CVE-2021-30159

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Source
https://cve.org/CVERecord?id=CVE-2021-30159
Import Source
https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2021-30159.json
JSON Data
https://api.test.osv.dev/v1/vulns/CVE-2021-30159
Aliases
Downstream
Published
2021-04-09T07:15:16.277Z
Modified
2026-04-16T00:10:22.752576096Z
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.

Database specific 
{
    "unresolved_ranges": [
        {
            "source": "CPE_FIELD",
            "cpe": "cpe:2.3:o:debian:debian_linux:10.0:*:*:*:*:*:*:*",
            "extracted_events": [
                {
                    "last_affected": "10.0"
                }
            ]
        },
        {
            "source": "CPE_FIELD",
            "cpe": "cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:*",
            "extracted_events": [
                {
                    "last_affected": "9.0"
                }
            ]
        },
        {
            "source": "CPE_FIELD",
            "cpe": "cpe:2.3:o:fedoraproject:fedora:33:*:*:*:*:*:*:*",
            "extracted_events": [
                {
                    "last_affected": "33"
                }
            ]
        },
        {
            "source": "CPE_FIELD",
            "cpe": "cpe:2.3:o:fedoraproject:fedora:34:*:*:*:*:*:*:*",
            "extracted_events": [
                {
                    "last_affected": "34"
                }
            ]
        }
    ]
}
References

Affected packages

Git / github.com/wikimedia/mediawiki

Affected ranges

Type
GIT
Repo
https://github.com/wikimedia/mediawiki
Events
Introduced
0 Unknown introduced commit / All previous commits are affected
Fixed
ef13e11da4bcab62a8cc6f5459cd094e6881f326
Introduced
0fbb878ef366477535a709b0c2564bdcf4b176d1
Fixed
e5823c068a2e0d8af72538fe5cd152ddb43c58e9
Database specific 
{
    "source": "CPE_FIELD",
    "cpe": "cpe:2.3:a:mediawiki:mediawiki:*:*:*:*:*:*:*:*",
    "extracted_events": [
        {
            "introduced": "0"
        },
        {
            "fixed": "1.31.12"
        },
        {
            "introduced": "1.32.0"
        },
        {
            "fixed": "1.35.2"
        }
    ]
}

Affected versions

1.*
1.1.0
1.3.0beta1
1.31.0
1.31.0-rc.0
1.31.0-rc.1
1.31.0-rc.2
1.31.1
1.31.10
1.31.11
1.31.2
1.31.3
1.31.4
1.31.5
1.31.6
1.31.7
1.31.8
1.31.9
1.35.0
1.35.0-rc.0
1.35.0-rc.1
1.35.0-rc.2
1.35.0-rc.3
1.35.1
1.5.0alpha1
1.5.0alpha2
1.5.0beta1
1.5.0beta2
1.5.0beta3
1.5.0beta4
1.6.0

Database specific

source 
"https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2021-30159.json"