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CVE-2020-35623

7.5 · HIGH

An issue was discovered in the CasAuth extension for MediaWiki through 1.35.1.

Published Dec 21, 2020CWE-20EPSS 1.10%

Overview

CVE-2020-35623 is a high-severity vulnerability. It was published on December 21, 2020 and has a CVSS 3.1 base score of 7.5 (HIGH).

This vulnerability has a CVSS 3.1 base score of 7.5, rated HIGH. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.

Technical description

An issue was discovered in the CasAuth extension for MediaWiki through 1.35.1. Due to improper username validation, it allowed user impersonation with trivial manipulations of certain characters within a given username. An ordinary user may be able to login as a "bureaucrat user" who has a similar username, as demonstrated by usernames that differ only in (1) bidirectional override symbols or (2) blank space.

Remediation

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

References

GitHubgithub.com/CWRUChielLab/CASAuth/pull/11Refphabricator.wikimedia.org/T263498GitHubgithub.com/CWRUChielLab/CASAuth/pull/11Refphabricator.wikimedia.org/T263498

How CyberStrike helps

Frequently asked questions

What is CVE-2020-35623?

CVE-2020-35623 is a high-severity vulnerability. It was published on December 21, 2020 and has a CVSS 3.1 base score of 7.5 (HIGH).

How severe is CVE-2020-35623?

This vulnerability has a CVSS 3.1 base score of 7.5, rated HIGH. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.

How do I fix or remediate CVE-2020-35623?

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

How can CyberStrike help with CVE-2020-35623?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2020-35623 is actually reachable in your own applications and APIs, then verifies each finding before reporting it. That tells you if the weakness is a real, exploitable risk in your environment or a false positive you can safely deprioritize.

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