CVE-2015-8009 Auth bypass in n/a

Critical 9.8 Published 25 Jul 2017 Updated 6 Aug 2024

Remote registered consumers can impersonate other consumers by exploiting improper signature validation in the MediaWiki OAuth extension.

Exploited in the wild: Not known
Login needed: Not needed
Attackable: Over the internet
Victim action needed: Not needed
Fix: None listed

What is CVE-2015-8009?

CVE-2015-8009 is a critical authentication bypass vulnerability in Mediawiki Mediawiki, published on 25 Jul 2017. An attacker can exploit it over the internet without logging in, with no action from the victim.

Official description

The MWOAuthDataStore::lookup_token function in Extension:OAuth for MediaWiki 1.25.x before 1.25.3, 1.24.x before 1.24.4, and before 1.23.11 does not properly validate the signature when checking the authorization signature, which allows remote registered Consumers to use another Consumer's credentials by leveraging knowledge of the credentials.

Weakness: CWE-255

Which versions are affected by CVE-2015-8009?

It affects 1 product.

Products include Mediawiki Mediawiki.

How do I fix CVE-2015-8009?

No fix has been published for CVE-2015-8009 yet. Limit exposure of the affected software until one is available.

Upgrade, and rotate credentials and sessions that may have been exposed. More about Authentication bypass.

Is CVE-2015-8009 being exploited?

There is no known exploitation of CVE-2015-8009 in the wild and no public exploit code.

All Mediawiki Mediawiki vulnerabilities

Sources

Also known as GHSA-4p7h-6j8x-q68w.