CVE Tools

CVE-2011-4063

Published: Oct 21, 2011Updated: Apr 29, 2026 Sources: CVE List NVDCWE-20

No Known Exploits

Patch Available

Description

chan_sip.c in the SIP channel driver in Asterisk Open Source 1.8.x before 1.8.7.1 and 10.x before 10.0.0-rc1 does not properly initialize variables during request parsing, which allows remote authenticated users to cause a denial of service (daemon crash) via a malformed request.

CVSS Vector Breakdown

Exploitability

AV:NAccess Vector

Network

AC:LAccess Complexity

Low

Au:SAuthentication

Single

Impact

C:NConfidentiality

None

I:NIntegrity

None

A:CAvailability

Complete

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Weaknesses

Affected Products

open source asterisk

On-premWeb App

Communications / voip-telephony

asteriskoss-projectCommunicationsaka open source, asterisk appliance developer kit

Attack Graph

Products CVE Techniques Tactics

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Exploitability

Official Patch Available

MITRE ATT&CK

1 technique

Initial Access

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References

http://www.securitytracker.com/id?1026191

securitytracker.com

http://securityreason.com/securityalert/8478

securityreason.com

http://secunia.com/advisories/46420

and 4 more references View all →

Timeline

Published

Oct 21, 2011

Last Updated

Apr 29, 2026

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