CVE-2008-5558 Denial of service in n/a

Medium 4.3 Published 17 Dec 2008 Updated 7 Aug 2024

Remote attackers can crash Asterisk via authentication attempts when realtime IAX2 users are enabled, requiring a software upgrade.

Exploited in the wild: Not known
Login needed: Not needed
Attackable: Over the internet
Victim action needed: Not needed
Fix: Available

What is CVE-2008-5558?

CVE-2008-5558 is a medium-severity denial of service vulnerability in n/a, published on 17 Dec 2008. An attacker can exploit it over the internet without logging in, with no action from the victim.

Official 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.

Weakness: CWE-287

Which versions are affected by CVE-2008-5558?

It affects 2 products.

Products include Asterisk Asterisk Business Edition, Asterisk Open Source.

How do I fix CVE-2008-5558?

Upgrade to a fixed version.

Upgrade, then put limits on request size, rate and nesting depth so one client cannot exhaust the service. More about Denial of service.

Is CVE-2008-5558 being exploited?

There is no known exploitation of CVE-2008-5558 in the wild and no public exploit code.

Sources

Also known as DEBIAN-CVE-2008-5558, GHSA-rvg3-83c6-fx75.