Description
wu-ftpd 2.6.2 and earlier, with the restricted-gid option enabled, allows local users to bypass access restrictions by changing the permissions to prevent access to their home directory, which causes wu-ftpd to use the root directory instead.
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
- wuftpd-restrictedgid-gain-access(15423) vdb-entry
- oval:org.mitre.oval:def:1637 vdb-entry signature
- 102356 vendor-advisory
- DSA-457 vendor-advisory
- oval:org.mitre.oval:def:1147 vdb-entry signature
- 11055 third-party-advisory
- 20168 third-party-advisory
- SSRT4704 vendor-advisory
- 9832 vdb-entry
- oval:org.mitre.oval:def:648 vdb-entry signature
- RHSA-2004:096 vendor-advisory
- oval:org.mitre.oval:def:1636 vdb-entry signature
- ADV-2006-1867 third-party-advisory