Description
The imap4d server for GNU Mailutils 0.5 and 0.6, and other versions before 0.6.90, allows authenticated remote users to cause a denial of service (CPU consumption) via a large range value in the FETCH command.
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 | mailutils | 1:0.6.1-3 | — |
| Debian 13 | mailutils | 1:0.6.1-3 | — |
| Debian 12 | mailutils | 1:0.6.1-3 | — |
| Debian 3.0 | mailutils | 20020409-1woody2 | DSA-732-1 |
Advisories 1
- DSA-732-1 mailutils - several Debian Security (DSA / DLA) · Mar 9, 2026
References
- 20050525 GNU Mailutils 0.6 imap4d FETCH Commad Resource Consumption DoS Vulnerability third-party-advisory
- 1014052 vdb-entry
- 15442 third-party-advisory
- 13765 vdb-entry
- DSA-732 vendor-advisory