Vulnerability Description
MediaWiki before 1.35.1 blocks legitimate attempts to hide log entries in some situations. If one sets MediaWiki:Mainpage to Special:MyLanguage/Main Page, visits a log entry on Special:Log, and toggles the "Change visibility of selected log entries" checkbox (or a tags checkbox) next to it, there is a redirection to the main page's action=historysubmit (instead of the desired behavior in which a revision-deletion form appears).
CVSS Score
MEDIUM
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Mediawiki | Mediawiki | < 1.35.1 |
| Debian | Debian Linux | 9.0 |
| Fedoraproject | Fedora | 33 |
Related Weaknesses (CWE)
References
- https://lists.debian.org/debian-lts-announce/2020/12/msg00034.htmlMailing ListThird Party Advisory
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedorapro
- https://lists.wikimedia.org/pipermail/mediawiki-announce/2020-December/000268.htMailing ListRelease NotesVendor Advisory
- https://phabricator.wikimedia.org/T205908ExploitIssue TrackingThird Party Advisory
- https://www.debian.org/security/2020/dsa-4816Third Party Advisory
- https://lists.debian.org/debian-lts-announce/2020/12/msg00034.htmlMailing ListThird Party Advisory
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedorapro
- https://lists.wikimedia.org/pipermail/mediawiki-announce/2020-December/000268.htMailing ListRelease NotesVendor Advisory
- https://phabricator.wikimedia.org/T205908ExploitIssue TrackingThird Party Advisory
- https://www.debian.org/security/2020/dsa-4816Third Party Advisory
FAQ
What is CVE-2020-35477?
CVE-2020-35477 is a vulnerability with a CVSS score of 5.3 (MEDIUM). MediaWiki before 1.35.1 blocks legitimate attempts to hide log entries in some situations. If one sets MediaWiki:Mainpage to Special:MyLanguage/Main Page, visits a log entry on Special:Log, and toggle...
How severe is CVE-2020-35477?
CVE-2020-35477 has been rated MEDIUM with a CVSS base score of 5.3/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2020-35477?
Check the references section above for vendor advisories and patch information. Affected products include: Mediawiki Mediawiki, Debian Debian Linux, Fedoraproject Fedora.