CVE-2020-10737

oddjob: race condition in oddjob_selinux_mkdir function in mkhomedir.c can lead to symlink attack

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Severity

Moderate

Red Hat Product Security

6.3

CVSS 3.1

Review impact separately from score.

Published · May 7, 2020

Updated · November 22, 2025

Description

A race condition was found in the mkhomedir tool shipped with the oddjob package. During the home creation, mkhomedir copies the /etc/skel directory into the newly created home and changes its ownership to the home's user without properly checking the homedir path. This flaw allows an attacker to leverage this issue by creating a symlink point to a target folder, which then has its ownership transferred to the new home directory's unprivileged user.

CVSS score applicability

The CVSS score(s) listed for this vulnerability do not reflect the associated product's status, and are included for informational purposes to better understand the severity of this vulnerability.

Mitigation

No mitigation is specified in collected source.

CVSS / CWE

CVSS 3.1 · 6.3
CVSS:3.1/AV:L/AC:H/PR:H/UI:R/S:U/C:H/I:H/A:H

CWE-362 · Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition')