Input validation error in MediaWiki - CVE-2021-31556

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Main Vulnerability Database Vulnerabilities #VU52580

Input validation error in MediaWiki - CVE-2021-31556

Published: April 26, 2021


Vulnerability identifier: #VU52580
CSH Severity: Medium
CVSSv4.0: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:H/VA:N/SC:N/SI:N/SA:N/E:U/U:Green
CVE-ID: CVE-2021-31556
CWE-ID: CWE-20
Exploitation vector: Remote access
Exploit availability: No public exploit available
Vulnerable software:
MediaWiki
Software vendor:
MediaWiki.org

Description

The vulnerability allows a remote attacker to compromise the target system.

The vulnerability exists due to the affected software does not validate the oarc_version (aka oauth_registered_consumer.oarc_version) parameter's length in the Oauth extension.


Remediation

Install updates from vendor's website.

External links