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CVE-2008-3263

7.8 · HIGH

The IAX2 protocol implementation in Asterisk Open Source 1.0.x, 1.2.x before 1.2.30, and 1.4.x before 1.4.21.2; Business Edition A.x.x, B.x.x before B.2.5.4, and C.x.x before C.1.10.3; AsteriskNOW;…

Published Jul 22, 2008asteriskCWE-399EPSS 28.00%

Overview

CVE-2008-3263 is a high-severity vulnerability affecting asterisk asterisk. It was published on July 22, 2008 and has a CVSS 2.0 base score of 7.8 (HIGH).

This vulnerability has a CVSS 2.0 base score of 7.8, rated HIGH. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.

Technical description

The IAX2 protocol implementation in Asterisk Open Source 1.0.x, 1.2.x before 1.2.30, and 1.4.x before 1.4.21.2; Business Edition A.x.x, B.x.x before B.2.5.4, and C.x.x before C.1.10.3; AsteriskNOW; Appliance Developer Kit 0.x.x; and s800i 1.0.x before 1.2.0.1 allows remote attackers to cause a denial of service (call-number exhaustion and CPU consumption) by quickly sending a large number of IAX2 (IAX) POKE requests.

Remediation

Check the references section for vendor advisories and patches from asterisk. 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-2008-010.htmlRefdownloads.securityfocus.com/vulnerabilities/exploits/30321.plRefsecunia.com/advisories/31178Refsecunia.com/advisories/31194Refsecunia.com/advisories/34982Refsecurity.gentoo.org/glsa/glsa-200905-01.xmlRefwww.securityfocus.com/archive/1/494675/100/0/threadedRefwww.securityfocus.com/bid/30321Refwww.securitytracker.com/id?1020535Refwww.vupen.com/english/advisories/2008/2168/references

How CyberStrike helps

Frequently asked questions

What is CVE-2008-3263?

CVE-2008-3263 is a high-severity vulnerability affecting asterisk asterisk. It was published on July 22, 2008 and has a CVSS 2.0 base score of 7.8 (HIGH).

How severe is CVE-2008-3263?

This vulnerability has a CVSS 2.0 base score of 7.8, rated HIGH. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.

How do I fix or remediate CVE-2008-3263?

Check the references section for vendor advisories and patches from asterisk. 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-2008-3263?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2008-3263 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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