Description
The FWDOWNL firmware-download implementation in Asterisk Open Source 1.0.x, 1.2.x before 1.2.30, and 1.4.x before 1.4.21.2; Business Edition A.x.x, B.x.x before B.2.5.4, and C.x.x before C.1.10.3; AsteriskNOW; Appliance Developer Kit 0.x.x; and s800i 1.0.x before 1.2.0.1 allows remote attackers to cause a denial of service (traffic amplification) via an IAX2 FWDOWNL 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 | 1:1.4.21.2~dfsg-1 | — |
References
- 1020536 vdb-entry
- GLSA-200905-01 vendor-advisory
- 31194 third-party-advisory
- ADV-2008-2168 vdb-entry
- http://downloads.digium.com/pub/security/AST-2008-011.html
- FEDORA-2008-6676 vendor-advisory
- 31178 third-party-advisory
- asterisk-downloadprotocol-dos(43955) vdb-entry
- 30350 vdb-entry
- 20080722 AST-2008-011: Traffic amplification in IAX2 firmware provisioning system mailing-list
- 34982 third-party-advisory