CVE Tools
Sign in

CVE-2011-1147

Published: Mar 15, 2011Updated: Apr 29, 2026 Sources: CVE List NVDCWE-119
6.8MEDIUM
NVD MITRE
EPSS Score
3.5%
Top 11.9%
CISA KEV
Not in KEV
Exploits
No Known Exploits
Remediation
Patch Available
Self-Check
OpenVAS

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.

No summary for this CVE yet.

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
Open in CVSS calculator →

Weaknesses

CWE-119

Affected Products

digium
commercial·USaka asterisk
asterisk
Communications
asterisknow
Communications
s800i
Communications
and 1 more affected products View all →

Exploitability

Official Patch Available
Is your org exposed to CVE-2011-1147?We can run the check for you — a free external exposure review, no install. Check my exposure

Attack Graph

Products CVE Techniques Tactics

Click technique nodes for MITRE ATT&CK details · drag to pan · Ctrl/⌘ + scroll to zoom, or go fullscreen.

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 →

Unlock Complete Vulnerability Intelligence

Get the full picture for CVE-2011-1147 and every CVE in our database. Create a free account — no credit card required.

Create Free Account
Plain-language analysis
Impact assessment and exploitation scenario in plain English
Attack graph visualization
Interactive attack path and kill chain mapping
Exploit details & PoC links
ExploitDB, Metasploit, GitHub PoCs with direct links
Nuclei scanner templates
Ready-to-use vulnerability scanner templates
Full remediation guide
Patch instructions, workarounds, and compliance impact
Interactive AI chat
Ask questions about this vulnerability in natural language
Related vulnerabilities
Semantically similar CVEs and attack patterns
REST API & MCP access
Integrate vulnerability data into your workflows