UBUNTU-CVE-2021-30159

See a problem?
Please try reporting it to the source first.
Source
https://ubuntu.com/security/CVE-2021-30159
Import Source
https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2021/UBUNTU-CVE-2021-30159.json
JSON Data
https://api.osv.dev/v1/vulns/UBUNTU-CVE-2021-30159
Upstream
Published
2021-04-09T07:15:00Z
Modified
2026-05-27T10:16:07Z
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
  • Ubuntu - medium
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

Affected packages

Ubuntu:Pro:20.04:LTS / mediawiki

Package

Name
mediawiki
Purl
pkg:deb/ubuntu/mediawiki?arch=source&distro=esm-apps%2Ffocal

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0 Unknown introduced version / All previous versions are affected

Affected versions

1:1.*
1:1.31.2-1ubuntu1
1:1.31.5-1
1:1.31.5-1ubuntu1
1:1.31.5-2
1:1.31.5-3
1:1.31.5-3ubuntu1
1:1.31.6-1
1:1.31.7-1
1:1.31.7-1ubuntu0.1~esm1

Ecosystem specific 

{
    "binaries": [
        {
            "binary_name": "mediawiki",
            "binary_version": "1:1.31.7-1ubuntu0.1~esm1"
        },
        {
            "binary_name": "mediawiki-classes",
            "binary_version": "1:1.31.7-1ubuntu0.1~esm1"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2021/UBUNTU-CVE-2021-30159.json"

Ubuntu:Pro:22.04:LTS / mediawiki

Package

Name
mediawiki
Purl
pkg:deb/ubuntu/mediawiki?arch=source&distro=esm-apps%2Fjammy

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0 Unknown introduced version / All previous versions are affected

Affected versions

1:1.*
1:1.35.3-1
1:1.35.4-1
1:1.35.5-1
1:1.35.5-1ubuntu1
1:1.35.5-1ubuntu2
1:1.35.5-1ubuntu3
1:1.35.6-1
1:1.35.6-1ubuntu0.1~esm1

Ecosystem specific 

{
    "binaries": [
        {
            "binary_name": "mediawiki",
            "binary_version": "1:1.35.6-1ubuntu0.1~esm1"
        },
        {
            "binary_name": "mediawiki-classes",
            "binary_version": "1:1.35.6-1ubuntu0.1~esm1"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2021/UBUNTU-CVE-2021-30159.json"

Ubuntu:Pro:24.04:LTS / mediawiki

Package

Name
mediawiki
Purl
pkg:deb/ubuntu/mediawiki?arch=source&distro=esm-apps%2Fnoble

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0 Unknown introduced version / All previous versions are affected

Affected versions

1:1.*
1:1.39.4-2
1:1.39.5-1
1:1.39.6-1
1:1.39.7-1
1:1.39.7-1ubuntu0.1~esm1

Ecosystem specific 

{
    "binaries": [
        {
            "binary_name": "mediawiki",
            "binary_version": "1:1.39.7-1ubuntu0.1~esm1"
        },
        {
            "binary_name": "mediawiki-classes",
            "binary_version": "1:1.39.7-1ubuntu0.1~esm1"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2021/UBUNTU-CVE-2021-30159.json"

Ubuntu:25.10 / mediawiki

Package

Name
mediawiki
Purl
pkg:deb/ubuntu/mediawiki?arch=source&distro=questing

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0 Unknown introduced version / All previous versions are affected

Affected versions

1:1.*
1:1.43.1+dfsg-1
1:1.43.1+dfsg-2
1:1.43.3+dfsg-1

Ecosystem specific 

{
    "binaries": [
        {
            "binary_name": "mediawiki",
            "binary_version": "1:1.43.3+dfsg-1"
        },
        {
            "binary_name": "mediawiki-classes",
            "binary_version": "1:1.43.3+dfsg-1"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2021/UBUNTU-CVE-2021-30159.json"

Ubuntu:26.04:LTS / mediawiki

Package

Name
mediawiki
Purl
pkg:deb/ubuntu/mediawiki?arch=source&distro=resolute

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0 Unknown introduced version / All previous versions are affected

Affected versions

1:1.*
1:1.43.3+dfsg-1
1:1.43.5+dfsg-1
1:1.43.6+dfsg-2
1:1.43.8+dfsg-1
1:1.43.8+dfsg-2

Ecosystem specific 

{
    "binaries": [
        {
            "binary_name": "mediawiki",
            "binary_version": "1:1.43.8+dfsg-2"
        },
        {
            "binary_name": "mediawiki-classes",
            "binary_version": "1:1.43.8+dfsg-2"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2021/UBUNTU-CVE-2021-30159.json"