Note:
This project will be discontinued after December 13, 2021. [more]
2019-07-12
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).
Products | Debian_linux, Asterisk, Certified_asterisk |
Type | NULL Pointer Dereference (CWE-476) |
First patch | - None (likely due to unavailable code) |
Links |
• https://lists.debian.org/debian-lts-announce/2019/11/msg00038.html
• https://issues.asterisk.org/jira/browse/ASTERISK-28465 • https://lists.debian.org/debian-lts-announce/2022/04/msg00001.html • http://downloads.digium.com/pub/security/AST-2019-003.html |