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7.5
CVSSv3

CVE-2021-35197

Published: 02/07/2021 Updated: 07/11/2023
CVSS v2 Base Score: 5 | Impact Score: 2.9 | Exploitability Score: 10
CVSS v3 Base Score: 7.5 | Impact Score: 3.6 | Exploitability Score: 3.9
VMScore: 445
Vector: AV:N/AC:L/Au:N/C:N/I:P/A:N
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Vulnerability Summary

In MediaWiki prior to 1.31.15, 1.32.x up to and including 1.35.x prior to 1.35.3, and 1.36.x prior to 1.36.1, bots have certain unintended API access. When a bot account has a "sitewide block" applied, it is able to still "purge" pages through the MediaWiki Action API (which a "sitewide block" should have prevented).

Vulnerability Trend

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mediawiki mediawiki

debian debian linux 9.0

debian debian linux 10.0

debian debian linux 11.0

fedoraproject fedora 33

fedoraproject fedora 34

fedoraproject fedora 35

Vendor Advisories

Debian Security Advisories: DSA-4979-1 mediawiki -- security update
Multiple security issues were found in MediaWiki, a website engine for collaborative work, which could result in cross-site scripting, denial of service and a bypass of restrictions in the Replace Text extension For the oldstable distribution (buster), these problems have been fixed in version 1:13116-1~deb10u1 For the stable distribution (bull ...
Red Hat: CVE-2021-35197
In MediaWiki before 13115, 132x through 135x before 1353, and 136x before 1361, bots have certain unintended API access When a bot account has a "sitewide block" applied, it is able to still "purge" pages through the MediaWiki Action API (which a "sitewide block" should have prevented) ...
Arch Linux Issues:
A security issue has been found in MediaWiki before version 1361 that allows blocked users to purge pages ...

References

CWE-863https://phabricator.wikimedia.org/T280226https://security.gentoo.org/glsa/202107-40https://www.debian.org/security/2021/dsa-4979https://lists.debian.org/debian-lts-announce/2021/10/msg00003.htmlhttps://lists.wikimedia.org/hyperkitty/list/mediawiki-announce%40lists.wikimedia.org/thread/YR3X4L2CPSEJVSY543AWEO65TD6APXHP/https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/QNEAI2T3Y65I55ZB6UE6RMC662RZTGRX/https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/CJDYJQWT43GBD6GNQ4OW7JOZ6WQ6DZTN/https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/MDBPECBWN6LWNSWIQMVXK6PP4YFEUYHA/https://nvd.nist.govhttps://www.debian.org/security/2021/dsa-4979
CVSSv3
CVSSv2
CVSSv3
VMScore
Recommendations:
NULL pointer dereferenceCVE-2023-52689CVE-2024-23803client sideCVE-2023-52696information disclosureCVE-2024-35843CVE-2024-27130CVE-2023-52697
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