CVE-2020-35477

NameCVE-2020-35477
DescriptionMediaWiki 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).
SourceCVE (at NVD; CERT, LWN, oss-sec, fulldisc, bugtraq, EDB, Metasploit, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, Mageia, GitHub code/issues, web search, more)
ReferencesDLA-2504-1, DSA-4816-1
NVD severitymedium

Vulnerable and fixed packages

The table below lists information on source packages.

Source PackageReleaseVersionStatus
mediawiki (PTS)stretch1:1.27.7-1~deb9u3vulnerable
stretch (security)1:1.27.7-1~deb9u10fixed
buster, buster (security)1:1.31.16-1~deb10u1fixed
bullseye (security), bullseye1:1.35.4-1~deb11u1fixed
bookworm, sid1:1.35.4-1fixed

The information below is based on the following data on fixed versions.

PackageTypeReleaseFixed VersionUrgencyOriginDebian Bugs
mediawikisourcestretch1:1.27.7-1~deb9u7DLA-2504-1
mediawikisourcebuster1:1.31.12-1~deb10u1DSA-4816-1
mediawikisource(unstable)1:1.35.1-1

Notes

https://phabricator.wikimedia.org/T205908
https://lists.wikimedia.org/pipermail/wikitech-l/2020-December/094126.html

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