CVE-2021-30159
- Source
- https://nvd.nist.gov/vuln/detail/CVE-2021-30159
- Import Source
- https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2021-30159.json
- JSON Data
- https://api.osv.dev/v1/vulns/CVE-2021-30159
- Aliases
- Related
- Published
- 2021-04-09T07:15:16Z
- Modified
- 2024-10-12T07:29:48.819766Z
- Severity
-
- 4.3 (Medium) CVSS_V3 - CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N CVSS Calculator
- Summary
- [none]
- Details
-
An issue was discovered in MediaWiki before 1.31.12 and 1.32.x through 1.35.x before 1.35.2. Users can bypass intended restrictions on deleting pages in certain "fast double move" situations. MovePage::isValidMoveTarget() uses FOR UPDATE, but it's only called if Title::getArticleID() returns non-zero with no special flags. Next, MovePage::moveToInternal() will delete the page if getArticleID(READ_LATEST) is non-zero. Therefore, if the page is missing in the replica DB, isValidMove() will return true, and then moveToInternal() will unconditionally delete the page if it can be found in the master.
- References
-
- https://phabricator.wikimedia.org/T272386
- https://security.gentoo.org/glsa/202107-40
- https://www.debian.org/security/2021/dsa-4889
- https://lists.debian.org/debian-lts-announce/2021/05/msg00006.html
- https://lists.debian.org/debian-lts-announce/2021/05/msg00003.html
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/26UJGHF7LJDOCQN6A3Z4PM7PYRKENJHE/
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/2OMSV7B2TCFBOCICN3B4SMQP5HVRJQIT/
- https://security-tracker.debian.org/tracker/CVE-2021-30159
Affected packages
Debian:11 / mediawiki
Package
- Name
- mediawiki
- Purl
- pkg:deb/debian/mediawiki?arch=source
Debian:12 / mediawiki
Package
- Name
- mediawiki
- Purl
- pkg:deb/debian/mediawiki?arch=source
Debian:13 / mediawiki
Package
- Name
- mediawiki
- Purl
- pkg:deb/debian/mediawiki?arch=source