Asterisk: Multiple vulnerabilities

Background

Asterisk is an open source telephony engine and toolkit.

Description

Multiple vulnerabilities have been reported in Asterisk:

• Nick Baggott reported that Asterisk does not properly process overly long ASCII strings in various packets (CVE-2009-2726).
• Noam Rathaus and Blake Cornell reported a flaw in the IAX2 protocol implementation (CVE-2009-2346).
• amorsen reported an input processing error in the RTP protocol implementation (CVE-2009-4055).
• Patrik Karlsson reported an information disclosure flaw related to the REGISTER message (CVE-2009-3727).
• A vulnerability was found in the bundled Prototype JavaScript library, related to AJAX calls (CVE-2008-7220).

Impact

A remote attacker could exploit these vulnerabilities by sending a specially crafted package, possibly causing a Denial of Service condition, or resulting in information disclosure.

Workaround

There is no known workaround at this time.

Resolution

All Asterisk users should upgrade to the latest version:

 # emerge --sync
 # emerge --ask --oneshot --verbose ">=net-misc/asterisk-1.2.37"

NOTE: This is a legacy GLSA. Updates for all affected architectures are available since January 5, 2010. It is likely that your system is already no longer affected by this issue.