Vulnerability 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.
CVSS Score
MEDIUM
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Proftpd | Proftpd | <= 1.3.5 |
Related Weaknesses (CWE)
References
- http://bugs.proftpd.org/show_bug.cgi?id=4295Issue TrackingPatch
- http://lists.opensuse.org/opensuse-security-announce/2019-08/msg00004.html
- http://lists.opensuse.org/opensuse-security-announce/2019-08/msg00022.html
- http://lists.opensuse.org/opensuse-security-announce/2020-01/msg00009.html
- http://www.securityfocus.com/bid/97409Third Party AdvisoryVDB Entry
- https://github.com/proftpd/proftpd/commit/ecff21e0d0e84f35c299ef91d7fda088e516d4Issue TrackingPatchThird Party Advisory
- https://github.com/proftpd/proftpd/commit/f59593e6ff730b832dbe8754916cb5c821db57Issue TrackingPatchThird Party Advisory
- https://github.com/proftpd/proftpd/pull/444/commits/349addc3be4fcdad9bd4ec01ad1cIssue TrackingPatchThird Party Advisory
- http://bugs.proftpd.org/show_bug.cgi?id=4295Issue TrackingPatch
- http://lists.opensuse.org/opensuse-security-announce/2019-08/msg00004.html
- http://lists.opensuse.org/opensuse-security-announce/2019-08/msg00022.html
- http://lists.opensuse.org/opensuse-security-announce/2020-01/msg00009.html
- http://www.securityfocus.com/bid/97409Third Party AdvisoryVDB Entry
- https://github.com/proftpd/proftpd/commit/ecff21e0d0e84f35c299ef91d7fda088e516d4Issue TrackingPatchThird Party Advisory
- https://github.com/proftpd/proftpd/commit/f59593e6ff730b832dbe8754916cb5c821db57Issue TrackingPatchThird Party Advisory
FAQ
What is CVE-2017-7418?
CVE-2017-7418 is a vulnerability with a CVSS score of 5.5 (MEDIUM). 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 la...
How severe is CVE-2017-7418?
CVE-2017-7418 has been rated MEDIUM with a CVSS base score of 5.5/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2017-7418?
Check the references section above for vendor advisories and patch information. Affected products include: Proftpd Proftpd.