FreeBSD VuXML: Documenting security issues in FreeBSD and the FreeBSD Ports Collection

asterisk -- Remote Crash Vulnerability in chan_sip channel driver

Affected packages
	asterisk13	<	13.27.1
	asterisk15	<	15.7.3
	asterisk16	<	16.4.1

Details

VuXML ID	e9d2e981-a46d-11e9-bed9-001999f8d30b
Discovery	2019-06-28
Entry	2019-07-12

The Asterisk project reports:

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.

[source]

References

CVE Name	CVE-2019-13161
URL	https://downloads.asterisk.org/pub/security/AST-2019-003.html