Asterisk Project Security Advisory - AST-2019-003

Discussion in 'News Aggregator' started by Packet Storm, 12 Jul 2019.

  1. Packet Storm

    Packet Storm Guest

    Asterisk Project Security Advisory - When T.38 faxing is done in Asterisk a T.38 reinvite may be sent to an endpoint to switch it to T.38. If the endpoint responds with an improperly formatted SDP answer including both a T.38 UDPTL stream and an audio or video stream containing only codecs not allowed on the SIP peer or user a crash will occur. The code incorrectly assumes that there will be at least one common codec when T.38 is also in the SDP answer.

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