Vulnerability CVE-2020-35480: Information
Description
An issue was discovered in MediaWiki before 1.35.1. Missing users (accounts that don't exist) and hidden users (accounts that have been explicitly hidden due to being abusive, or similar) that the viewer cannot see are handled differently, exposing sensitive information about the hidden status to unprivileged viewers. This exists on various code paths.
Severity: MEDIUM (5.3) Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N
Fixed packages
Package name | Branch | Fixed in version | Version from repository | Errata ID | Task # | State |
|---|---|---|---|---|---|---|
| mediawiki | sisyphus | 1.35.1-alt1 | 1.40.1-alt2 | ALT-PU-2020-3554-1 | 263831 | Fixed |
| mediawiki | p10 | 1.35.1-alt1 | 1.40.1-alt2 | ALT-PU-2020-3554-1 | 263831 | Fixed |
| mediawiki | p9 | 1.35.1-alt1 | 1.36.1-alt1 | ALT-PU-2020-3568-1 | 263837 | Fixed |
| mediawiki | c10f1 | 1.35.1-alt1 | 1.37.2-alt1 | ALT-PU-2020-3554-1 | 263831 | Fixed |
References to Advisories, Solutions, and Tools
Hyperlink | Resource |
|---|---|
| https://lists.wikimedia.org/pipermail/mediawiki-announce/2020-December/000268.html |
|
| https://phabricator.wikimedia.org/T120883 |
|
| DSA-4816 |
|
| [debian-lts-announce] 20201223 [SECURITY] [DLA 2504-1] mediawiki security update |
|
| FEDORA-2020-0be2d40e13 |