An issue exists in channels/chan_sip.c in Sangoma Asterisk 13.x prior to 13.29.2, 16.x prior to 16.6.2, and 17.x prior to 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.
Vulnerable Product | Search on Vulmon | Subscribe to Product |
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digium certified asterisk 13.21.0 |
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digium asterisk |
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debian debian linux 8.0 |
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debian debian linux 9.0 |