CVE-2017-7418
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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.
Remediation
No guide yetNo remediation guidance has been written for this CVE yet. What the record does show:
Patch and advisory references
- http://bugs.proftpd.org/show_bug.cgi?id=4295
- 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
- https://github.com/proftpd/proftpd/commit/ecff21e0d0e84f35c299ef91d7fda088e516d4ed
References (8)
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