CVE-2008-5558

Severity: medium (CVSS 4.3 v2.0)
Exploited in the wild: not listed in CISA KEV
EPSS: 2.0% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2008-12-17 · updated 2026-06-16
Weakness: CWE-287

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.

Affected products

Asterisk Business Edition: b.2.3.4, b.2.3.5, b.2.5.0, b.2.5.1, b.2.5.3
asterisk Open Source: 1.2.26, 1.2.26-netsec, 1.2.26.1, 1.2.26.1-netsec, 1.2.26.2, 1.2.26.2-netsec (+6)

References

http://downloads.digium.com/pub/security/AST-2008-012.html
http://osvdb.org/50675
http://secunia.com/advisories/32956
http://secunia.com/advisories/34982
http://security.gentoo.org/glsa/glsa-200905-01.xml
http://securityreason.com/securityalert/4769
http://www.securityfocus.com/archive/1/499117/100/0/threaded
http://www.securityfocus.com/bid/32773
http://www.securitytracker.com/id?1021378
http://www.vupen.com/english/advisories/2008/3403
http://downloads.digium.com/pub/security/AST-2008-012.html
http://osvdb.org/50675

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