Executive Summary

Informations
Name CVE-2021-30159 First vendor Publication 2021-04-09
Vendor Cve Last vendor Modification 2023-11-07

Security-Database Scoring CVSS v3

Cvss vector : CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N
Overall CVSS Score 4.3
Base Score 4.3 Environmental Score 4.3
impact SubScore 1.4 Temporal Score 4.3
Exploitabality Sub Score 2.8
 
Attack Vector Network Attack Complexity Low
Privileges Required Low User Interaction None
Scope Unchanged Confidentiality Impact None
Integrity Impact Low Availability Impact None
Calculate full CVSS 3.0 Vectors scores

Security-Database Scoring CVSS v2

Cvss vector : (AV:N/AC:L/Au:S/C:N/I:P/A:N)
Cvss Base Score 4 Attack Range Network
Cvss Impact Score 2.9 Attack Complexity Low
Cvss Expoit Score 8 Authentication Requires single instance
Calculate full CVSS 2.0 Vectors scores

Detail

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.

Original Source

Url : http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-30159

CPE : Common Platform Enumeration

TypeDescriptionCount
Application 321
Os 2
Os 2

Sources (Detail)

https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedora...
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedora...
Source Url
DEBIAN https://www.debian.org/security/2021/dsa-4889
GENTOO https://security.gentoo.org/glsa/202107-40
MISC https://phabricator.wikimedia.org/T272386
MLIST https://lists.debian.org/debian-lts-announce/2021/05/msg00003.html
https://lists.debian.org/debian-lts-announce/2021/05/msg00006.html

Alert History

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Date Informations
2023-11-07 21:35:15
  • Multiple Updates
2022-05-28 00:27:29
  • Multiple Updates
2021-08-05 01:42:47
  • Multiple Updates
2021-07-17 13:22:59
  • Multiple Updates
2021-06-05 00:22:55
  • Multiple Updates
2021-05-07 21:23:21
  • Multiple Updates
2021-05-07 05:23:00
  • Multiple Updates
2021-05-05 21:23:14
  • Multiple Updates
2021-05-05 13:23:11
  • Multiple Updates
2021-05-04 14:10:03
  • Multiple Updates
2021-04-25 05:22:45
  • Multiple Updates
2021-04-22 09:22:47
  • Multiple Updates
2021-04-22 00:23:16
  • Multiple Updates
2021-04-19 17:22:58
  • Multiple Updates
2021-04-11 17:22:57
  • Multiple Updates
2021-04-09 17:23:29
  • Multiple Updates
2021-04-09 13:23:01
  • First insertion