Go to homepageCyberStrike

Menu

Star on GitHub · 3.2k
Sign inDownload

CVE-2011-4063

6.8 · MEDIUM

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 authe…

Published Oct 21, 2011asteriskCWE-20EPSS 2.38%

Overview

CVE-2011-4063 is a medium-severity vulnerability affecting asterisk open_source. It was published on October 21, 2011 and has a CVSS 2.0 base score of 6.8 (MEDIUM).

This vulnerability has a CVSS 2.0 base score of 6.8, rated MEDIUM. It can be exploited remotely over the network. Some level of privileges is required for exploitation.

Technical 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.

Remediation

Check the references section for vendor advisories and patches from asterisk. Update open_source to the latest patched version. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

Affected products

VendorProductVersionsStatus

References

Refdownloads.digium.com/pub/security/AST-2011-012.htmlRefsecunia.com/advisories/46420Refsecurityreason.com/securityalert/8478Refwww.securityfocus.com/archive/1/520141/100/0/threadedRefwww.securityfocus.com/bid/50177Refwww.securitytracker.com/id?1026191Refexchange.xforce.ibmcloud.com/vulnerabilities/70706Refdownloads.digium.com/pub/security/AST-2011-012.htmlRefsecunia.com/advisories/46420Refsecurityreason.com/securityalert/8478

How CyberStrike helps

Frequently asked questions

What is CVE-2011-4063?

CVE-2011-4063 is a medium-severity vulnerability affecting asterisk open_source. It was published on October 21, 2011 and has a CVSS 2.0 base score of 6.8 (MEDIUM).

How severe is CVE-2011-4063?

This vulnerability has a CVSS 2.0 base score of 6.8, rated MEDIUM. It can be exploited remotely over the network. Some level of privileges is required for exploitation.

How do I fix or remediate CVE-2011-4063?

Check the references section for vendor advisories and patches from asterisk. Update open_source to the latest patched version. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

How can CyberStrike help with CVE-2011-4063?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2011-4063 is actually reachable in your own applications and APIs, then verifies each finding before reporting it. That tells you if the weakness is a real, exploitable risk in your environment or a false positive you can safely deprioritize.

Related MEDIUM CVEs from 2011

View all
Browse by year2026202520242023202220212020201920182017201620152014201320122011201020092008200720062005200420032002200120001999