CVE-2007-4455

Severity: medium (CVSS 5.0 v2.0)
Exploited in the wild: not listed in CISA KEV
EPSS: 1.8% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2007-08-22 · updated 2026-06-16

Description

The SIP channel driver (chan_sip) in Asterisk Open Source 1.4.x before 1.4.11, AsteriskNOW before beta7, Asterisk Appliance Developer Kit 0.x before 0.8.0, and s800i (Asterisk Appliance) 1.x before 1.0.3 allows remote attackers to cause a denial of service (memory exhaustion) via a SIP dialog that causes a large number of history entries to be created.

Affected products

Asterisk: through 1.4.9
Asterisk Appliance Developer Kit: through 0.7
Asterisknow: through beta_6

References

http://downloads.digium.com/pub/asa/AST-2007-020.html
http://seclists.org/fulldisclosure/2007/Aug/0393.html
http://secunia.com/advisories/26553
http://securityreason.com/securityalert/3047
http://www.securityfocus.com/bid/25392
http://www.securitytracker.com/id?1018595
http://www.vupen.com/english/advisories/2007/2953
https://exchange.xforce.ibmcloud.com/vulnerabilities/36145
http://downloads.digium.com/pub/asa/AST-2007-020.html
http://seclists.org/fulldisclosure/2007/Aug/0393.html
http://secunia.com/advisories/26553
http://securityreason.com/securityalert/3047

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