Vulnerability Description
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.
CVSS Score
MEDIUM
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Digium | Asterisk | >= 13.0.0, < 13.29.2 |
| Digium | Certified Asterisk | 13.21.0 |
| Debian | Debian Linux | 8.0 |
Related Weaknesses (CWE)
References
- http://downloads.asterisk.org/pub/security/AST-2019-006.htmlPatchVendor Advisory
- https://lists.debian.org/debian-lts-announce/2019/11/msg00038.htmlMailing ListThird Party Advisory
- https://lists.debian.org/debian-lts-announce/2022/04/msg00001.htmlMailing ListThird Party Advisory
- https://www.asterisk.org/downloads/security-advisoriesVendor Advisory
- http://downloads.asterisk.org/pub/security/AST-2019-006.htmlPatchVendor Advisory
- https://lists.debian.org/debian-lts-announce/2019/11/msg00038.htmlMailing ListThird Party Advisory
- https://lists.debian.org/debian-lts-announce/2022/04/msg00001.htmlMailing ListThird Party Advisory
- https://www.asterisk.org/downloads/security-advisoriesVendor Advisory
FAQ
What is CVE-2019-18790?
CVE-2019-18790 is a vulnerability with a CVSS score of 6.5 (MEDIUM). 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...
How severe is CVE-2019-18790?
CVE-2019-18790 has been rated MEDIUM with a CVSS base score of 6.5/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2019-18790?
Check the references section above for vendor advisories and patch information. Affected products include: Digium Asterisk, Digium Certified Asterisk, Debian Debian Linux.