CVE-2021-31552

CVSS V2 Medium 5.5 CVSS V3 Medium 5.4
Description
An issue was discovered in the AbuseFilter extension for MediaWiki through 1.35.2. It incorrectly executed certain rules related to blocking accounts after account creation. Such rules would allow for user accounts to be created while blocking only the IP address used to create an account (and not the user account itself). Such rules could also be used by a nefarious, unprivileged user to catalog and enumerate any number of IP addresses related to these account creations.
Overview
  • CVE ID
  • CVE-2021-31552
  • Assigner
  • cve@mitre.org
  • Vulnerability Status
  • Analyzed
  • Published Version
  • 2021-04-22T03:15:08
  • Last Modified Date
  • 2022-07-12T17:42:04
Weakness Enumerations
CWE URL
CWE-863 http://cwe.mitre.org/data/definitions/863.html
CPE Configuration (Product)
CPE Vulnerable Operator Version Start Version End
cpe:2.3:a:mediawiki:mediawiki:*:*:*:*:*:*:*:* 1 OR 1.35.2
CVSS Version 2
  • Version
  • 2.0
  • Vector String
  • AV:N/AC:L/Au:S/C:P/I:P/A:N
  • Access Vector
  • NETWORK
  • Access Compatibility
  • LOW
  • Authentication
  • SINGLE
  • Confidentiality Impact
  • PARTIAL
  • Integrity Impact
  • PARTIAL
  • Availability Impact
  • NONE
  • Base Score
  • 5.5
  • Severity
  • MEDIUM
  • Exploitability Score
  • 8
  • Impact Score
  • 4.9
CVSS Version 3
  • Version
  • 3.1
  • Vector String
  • CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N
  • Attack Vector
  • NETWORK
  • Attack Compatibility
  • LOW
  • Privileges Required
  • LOW
  • User Interaction
  • NONE
  • Scope
  • UNCHANGED
  • Confidentiality Impact
  • LOW
  • Availability Impact
  • NONE
  • Base Score
  • 5.4
  • Base Severity
  • MEDIUM
  • Exploitability Score
  • 2.8
  • Impact Score
  • 2.5
References
Reference URL Reference Tags
https://phabricator.wikimedia.org/T152394 Third Party Advisory
https://gerrit.wikimedia.org/r/q/I8bae477ad7e4d0190335363ac2decf28e4313da1 Issue Tracking Vendor Advisory
Sources
Source Name Source URL
NIST https://nvd.nist.gov/vuln/detail/CVE-2021-31552
MITRE https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-31552
History
Created Old Value New Value Data Type Notes
2022-05-10 07:14:44 Added to TrackCVE
2022-12-06 02:15:29 2021-04-22T03:15Z 2021-04-22T03:15:08 CVE Published Date updated
2022-12-06 02:15:29 2022-07-12T17:42:04 CVE Modified Date updated
2022-12-06 02:15:29 Analyzed Vulnerability Status updated