Description
lockmail in maildrop before 1.5.3 does not drop privileges before executing commands, which allows local users to gain privileges via command line arguments.
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 ↗Advisories 2
- DSA-791-1 maildrop - missing privilege release Debian Security (DSA / DLA) · Mar 9, 2026
- DTSA-11-1 maildrop - local privilege escalation Debian Security (DSA / DLA) · Mar 9, 2026
References
- DSA-791 vendor-advisory