Description
chan_sip.c in the SIP channel driver in Asterisk Open Source 1.8.x before 1.8.7.1 and 10.x before 10.0.0-rc1 does not properly initialize variables during request parsing, which allows remote authenticated users to cause a denial of service (daemon crash) via a malformed request.
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 | 1:1.8.7.1~dfsg-1 | — |
References
- 1026191 vdb-entry
- 8478 third-party-advisory
- 46420 third-party-advisory
- 20111017 AST-2011-012: Remote crash vulnerability in SIP channel driver mailing-list
- 50177 vdb-entry
- asterisk-sip-channel-driver-dos(70706) vdb-entry
- http://downloads.digium.com/pub/security/AST-2011-012.html