CVE-2017-18018: Race Condition
First published: Thu Jan 04 2018(Updated: )
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.
Credit: cve@mitre.org
| Affected Software | Affected Version | How to fix |
|---|---|---|
| GNU Coreutils | <=8.29 |
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Frequently Asked Questions
What is the severity of CVE-2017-18018?
CVE-2017-18018 has a moderate severity due to its potential to allow local users to escalate privileges.
How do I fix CVE-2017-18018?
To fix CVE-2017-18018, upgrade to GNU Coreutils version 8.30 or later.
What type of attack does CVE-2017-18018 enable?
CVE-2017-18018 enables local users to exploit a race condition to change the ownership of any file.
Which versions of GNU Coreutils are affected by CVE-2017-18018?
Versions of GNU Coreutils from 8.29 and earlier are affected by CVE-2017-18018.
Are there any workarounds for CVE-2017-18018?
Currently, there are no effective workarounds for CVE-2017-18018 aside from updating to a patched version.
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