Description
Off-by-one error in certain versions of xfstt allows remote attackers to read potentially sensitive memory via a malformed client request in the connection handshake, which leaks the memory in the server's response.
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 11 | xfstt | 1.5.1-1 | — |
| Debian 3.0 | xfstt | 1.2.1-3 | DSA-360 |
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 1
- xfstt 1.2/1.4 - Memory Disclosure EDB-22952 · dos · Jul 23, 2003 · verified
Sources: PoC-in-GitHub, Metasploit Framework, Exploit-DB — updated daily. Only links are listed; no exploit code is hosted here.
Advisories 1
- DSA-360 xfstt - several vulnerabilities Debian Security (DSA / DLA) · Mar 9, 2026
References
- DSA-360 vendor-advisory
- 20030727 [PAPER]: Address relay fingerprinting. mailing-list
- http://developer.berlios.de/forum/forum.php?forum_id=2819
- 8255 vdb-entry