Description
chan_sip.c in the SIP channel driver in Asterisk Open Source 1.8.x before 1.8.11.1 and 10.x before 10.3.1 and Asterisk Business Edition C.3.x before C.3.7.4, when the trustrpid option is enabled, allows remote authenticated users to cause a denial of service (daemon crash) by sending a SIP UPDATE message that triggers a connected-line update attempt without an associated channel.
Fixed in Linux distributions
Distributions backport fixes, so the version that fixes this vulnerability differs per release — upgrade to at least the version shown. From the distributions' security trackers and advisories.
Debian
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Debian 14 | asterisk | 1:1.8.11.1~dfsg-1 | — |
References
- https://issues.asterisk.org/jira/browse/ASTERISK-19770
- 1026963 vdb-entry
- 81456 vdb-entry
- 53205 vdb-entry
- asterisk-sipupdate-dos(75101) vdb-entry
- FEDORA-2012-6724 vendor-advisory
- 48891 third-party-advisory
- http://downloads.asterisk.org/pub/security/AST-2012-006.html