buffer)

CVSS2 => (AV:N/AC:M/Au:N/C:P/I:P/A:P)

CVSS Base Score
Impact Subscore
Exploitability Subscore
6.8/10
6.4/10
8.6/10
Exploit range
Attack complexity
Authentication
Remote
Medium
No required
Confidentiality impact
Integrity impact
Availability impact
Partial
Partial
Partial
Affected software
Digium -> Asterisk 
Digium -> Asterisknow 
Digium -> S800i 

 References:
http://lists.fedoraproject.org/pipermail/package-announce/2011-March/055634.html
http://lists.fedoraproject.org/pipermail/package-announce/2011-March/055421.html
http://lists.fedoraproject.org/pipermail/package-announce/2011-March/055030.html
http://www.vupen.com/english/advisories/2011/0635
http://www.securitytracker.com/id?1025101
http://www.securityfocus.com/bid/46474
http://www.openwall.com/lists/oss-security/2011/03/11/8
http://www.openwall.com/lists/oss-security/2011/03/11/2
http://www.debian.org/security/2011/dsa-2225
http://secunia.com/advisories/43702
http://secunia.com/advisories/43429
http://downloads.asterisk.org/pub/security/AST-2011-002.html
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