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CVE-2008-5558

4.3 · MEDIUM

Asterisk Open Source 1.2.26 through 1.2.30.3 and Business Edition B.2.3.5 through B.2.5.5, when realtime IAX2 users are enabled, allows remote attackers to cause a denial of service (crash) via aut…

Published Dec 17, 2008asteriskCWE-287EPSS 1.96%

Overview

CVE-2008-5558 is a medium-severity vulnerability affecting asterisk asterisk_business_edition. It was published on December 17, 2008 and has a CVSS 2.0 base score of 4.3 (MEDIUM).

This vulnerability has a CVSS 2.0 base score of 4.3, rated MEDIUM. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.

Technical description

Asterisk Open Source 1.2.26 through 1.2.30.3 and Business Edition B.2.3.5 through B.2.5.5, when realtime IAX2 users are enabled, allows remote attackers to cause a denial of service (crash) via authentication attempts involving (1) an unknown user or (2) a user using hostname matching.

Remediation

Check the references section for vendor advisories and patches from asterisk. Update asterisk_business_edition 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-2008-012.htmlRefosvdb.org/50675Refsecunia.com/advisories/32956Refsecunia.com/advisories/34982Refsecurity.gentoo.org/glsa/glsa-200905-01.xmlRefsecurityreason.com/securityalert/4769Refwww.securityfocus.com/archive/1/499117/100/0/threadedRefwww.securityfocus.com/bid/32773Refwww.securitytracker.com/id?1021378Refwww.vupen.com/english/advisories/2008/3403

How CyberStrike helps

Frequently asked questions

What is CVE-2008-5558?

CVE-2008-5558 is a medium-severity vulnerability affecting asterisk asterisk_business_edition. It was published on December 17, 2008 and has a CVSS 2.0 base score of 4.3 (MEDIUM).

How severe is CVE-2008-5558?

This vulnerability has a CVSS 2.0 base score of 4.3, 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-2008-5558?

Check the references section for vendor advisories and patches from asterisk. Update asterisk_business_edition 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-2008-5558?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2008-5558 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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