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.

https://www.mediawiki.org/wiki/Release_notes/1.25#MediaWiki_1.25.3

Note that Tenable Network Security has extracted the preceding description block directly from the Fedora security advisory. Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues.

https://www.mediawiki.org/wiki/Release_notes/1.24#MediaWiki_1.24.4

Note that Tenable Network Security has extracted the preceding description block directly from the Fedora security advisory. Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues.

MediaWiki reports :

Wikipedia user RobinHood70 reported two issues in the chunked upload API. The API failed to correctly stop adding new chunks to the upload when the reported size was exceeded (T91203), allowing a malicious users to upload add an infinite number of chunks for a single file upload. Additionally, a malicious user could upload chunks of 1 byte for very large files, potentially creating a very large number of files on the server's filesystem (T91205).

Internal review discovered that it is not possible to throttle file uploads.

Internal review discovered a missing authorization check when removing suppression from a revision. This allowed users with the 'viewsuppressed' user right but not the appropriate 'suppressrevision' user right to unsuppress revisions.

Richard Stanway from teamliquid.net reported that thumbnails of PNG files generated with ImageMagick contained the local file path in the image metadata.

ID	Name	Product	Family	Severity
89450	Fedora 23 : mediawiki-1.25.3-1.fc23 (2015-ec6d598d3d)	Nessus	Fedora Local Security Checks	critical
89332	Fedora 21 : mediawiki-1.24.4-1.fc21 (2015-97fe05f788)	Nessus	Fedora Local Security Checks	critical
89179	Fedora 22 : mediawiki-1.25.3-1.fc22 (2015-24fe8b66c9)	Nessus	Fedora Local Security Checks	critical
86554	FreeBSD : mediawiki -- multiple vulnerabilities (b973a763-7936-11e5-a2a1-002590263bf5)	Nessus	FreeBSD Local Security Checks	critical

Detections

Analytics

CVE-2015-8009

critical

Tenable Plugins

critical

critical

critical

critical