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CVE-2017-7418

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…

Published Apr 4, 2017CWE-59EPSS 0.44%

Overview

CVE-2017-7418 is a medium-severity vulnerability. It was published on April 4, 2017 and has a CVSS 3.0 base score of 5.5 (MEDIUM).

This vulnerability has a CVSS 3.0 base score of 5.5, rated MEDIUM. It requires local or adjacent network access to exploit. Some level of privileges is required for exploitation.

Technical 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

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

References

Refbugs.proftpd.org/show_bug.cgi?id=4295Reflists.opensuse.org/opensuse-security-announce/2019-08/msg00004.htmlReflists.opensuse.org/opensuse-security-announce/2019-08/msg00022.htmlReflists.opensuse.org/opensuse-security-announce/2020-01/msg00009.htmlRefwww.securityfocus.com/bid/97409GitHubgithub.com/proftpd/proftpd/commit/ecff21e0d0e84f35c299ef91d7fda088e516d4edGitHubgithub.com/proftpd/proftpd/commit/f59593e6ff730b832dbe8754916cb5c821db579fGitHubgithub.com/proftpd/proftpd/pull/444/commits/349addc3be4fcdad9bd4ec01ad1ccd916c898ed8Refbugs.proftpd.org/show_bug.cgi?id=4295Reflists.opensuse.org/opensuse-security-announce/2019-08/msg00004.html

How CyberStrike helps

Frequently asked questions

What is CVE-2017-7418?

CVE-2017-7418 is a medium-severity vulnerability. It was published on April 4, 2017 and has a CVSS 3.0 base score of 5.5 (MEDIUM).

How severe is CVE-2017-7418?

This vulnerability has a CVSS 3.0 base score of 5.5, rated MEDIUM. It requires local or adjacent network access to exploit. Some level of privileges is required for exploitation.

How do I fix or remediate CVE-2017-7418?

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

How can CyberStrike help with CVE-2017-7418?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2017-7418 is actually reachable in your own applications and APIs, then verifies each finding before reporting it. That tells you if the weakness is a real, exploitable risk in your environment or a false positive you can safely deprioritize.

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