Description
Format string vulnerability in Asterisk Open Source 1.6.x before 1.6.0-beta6 might allow remote attackers to execute arbitrary code via logging messages that are not properly handled by (1) the ast_verbose logging API call, or (2) the astman_append function.
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 | 1:1.4.18.1~dfsg-1 | — |
| Debian 4.0 | asterisk | 1:1.2.13~dfsg-2etch3 | DSA-1525-1 |
Advisories 1
- DSA-1525-1 asterisk Debian Security (DSA / DLA) · Mar 9, 2026
References
- asterisk-astverbose-dos(41301) vdb-entry
- 20080318 AST-2008-004: Format String Vulnerability in Logger and Manager mailing-list
- 1019630 vdb-entry
- 28311 vdb-entry
- http://downloads.digium.com/pub/security/AST-2008-004.html
- DSA-1525 vendor-advisory
- 29426 third-party-advisory
- http://www.asterisk.org/node/48466
- ADV-2008-0928 vdb-entry
- 29456 third-party-advisory