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CVE-2019-18790

Status Candidate

Overview

An issue was discovered in channels/chan_sip.c in Sangoma Asterisk 13.x before 13.29.2, 16.x before 16.6.2, and 17.x before 17.0.1, and Certified Asterisk 13.21 before cert5. A SIP request can be sent to Asterisk that can change a SIP peer's IP address. A REGISTER does not need to occur, and calls can be hijacked as a result. The only thing that needs to be known is the peer's name; authentication details such as passwords do not need to be known. This vulnerability is only exploitable when the nat option is set to the default, or auto_force_rport.

Related Files

Asterisk Project Security Advisory - AST-2019-006
Posted Nov 21, 2019
Authored by Ben Ford | Site asterisk.org

Asterisk Project Security Advisory - A SIP request can be sent to Asterisk that can change a SIP peer's IP address. A REGISTER does not need to occur, and calls can be hijacked as a result.

tags | advisory
advisories | CVE-2019-18790
SHA-256 | f6ef15929258c9bf9a7eb09fc36ce5def67a2b9d5cf46bd3dd3f473a58858b6f
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