What’s Vulnerable › Vulnerabilities

CVE-2017-18018

• Severity: medium (CVSS 4.7 v3.0)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.3% probability of exploitation in the next 30 days
• Public exploit or detection template: yes
• Published: 2018-01-04 · updated 2026-06-17
• Weakness: CWE-362

Description

In GNU Coreutils through 8.29, chown-core.c in chown and chgrp does not prevent replacement of a plain file with a symlink during use of the POSIX "-R -L" options, which allows local users to modify the ownership of arbitrary files by leveraging a race condition.

Affected products

• GNU coreutils: through 8.29

References

• http://lists.gnu.org/archive/html/coreutils/2017-12/msg00045.html
• http://lists.gnu.org/archive/html/coreutils/2017-12/msg00045.html

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