Description
Buffer overflow in smail 3.2.0.120 allows remote attackers or local users to execute arbitrary code via a long string in the MAIL FROM command and possibly other SMTP 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 | smail | 3.2.0.114-4woody1 | DSA-722-1 |
Public exploits
Exploit or proof-of-concept code for this vulnerability is publicly available, which lowers the bar for attackers. Treat it as a reason to patch sooner.
Third-party code, not reviewed by us. Public PoCs are sometimes fake or contain malware. Read the code first and run it only in an isolated lab, against systems you are authorised to test.
Exploit-DB 2
- Smail 3.2.0.120 - Remote Heap Overflow EDB-900 · remote · Mar 28, 2005 · verified
- Smail 3 - Multiple Remote/Local Vulnerabilities EDB-25275 · remote · Mar 25, 2005 · verified
Sources: PoC-in-GitHub, Metasploit Framework, Exploit-DB — updated daily. Only links are listed; no exploit code is hosted here.
Advisories 1
- DSA-722-1 smail - buffer overflow Debian Security (DSA / DLA) · Mar 9, 2026
References
- DSA-722 vendor-advisory
- 20050325 smail remote and local root holes mailing-list