What’s Vulnerable › Vulnerabilities

CVE-2017-7418

• Severity: medium (CVSS 5.5 v3.0)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.4% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2017-04-04 · updated 2026-06-17
• Weakness: CWE-59

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 products

• ProFTPD: through 1.3.5; 1.3.6, 1.3.6-rc1, 1.3.6-rc2, 1.3.6-rc3, 1.3.6-rc4

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
• http://www.securityfocus.com/bid/97409
• https://github.com/proftpd/proftpd/commit/ecff21e0d0e84f35c299ef91d7fda088e516d4ed
• https://github.com/proftpd/proftpd/commit/f59593e6ff730b832dbe8754916cb5c821db579f
• https://github.com/proftpd/proftpd/pull/444/commits/349addc3be4fcdad9bd4ec01ad1ccd916c898ed8
• 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

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