CVE-2021-30159
"MediaWiki Page Deletion Privilege Escalation"
Description
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.
INFO
Published Date :
April 9, 2021, 7:15 a.m.
Last Modified :
Nov. 7, 2023, 3:32 a.m.
Source :
[email protected]
Remotely Exploitable :
Yes !
Impact Score :
1.4
Exploitability Score :
2.8
Public PoC/Exploit Available at Github
CVE-2021-30159 has a 1 public PoC/Exploit available at Github.
Go to the Public Exploits tab to see the list.
Affected Products
The following products are affected by CVE-2021-30159
vulnerability.
Even if cvefeed.io is aware of the exact versions of the
products
that
are
affected, the information is not represented in the table below.
References to Advisories, Solutions, and Tools
Here, you will find a curated list of external links that provide in-depth
information, practical solutions, and valuable tools related to
CVE-2021-30159.
| URL | Resource |
|---|---|
| https://lists.debian.org/debian-lts-announce/2021/05/msg00003.html | Third Party Advisory |
| https://lists.debian.org/debian-lts-announce/2021/05/msg00006.html | Mailing List Third Party Advisory |
| https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/26UJGHF7LJDOCQN6A3Z4PM7PYRKENJHE/ | |
| https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/2OMSV7B2TCFBOCICN3B4SMQP5HVRJQIT/ | |
| https://phabricator.wikimedia.org/T272386 | Exploit Patch Vendor Advisory |
| https://security.gentoo.org/glsa/202107-40 | Third Party Advisory |
| https://www.debian.org/security/2021/dsa-4889 | Third Party Advisory |
We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).
Automatic monitor github cve using Github Actions
Python
Results are limited to the first 15 repositories due to potential performance issues.
The following list is the news that have been mention
CVE-2021-30159 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2021-30159 vulnerability over time.
Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.
-
CVE Modified by [email protected]
May. 14, 2024
Action Type Old Value New Value -
CVE Modified by [email protected]
Nov. 07, 2023
Action Type Old Value New Value Added Reference MITRE https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/26UJGHF7LJDOCQN6A3Z4PM7PYRKENJHE/ [No types assigned] Added Reference MITRE https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/2OMSV7B2TCFBOCICN3B4SMQP5HVRJQIT/ [No types assigned] Removed Reference MITRE https://lists.fedoraproject.org/archives/list/[email protected]/message/26UJGHF7LJDOCQN6A3Z4PM7PYRKENJHE/ Removed Reference MITRE https://lists.fedoraproject.org/archives/list/[email protected]/message/2OMSV7B2TCFBOCICN3B4SMQP5HVRJQIT/ -
Modified Analysis by [email protected]
May. 27, 2022
Action Type Old Value New Value Changed Reference Type https://security.gentoo.org/glsa/202107-40 No Types Assigned https://security.gentoo.org/glsa/202107-40 Third Party Advisory -
CVE Modified by [email protected]
Jul. 17, 2021
Action Type Old Value New Value Added Reference https://security.gentoo.org/glsa/202107-40 [No Types Assigned] -
Modified Analysis by [email protected]
Jun. 04, 2021
Action Type Old Value New Value Changed Reference Type https://lists.debian.org/debian-lts-announce/2021/05/msg00006.html No Types Assigned https://lists.debian.org/debian-lts-announce/2021/05/msg00006.html Mailing List, Third Party Advisory Changed Reference Type https://lists.fedoraproject.org/archives/list/[email protected]/message/26UJGHF7LJDOCQN6A3Z4PM7PYRKENJHE/ Third Party Advisory https://lists.fedoraproject.org/archives/list/[email protected]/message/26UJGHF7LJDOCQN6A3Z4PM7PYRKENJHE/ Mailing List, Third Party Advisory Changed Reference Type https://lists.fedoraproject.org/archives/list/[email protected]/message/2OMSV7B2TCFBOCICN3B4SMQP5HVRJQIT/ Third Party Advisory https://lists.fedoraproject.org/archives/list/[email protected]/message/2OMSV7B2TCFBOCICN3B4SMQP5HVRJQIT/ Mailing List, Third Party Advisory -
CVE Modified by [email protected]
May. 06, 2021
Action Type Old Value New Value Added Reference https://lists.debian.org/debian-lts-announce/2021/05/msg00006.html [No Types Assigned] -
Modified Analysis by [email protected]
May. 05, 2021
Action Type Old Value New Value Changed Reference Type https://lists.debian.org/debian-lts-announce/2021/05/msg00003.html No Types Assigned https://lists.debian.org/debian-lts-announce/2021/05/msg00003.html Third Party Advisory Changed Reference Type https://lists.fedoraproject.org/archives/list/[email protected]/message/26UJGHF7LJDOCQN6A3Z4PM7PYRKENJHE/ No Types Assigned https://lists.fedoraproject.org/archives/list/[email protected]/message/26UJGHF7LJDOCQN6A3Z4PM7PYRKENJHE/ Third Party Advisory Changed Reference Type https://lists.fedoraproject.org/archives/list/[email protected]/message/2OMSV7B2TCFBOCICN3B4SMQP5HVRJQIT/ No Types Assigned https://lists.fedoraproject.org/archives/list/[email protected]/message/2OMSV7B2TCFBOCICN3B4SMQP5HVRJQIT/ Third Party Advisory Added CPE Configuration OR *cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:* *cpe:2.3:o:debian:debian_linux:10.0:*:*:*:*:*:*:* Added CPE Configuration OR *cpe:2.3:o:fedoraproject:fedora:33:*:*:*:*:*:*:* *cpe:2.3:o:fedoraproject:fedora:34:*:*:*:*:*:*:* -
CVE Modified by [email protected]
May. 05, 2021
Action Type Old Value New Value Added Reference https://lists.debian.org/debian-lts-announce/2021/05/msg00003.html [No Types Assigned] -
CVE Modified by [email protected]
Apr. 24, 2021
Action Type Old Value New Value Added Reference https://lists.fedoraproject.org/archives/list/[email protected]/message/2OMSV7B2TCFBOCICN3B4SMQP5HVRJQIT/ [No Types Assigned] -
CVE Modified by [email protected]
Apr. 22, 2021
Action Type Old Value New Value Added Reference https://lists.fedoraproject.org/archives/list/[email protected]/message/26UJGHF7LJDOCQN6A3Z4PM7PYRKENJHE/ [No Types Assigned] -
Initial Analysis by [email protected]
Apr. 19, 2021
Action Type Old Value New Value Added CVSS V2 NIST (AV:N/AC:L/Au:S/C:N/I:P/A:N) Added CVSS V3.1 NIST AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N Changed Reference Type https://phabricator.wikimedia.org/T272386 No Types Assigned https://phabricator.wikimedia.org/T272386 Exploit, Patch, Vendor Advisory Changed Reference Type https://www.debian.org/security/2021/dsa-4889 No Types Assigned https://www.debian.org/security/2021/dsa-4889 Third Party Advisory Added CWE NIST NVD-CWE-noinfo Added CPE Configuration OR *cpe:2.3:a:mediawiki:mediawiki:*:*:*:*:*:*:*:* versions up to (excluding) 1.31.12 *cpe:2.3:a:mediawiki:mediawiki:*:*:*:*:*:*:*:* versions from (including) 1.32.0 up to (excluding) 1.35.2 -
CVE Modified by [email protected]
Apr. 11, 2021
Action Type Old Value New Value Added Reference https://www.debian.org/security/2021/dsa-4889 [No Types Assigned]
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2021-30159 is
associated with the following CWEs:
Common Attack Pattern Enumeration and Classification (CAPEC)
Common Attack Pattern Enumeration and Classification
(CAPEC)
stores attack patterns, which are descriptions of the common attributes and
approaches employed by adversaries to exploit the CVE-2021-30159
weaknesses.
Exploit Prediction
EPSS is a daily estimate of the probability of exploitation activity being observed over the next 30 days.
0.33 }} 0.18%
score
0.67632
percentile