Description
rtp.c in Asterisk Open Source 1.2.x before 1.2.37, 1.4.x before 1.4.27.1, 1.6.0.x before 1.6.0.19, and 1.6.1.x before 1.6.1.11; Business Edition B.x.x before B.2.5.13, C.2.x.x before C.2.4.6, and C.3.x.x before C.3.2.3; and s800i 1.3.x before 1.3.0.6 allows remote attackers to cause a denial of service (daemon crash) via an RTP comfort noise payload with a long data length.
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 | 1:1.6.2.0~rc7-1 | — |
| Debian 5.0 | asterisk | 1:1.4.21.2~dfsg-3+lenny1 | DSA-1952-1 |
Advisories 1
- DSA-1952-1 asterisk - several vulnerabilities Debian Security (DSA / DLA) · Mar 9, 2026
References
- 37153 vdb-entry
- 20091130 AST-2009-010: RTP Remote Crash Vulnerability mailing-list
- 37677 third-party-advisory
- 1023249 vdb-entry
- DSA-1952 vendor-advisory
- asterisk-rtp-comfortnoise-dos(54471) vdb-entry
- http://downloads.asterisk.org/pub/security/AST-2009-010-1.4.diff.txt
- http://downloads.asterisk.org/pub/security/AST-2009-010-1.6.0.diff.txt
- 37530 third-party-advisory
- FEDORA-2009-12461 vendor-advisory
- https://issues.asterisk.org/view.php?id=16242
- http://downloads.asterisk.org/pub/security/AST-2009-010-1.6.1.diff.txt
- 37708 third-party-advisory
- 60569 vdb-entry
- http://downloads.digium.com/pub/security/AST-2009-010.html
- ADV-2009-3368 vdb-entry
- http://downloads.asterisk.org/pub/security/AST-2009-010-1.2.diff.txt