Race Condition Affecting coreutils package, versions <8.30-r0
Threat Intelligence
The probability is the direct output of the EPSS model, and conveys an overall sense of the threat of exploitation in the wild. The percentile measures the EPSS probability relative to all known EPSS scores. Note: This data is updated daily, relying on the latest available EPSS model version. Check out the EPSS documentation for more details.
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Test your applications- Snyk IDSNYK-ALPINE318-COREUTILS-5511802
- published4 Jan 2018
- disclosed4 Jan 2018
Introduced: 4 Jan 2018
CVE-2017-18018 (opens in a new tab)How to fix?
Upgrade Alpine:3.18 coreutils to version 8.30-r0 or higher.
NVD Description
Note: Versions mentioned in the description apply only to the upstream coreutils package and not the coreutils package as distributed by Alpine.
See How to fix? for Alpine:3.18 relevant fixed versions and status.
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.