CVE-2017-7418

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Summary

CVECVE-2017-7418
StatePUBLIC
Assigner[email protected]
Source PriorityCVE Program / NVD first with legacy fallback
Published2017-04-04 17:59:00 UTC
Updated2019-08-08 15:15:00 UTC
DescriptionProFTPD 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.

Risk And Classification

Problem Types: CWE-59

NVD Known Affected Configurations (CPE 2.3)

TypeVendorProductVersionUpdateEditionLanguage
Application Proftpd Proftpd 1.3.6 All All All
Application Proftpd Proftpd 1.3.6 rc1 All All
Application Proftpd Proftpd 1.3.6 rc2 All All
Application Proftpd Proftpd 1.3.6 rc3 All All
Application Proftpd Proftpd 1.3.6 rc4 All All
Application Proftpd Proftpd 1.3.6 All All All
Application Proftpd Proftpd 1.3.6 rc1 All All
Application Proftpd Proftpd 1.3.6 rc2 All All
Application Proftpd Proftpd 1.3.6 rc3 All All
Application Proftpd Proftpd 1.3.6 rc4 All All
Application Proftpd Proftpd All d All All

References

ReferenceSourceLinkTags
Merge pull request #444 from proftpd/auth-symlinks-anywhere-in-chroot · proftpd/proftpd@f59593e · GitHub CONFIRM github.com Issue Tracking, Patch, Third Party Advisory
Walk the entire DefaultRoot path, checking for symlinks of any compon… by Castaglia · Pull Request #444 · proftpd/proftpd · GitHub CONFIRM github.com Issue Tracking, Patch, Third Party Advisory
[security-announce] openSUSE-SU-2020:0031-1: moderate: Security update f SUSE lists.opensuse.org
[security-announce] openSUSE-SU-2019:1870-1: important: Security update SUSE lists.opensuse.org
ProFTPD CVE-2017-7418 Local Security Bypass Vulnerability BID www.securityfocus.com Third Party Advisory, VDB Entry
[security-announce] openSUSE-SU-2019:1836-1: important: Security update SUSE lists.opensuse.org
Bug 4295 – AllowChrootSymlinks off does not check entire DefaultRoot path for symlinks CONFIRM bugs.proftpd.org Issue Tracking, Patch
Backporting recursive handling of DefaultRoot path, when AllowChrootS… · proftpd/proftpd@ecff21e · GitHub CONFIRM github.com Issue Tracking, Patch, Third Party Advisory
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NVD vulnerability detail NVD nvd.nist.gov canonical, analysis
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