Vulnerability Monitor

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CVE-2017-18018

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.

Published

2018-01-04T04:29:00.190

Last Modified

2025-06-09T16:15:27.250

Status

Modified

Source

[email protected]

Severity

CVSSv3.1: 7.1 (HIGH)

CVSSv2 Vector

AV:L/AC:M/Au:N/C:N/I:P/A:N

Access Vector: LOCAL
Access Complexity: MEDIUM
Authentication: NONE
Confidentiality Impact: NONE
Integrity Impact: PARTIAL
Availability Impact: NONE

Exploitability Score

3.4

Impact Score

2.9

Weaknesses

Type: Primary
CWE-362
Type: Secondary
CWE-362

Affected Vendors & Products

Type	Vendor	Product	Version/Range	Vulnerable?
Application	gnu	coreutils	≤ 8.29	Yes

References

http://lists.gnu.org/archive/html/coreutils/2017-12/msg00045.html Exploit, Issue Tracking, Third Party Advisory ([email protected])
http://lists.gnu.org/archive/html/coreutils/2017-12/msg00045.html Exploit, Issue Tracking, Third Party Advisory (af854a3a-2127-422b-91ae-364da2661108)