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Chosen message with ID ae-201205-073

System: Linux, Unix, OSX
Topic: Vulnerability in Certified Asterisk
Links: AST-2012-007, AST-2012-008, CVE-2012-2948, CVE-2012-2947, ESB-2012.0503
ID: ae-201205-073

A remotely exploitable crash vulnerability exists in the IAX2 channel driver of Asterisk. To exploit this vulneability the followin paramters must be matched: 1. The setting mohinterpret=passthrough must be set on the end placing the call on hold. 2. A call must be established. 3. The call is placed on hold without a suggested music-on-hold class name. When these conditions are true, Asterisk will attempt to use an invalid pointer to a music-on-hold class name. Use of the invalid pointer will either cause a crash or the music-on-hold class name will be garbage. Updated packages are now available.

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