CVE-2020-15005
LOW severity · CVSS 3.1
3.1CVSS LOW
Summary
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.
Impact & exploitability
Attack vectorNetwork
Attack complexityHigh
Privileges requiredNone
User interactionRequired
Confidentiality impactLow
Integrity impactNone
Availability impactNone
Exploit probability (EPSS)1%
CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:L/I:N/A:N
Affected products we track (1)
Recommendation
Apply the vendor fix in your normal patch cycle. Open any affected product above for its exact safe version.
Official patch: https://phabricator.wikimedia.org/T248947 ↗
Additional information
- NVD record
- https://phabricator.wikimedia.org/T248947Patch
- https://gerrit.wikimedia.org/r/plugins/gitiles/mediawiki/core/+/REL1_31/RELEASE-NOTES-1.31Advisory
- https://gerrit.wikimedia.org/r/plugins/gitiles/mediawiki/core/+/REL1_33/RELEASE-NOTES-1.33Advisory
- https://gerrit.wikimedia.org/r/plugins/gitiles/mediawiki/core/+/REL1_34/RELEASE-NOTES-1.34Advisory
- https://lists.wikimedia.org/pipermail/wikitech-l/2020-June/093535.htmlAdvisory
- https://lists.debian.org/debian-lts-announce/2020/12/msg00034.htmlAdvisory
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/EEZIMLJMJS72SJXPYL736XMUAVCRQD2H/
- https://www.debian.org/security/2020/dsa-4767Advisory