CVE-2020-35477 Business logic in n/a
MediaWiki incorrectly redirects users when hiding log entries under specific configurations, preventing legitimate revision deletion actions.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2020-35477?
CVE-2020-35477 is a medium-severity vulnerability in Debian Debian Linux, published on 18 Dec 2020. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official 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).
Weakness: CWE-670
Which versions are affected by CVE-2020-35477?
1 open source package ship an affected version, including mediawiki. It affects 3 products.
| Package | Affected | Fixed in |
|---|---|---|
mediawiki Bitnami | All versions | 1.35.1 |
Products include Debian Debian Linux, Fedoraproject Fedora, Mediawiki Mediawiki.
How do I fix CVE-2020-35477?
Upgrade mediawiki to 1.35.1 or later.
Is CVE-2020-35477 being exploited?
There is no known exploitation of CVE-2020-35477 in the wild and no public exploit code.
Other vulnerabilities in Debian Debian Linux
Sources
Also known as BIT-mediawiki-2020-35477, DEBIAN-CVE-2020-35477, GHSA-wg6c-hmh5-phq6, UBUNTU-CVE-2020-35477.