Bug 1941477 (CVE-2019-18351) - CVE-2019-18351 asterisk: malicious SIP request may lead to hijacked calls
Summary: CVE-2019-18351 asterisk: malicious SIP request may lead to hijacked calls
Keywords:
Status: CLOSED NOTABUG
Alias: CVE-2019-18351
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
medium
medium
Target Milestone: ---
Assignee: Red Hat Product Security
QA Contact:
URL:
Whiteboard:
Depends On:
Blocks:
TreeView+ depends on / blocked
 
Reported: 2021-03-22 09:02 UTC by Marian Rehak
Modified: 2021-10-28 05:29 UTC (History)
3 users (show)

Fixed In Version:
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Last Closed: 2021-10-28 05:29:23 UTC
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Description Marian Rehak 2021-03-22 09:02:26 UTC 
An issue was discovered in channels/chan_sip.c in Sangoma Asterisk through 13.29.1, through 16.6.1, and through 17.0.0; and Certified Asterisk through 13.21-cert4. 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.

http://downloads.asterisk.org/pub/security/AST-2019-006.html
https://www.asterisk.org/downloads/security-advisories
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