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CVE-2011-1147

Published: Mar 15, 2011Updated: Apr 29, 2026 Sources: CVE List NVDCWE-119
NVD MITRE
6.8CVSSMEDIUM
EPSS Score
3.5%
Top 12.3%
CISA KEV
Not in KEV
Exploits
No Known Exploits
Remediation
Patch Available

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.

CVSS Vector Breakdown

AV:NAC:MAu:NC:PI:PA:P
Exploitability
AV:NAccess Vector
Network
AC:MAccess Complexity
Medium
Au:NAuthentication
None
Impact
C:PConfidentiality
Partial
I:PIntegrity
Partial
A:PAvailability
Partial
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Weaknesses

CWE-119

Affected Products

n/an/a
asteriskdigiumCommunications
asterisknowdigiumCommunications
s800idigiumCommunications
digiumcommercialUSCommunicationsaka digium, asterisk

Attack Graph

Products CVE Techniques Tactics

Click technique nodes to view MITRE ATT&CK details. Scroll to zoom, drag to pan.

Exploitability

Official Patch Available

MITRE ATT&CK

2 techniques
Initial Access
Privilege Escalation
View detailed technique mapping

References

http://secunia.com/advisories/43702
secunia.com
http://www.securityfocus.com/bid/46474
securityfocus.com
http://www.debian.org/security/2011/dsa-2225
debian.org
and 9 more references View all →

Timeline

Published
Mar 15, 2011
Last Updated
Apr 29, 2026

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