CVE-2020-15005: Infoleak
First published: Wed Jun 24 2020(Updated: )
In MediaWiki before 1.31.8, 1.32.x and 1.33.x before 1.33.4, and 1.34.x before 1.34.2, private wikis behind a caching server using the img_auth.php image authorization security feature may have had their files cached publicly, so any unauthorized user could view them. This occurs because Cache-Control and Vary headers were mishandled.
Credit: cve@mitre.org cve@mitre.org
| Affected Software | Affected Version | How to fix |
|---|---|---|
| debian/mediawiki | 1:1.31.16-1+deb10u2 1:1.31.16-1+deb10u6 1:1.35.11-1~deb11u1 1:1.35.13-1~deb11u1 1:1.39.4-1~deb12u1 1:1.39.5-1~deb12u1 1:1.39.5-1 | |
| composer/mediawiki/core | >=1.34.0<1.34.2 | 1.34.2 |
| composer/mediawiki/core | >=1.32.0<1.33.4 | 1.33.4 |
| composer/mediawiki/core | <1.31.8 | 1.31.8 |
| MediaWiki | <1.31.8 | |
| MediaWiki | >=1.32.0<1.33.4 | |
| MediaWiki | >=1.34<1.34.2 | |
| Fedora | =32 | |
| Debian | =9.0 | |
| Debian | =10.0 |
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Reference Links
- https://lists.wikimedia.org/pipermail/wikitech-l/2020-June/093535.html
- https://security-tracker.debian.org/tracker/CVE-2020-15005
- https://gerrit.wikimedia.org/r/plugins/gitiles/mediawiki/core/+/REL1_31/RELEASE-NOTES-1.31
- https://gerrit.wikimedia.org/r/plugins/gitiles/mediawiki/core/+/REL1_33/RELEASE-NOTES-1.33
- https://gerrit.wikimedia.org/r/plugins/gitiles/mediawiki/core/+/REL1_34/RELEASE-NOTES-1.34
- https://lists.debian.org/debian-lts-announce/2020/12/msg00034.html
- https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/EEZIMLJMJS72SJXPYL736XMUAVCRQD2H/
- https://phabricator.wikimedia.org/T248947
- https://www.debian.org/security/2020/dsa-4767
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/EEZIMLJMJS72SJXPYL736XMUAVCRQD2H/
- https://nvd.nist.gov/vuln/detail/CVE-2020-15005
- https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/EEZIMLJMJS72SJXPYL736XMUAVCRQD2H
- https://github.com/advisories/GHSA-xpv7-93cm-4mxv (Advisory)
Frequently Asked Questions
What is the severity of CVE-2020-15005?
CVE-2020-15005 is considered a medium severity vulnerability due to unauthorized access to private files on MediaWiki installations.
How do I fix CVE-2020-15005?
To mitigate CVE-2020-15005, upgrade MediaWiki to versions 1.31.8, 1.33.4, or 1.34.2 or later.
What systems are affected by CVE-2020-15005?
CVE-2020-15005 affects MediaWiki versions before 1.31.8, 1.32.x, 1.33.x before 1.33.4, and 1.34.x before 1.34.2.
Can unauthenticated users access files in private wikis due to CVE-2020-15005?
Yes, CVE-2020-15005 allows unauthorized users to access files cached publicly from private wikis.
Is there a known workaround for CVE-2020-15005?
There is no widely recognized workaround for CVE-2020-15005; upgrading to the fixed versions is recommended.
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