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CVE-2010-0685

5.0 · MEDIUM

The design of the dialplan functionality in Asterisk Open Source 1.2.x, 1.4.x, and 1.6.x; and Asterisk Business Edition B.x.x and C.x.x, when using the ${EXTEN} channel variable and wildcard patter…

Published Feb 23, 2010digiumEPSS 1.37%

Overview

CVE-2010-0685 is a medium-severity vulnerability affecting digium asterisk. It was published on February 23, 2010 and has a CVSS 2.0 base score of 5.0 (MEDIUM).

This vulnerability has a CVSS 2.0 base score of 5.0, rated MEDIUM. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.

Technical description

The design of the dialplan functionality in Asterisk Open Source 1.2.x, 1.4.x, and 1.6.x; and Asterisk Business Edition B.x.x and C.x.x, when using the ${EXTEN} channel variable and wildcard pattern matches, allows context-dependent attackers to inject strings into the dialplan using metacharacters that are injected when the variable is expanded, as demonstrated using the Dial application to process a crafted SIP INVITE message that adds an unintended outgoing channel leg. NOTE: it could be argued that this is not a vulnerability in Asterisk, but a class of vulnerabilities that can occur in any program that uses this feature without the associated filtering functionality that is already available.

Remediation

Check the references section for vendor advisories and patches from digium. Update asterisk 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-2010-002.htmlReflists.fedoraproject.org/pipermail/package-announce/2010-March/037679.htmlRefsecunia.com/advisories/38641Refsecunia.com/advisories/39096Refsvn.asterisk.org/svn/asterisk/branches/1.2/README-SERIOUSLY.bestpractices.txtRefwww.securityfocus.com/archive/1/509608/100/0/threadedRefwww.securitytracker.com/id?1023637Refwww.vupen.com/english/advisories/2010/0439Refexchange.xforce.ibmcloud.com/vulnerabilities/56397Refdownloads.digium.com/pub/security/AST-2010-002.html

How CyberStrike helps

Frequently asked questions

What is CVE-2010-0685?

CVE-2010-0685 is a medium-severity vulnerability affecting digium asterisk. It was published on February 23, 2010 and has a CVSS 2.0 base score of 5.0 (MEDIUM).

How severe is CVE-2010-0685?

This vulnerability has a CVSS 2.0 base score of 5.0, rated MEDIUM. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.

How do I fix or remediate CVE-2010-0685?

Check the references section for vendor advisories and patches from digium. Update asterisk 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-2010-0685?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2010-0685 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.

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