Description
bsmtpd 2.3 and earlier does not properly sanitize e-mail addresses, which allows remote attackers to execute arbitrary commands.
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 3.0 | bsmtpd | 2.3pl8b-12woody1 | DSA-690-1 |
Advisories 1
- DSA-690-1 bsmtpd - missing input sanitising Debian Security (DSA / DLA) · Mar 9, 2026
References
- DSA-690 vendor-advisory