| Name | CVE-2020-35480 |
| 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. |
| Source | CVE (at NVD; CERT, LWN, oss-sec, fulldisc, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, GitHub advisories/code/issues, web search, more) |
| References | DLA-2504-1, DSA-4816-1 |
The table below lists information on source packages.
| Source Package | Release | Version | Status |
|---|---|---|---|
| mediawiki (PTS) | stretch (security) | 1:1.27.7-1+deb9u11 | fixed |
| stretch (lts), stretch | 1:1.27.7-1+deb9u13 | fixed | |
| buster (security), buster, buster (lts) | 1:1.31.16-1+deb10u8 | fixed | |
| bullseye | 1:1.35.13-1+deb11u2 | fixed | |
| bullseye (security) | 1:1.35.13-1+deb11u3 | fixed | |
| bookworm (security), bookworm | 1:1.39.10-1~deb12u1 | fixed | |
| sid, trixie | 1:1.39.10-1 | fixed |
The information below is based on the following data on fixed versions.
| Package | Type | Release | Fixed Version | Urgency | Origin | Debian Bugs |
|---|---|---|---|---|---|---|
| mediawiki | source | stretch | 1:1.27.7-1~deb9u7 | DLA-2504-1 | ||
| mediawiki | source | buster | 1:1.31.12-1~deb10u1 | DSA-4816-1 | ||
| mediawiki | source | (unstable) | 1:1.35.1-1 |
https://phabricator.wikimedia.org/T120883
https://lists.wikimedia.org/pipermail/wikitech-l/2020-December/094126.html