Description
The ACL plugin in Dovecot before 1.0.3 allows remote authenticated users with the insert right to save certain flags via a (1) COPY or (2) APPEND 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 | dovecot | 1:1.0.3-2 | — |
| Debian 13 | dovecot | 1:1.0.3-2 | — |
| Debian 12 | dovecot | 1:1.0.3-2 | — |
Red Hat
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| RHEL 5 | dovecot | 1.0.7-2.el5 | RHSA-2008:0297 |
Advisories 1
- RHSA-2008:0297 Red Hat Security Advisory: dovecot security and bug fix update Red Hat Security Advisories (RHSA) · Jun 26, 2026
References
- oval:org.mitre.oval:def:11558 vdb-entry signature
- dovecot-aclplugin-security-bypass(35767) vdb-entry
- 30342 third-party-advisory
- RHSA-2008:0297 vendor-advisory
- 25182 vdb-entry
- https://issues.rpath.com/browse/RPL-1621
- 26320 third-party-advisory
- [dovecot-news] 20070801 v1.0.3 released mailing-list
- 26475 third-party-advisory