Description
Buffer overflow in the skey_challenge function in ftpd.c for wu-ftp daemon (wu-ftpd) 2.6.2 allows remote attackers to cause a denial of service and possibly execute arbitrary code via a s/key (SKEY) request with a long name.
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 | wu-ftpd | 2.6.2-3woody4 | DSA-457 |
Advisories 1
- DSA-457 wu-ftpd - several vulnerabilities Debian Security (DSA / DLA) · Mar 9, 2026
References
- 8893 vdb-entry
- DSA-457 vendor-advisory
- wuftpd-skey-bo(13518) vdb-entry
- http://www.securiteam.com/unixfocus/6X00Q1P8KC.html
- http://unixpunx.org/txt/exploits_archive/packetstorm/0310-advisories/wuftpd-skey.txt
- RHSA-2004:096 vendor-advisory