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CVE-2017-18018

Date: January 3, 2018

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.

Language: C

Severity Score

Related Resources (6)

https://security-tracker.debian.org/tracker/CVE-2017-18018
https://access.redhat.com/security/cve/CVE-2017-18018
https://security.alpinelinux.org/vuln/CVE-2017-18018
https://nvd.nist.gov/vuln/detail/CVE-2017-18018
http://lists.gnu.org/archive/html/coreutils/2017-12/msg00045.html
https://www.mend.io/vulnerability-database/CVE-2017-18018

Severity Score

Weakness Type (CWE)

Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition')

CWE-362

CVSS v3.1

Base Score:
Attack Vector (AV): LOCAL
Attack Complexity (AC): LOW
Privileges Required (PR): LOW
User Interaction (UI): NONE
Scope (S): UNCHANGED
Confidentiality (C): HIGH
Integrity (I): HIGH
Availability (A): NONE

CVSS v2

Base Score:
Access Vector (AV): LOCAL
Access Complexity (AC): MEDIUM
Authentication (AU): NONE
Confidentiality (C): NONE
Integrity (I): PARTIAL
Availability (A): NONE
Additional information:

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