#VU49883 Link following in Sudo - CVE-2021-23239

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Main Vulnerability Database Vulnerabilities #VU49883

#VU49883 Link following in Sudo - CVE-2021-23239

Published: January 12, 2021 / Updated: January 20, 2021


Vulnerability identifier: #VU49883
Vulnerability risk: Low
CVSSv4.0: CVSS:4.0/AV:L/AC:L/AT:P/PR:L/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N/E:U/U:Clear
CVE-ID: CVE-2021-23239
CWE-ID: CWE-59
Exploitation vector: Local access
Exploit availability: No public exploit available
Vulnerable software:
Sudo
Software vendor:
Sudo

Description

The vulnerability allows a local authenticated user to gain access to sensitive information.

The sudoedit personality of Sudo before 1.9.5 may allow a local unprivileged user to perform arbitrary directory-existence tests by winning a sudo_edit.c race condition in replacing a user-controlled directory by a symlink to an arbitrary path.


Remediation

Install update from vendor's website.

External links