CVE-2020-35477 — Always-Incorrect Control Flow Implementation in Mediawiki

CWE-670 — Always-Incorrect Control Flow ImplementationCWE-601 — Open RedirectCWE-20 — Improper Input Validation5 documents5 sources
Severity
5.3MEDIUMNVD
EPSS
0.5%
top 35.22%
CISA KEV
Not in KEV
Exploit
No known exploits
Affected products
4
MediawikiDebian MediawikiDebian Linux+1 more
Timeline
PublishedDec 18
Latest updateMay 24

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 vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:NExploitability: 3.9 | Impact: 1.4

Affected Packages3 packages

▶debiandebian/mediawiki< mediawiki 1:1.35.1-1 (bookworm)
▶NVDmediawiki/mediawiki< 1.35.1
▶Debianmediawiki/mediawiki< 1:1.35.1-1+3

Also affects: Debian Linux 10.0, 9.0, Fedora 33

🔴Vulnerability Details

2
GHSA
GHSA-wg6c-hmh5-phq6: MediaWiki before 1↗2022-05-24
▶
OSV
CVE-2020-35477: MediaWiki before 1↗2020-12-18
▶

📋Vendor Advisories

2
Red Hat
mediawiki: unable to change visibility of log entries when MediaWiki:Mainpage uses Special:MyLanguage↗2020-12-18
▶
Debian
CVE-2020-35477: mediawiki - MediaWiki before 1.35.1 blocks legitimate attempts to hide log entries in some s...↗2020
▶
CVE-2020-35477 — Mediawiki vulnerability | cvebase