| Name | CVE-2017-7418 |
| Description | ProFTPD before 1.3.5e and 1.3.6 before 1.3.6rc5 controls whether the home directory of a user could contain a symbolic link through the AllowChrootSymlinks configuration option, but checks only the last path component when enforcing AllowChrootSymlinks. Attackers with local access could bypass the AllowChrootSymlinks control by replacing a path component (other than the last one) with a symbolic link. The threat model includes an attacker who is not granted full filesystem access by a hosting provider, but can reconfigure the home directory of an FTP user. |
| Source | CVE (at NVD; CERT, LWN, oss-sec, fulldisc, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, GitHub advisories/code/issues, web search, more) |
| Debian Bugs | 859592 |
The table below lists information on source packages.
| Source Package | Release | Version | Status |
|---|---|---|---|
| proftpd-dfsg (PTS) | jessie, jessie (lts) | 1.3.5e+r1.3.5-2+deb8u8 | fixed |
| stretch (security) | 1.3.5e+r1.3.5b-4+deb9u2 | fixed | |
| stretch (lts), stretch | 1.3.5e+r1.3.5b-4+deb9u3 | fixed | |
| buster | 1.3.6-4+deb10u6 | fixed | |
| buster (security), buster (lts) | 1.3.6-4+deb10u4 | fixed | |
| bullseye | 1.3.7a+dfsg-12+deb11u2 | fixed | |
| bullseye (security) | 1.3.7a+dfsg-12+deb11u3 | fixed | |
| bookworm | 1.3.8+dfsg-4+deb12u3 | fixed | |
| bookworm (security) | 1.3.8+dfsg-4+deb12u4 | fixed | |
| sid, trixie | 1.3.8.c+dfsg-1 | fixed |
The information below is based on the following data on fixed versions.
| Package | Type | Release | Fixed Version | Urgency | Origin | Debian Bugs |
|---|---|---|---|---|---|---|
| proftpd-dfsg | source | jessie | 1.3.5-1.1+deb8u2 | |||
| proftpd-dfsg | source | (unstable) | 1.3.5b-4 | low | 859592 |
[wheezy] - proftpd-dfsg <no-dsa> (Minor issue)
http://bugs.proftpd.org/show_bug.cgi?id=4295
https://github.com/proftpd/proftpd/commit/ecff21e0d0e84f35c299ef91d7fda088e516d4ed
https://github.com/proftpd/proftpd/commit/f59593e6ff730b832dbe8754916cb5c821db579f