Servers and applications
CVE-2017-7418
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…
- Severity
- Medium 5.5
- Published
- 4 Apr 2017
- Last changed
- 17 Jun 2026
- Added to UpHeron
- 1 Nov 2026
- Exploit chance
- 0.4% in the next 30 daysHigher than 38% of CVEs. EPSS by FIRST, 11 Nov 2026
- Weakness
- Link following (CWE-59)
- Attack
- Needs local access · Needs a user account · No user action needed
- Attacker can
- Change data
- CVSS vector
CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N- Sources
- NVD
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.
Affected software
| Software | Affected versions |
|---|---|
ProFTPDServers and applications · cpe:a:proftpd:proftpd |
|