Vulnerability Description
An issue was discovered in Asterisk Open Source through 13.27.0, 14.x and 15.x through 15.7.2, and 16.x through 16.4.0, and Certified Asterisk through 13.21-cert3. A pointer dereference in chan_sip while handling SDP negotiation allows an attacker to crash Asterisk when handling an SDP answer to an outgoing T.38 re-invite. To exploit this vulnerability an attacker must cause the chan_sip module to send a T.38 re-invite request to them. Upon receipt, the attacker must send an SDP answer containing both a T.38 UDPTL stream and another media stream containing only a codec (which is not permitted according to the chan_sip configuration).
CVSS Score
MEDIUM
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Digium | Certified Asterisk | 1.8.0.0 |
| Digium | Asterisk | >= 13.0.0, < 13.27.1 |
| Debian | Debian Linux | 8.0 |
Related Weaknesses (CWE)
References
- http://downloads.digium.com/pub/security/AST-2019-003.htmlVendor Advisory
- https://issues.asterisk.org/jira/browse/ASTERISK-28465Issue TrackingVendor 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
- http://downloads.digium.com/pub/security/AST-2019-003.htmlVendor Advisory
- https://issues.asterisk.org/jira/browse/ASTERISK-28465Issue TrackingVendor 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
FAQ
What is CVE-2019-13161?
CVE-2019-13161 is a vulnerability with a CVSS score of 5.3 (MEDIUM). An issue was discovered in Asterisk Open Source through 13.27.0, 14.x and 15.x through 15.7.2, and 16.x through 16.4.0, and Certified Asterisk through 13.21-cert3. A pointer dereference in chan_sip wh...
How severe is CVE-2019-13161?
CVE-2019-13161 has been rated MEDIUM with a CVSS base score of 5.3/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2019-13161?
Check the references section above for vendor advisories and patch information. Affected products include: Digium Certified Asterisk, Digium Asterisk, Debian Debian Linux.