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CVE-2011-0495

Published: Jan 20, 2011Updated: Apr 29, 2026 Sources: CVE List NVDCWE-787
NVD MITRE
6.0CVSSMEDIUM
EPSS Score
4.2%
Top 10.3%
CISA KEV
Not in KEV
Exploits
No Known Exploits
Remediation
Patch Available

Description

Stack-based buffer overflow in the ast_uri_encode function in main/utils.c in Asterisk Open Source before 1.4.38.1, 1.4.39.1, 1.6.1.21, 1.6.2.15.1, 1.6.2.16.1, 1.8.1.2, 1.8.2.; and Business Edition before C.3.6.2; when running in pedantic mode allows remote authenticated users to execute arbitrary code via crafted caller ID data in vectors involving the (1) SIP channel driver, (2) URIENCODE dialplan function, or (3) AGI dialplan function.

CVSS Vector Breakdown

AV:NAC:MAu:SC:PI:PA:P
Exploitability
AV:NAccess Vector
Network
AC:MAccess Complexity
Medium
Au:SAuthentication
Single
Impact
C:PConfidentiality
Partial
I:PIntegrity
Partial
A:PAvailability
Partial
Open in CVSS calculator →

Weaknesses

CWE-787

Affected Products

asteriskdigiumCommunications
asterisknowdigiumCommunications
fedorafedoraproject
On-premOS
Operating Systems / linux-distro
debian linuxdebian
On-premOS
Operating Systems / linux-distro
s800i firmwaredigiumCommunications
digiumcommercialUSCommunicationsaka digium, asterisk
fedoraprojectoss-projectUSOperating Systemsaka fedora project
debianoss-projectGBOperating Systemsaka debian gnu/linux
and 1 more affected products View all →

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://downloads.asterisk.org/pub/security/AST-2011-001-1.6.2.diff
downloads.asterisk.org
http://downloads.asterisk.org/pub/security/AST-2011-001.html
downloads.asterisk.org
http://lists.fedoraproject.org/pipermail/package-announce/2011-February/053689.html
lists.fedoraproject.org
and 12 more references View all →

Timeline

Published
Jan 20, 2011
Last Updated
Apr 29, 2026

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