Vulnerability Name:

CVE-2020-25812 (CCN-188948)

Assigned:2020-09-24
Published:2020-09-24
Updated:2022-01-01
Summary:An issue was discovered in MediaWiki 1.34.x before 1.34.4. On Special:Contributions, the NS filter uses unescaped messages as keys in the option key for an HTMLForm specifier. This is vulnerable to a mild XSS if one of those messages is changed to include raw HTML.
CVSS v3 Severity:6.1 Medium (CVSS v3.1 Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N)
5.8 Medium (Temporal CVSS v3.1 Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N/E:H/RL:O/RC:C)
Exploitability Metrics:Attack Vector (AV): Network
Attack Complexity (AC): Low
Privileges Required (PR): None
User Interaction (UI): Required
Scope:Scope (S): Changed
Impact Metrics:Confidentiality (C): Low
Integrity (I): Low
Availibility (A): None
6.1 Medium (CCN CVSS v3.1 Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N)
5.8 Medium (CCN Temporal CVSS v3.1 Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N/E:H/RL:O/RC:C)
Exploitability Metrics:Attack Vector (AV): Network
Attack Complexity (AC): Low
Privileges Required (PR): None
User Interaction (UI): Required
Scope:Scope (S): Changed
Impact Metrics:Confidentiality (C): Low
Integrity (I): Low
Availibility (A): None
CVSS v2 Severity:4.3 Medium (CVSS v2 Vector: AV:N/AC:M/Au:N/C:N/I:P/A:N)
Exploitability Metrics:Access Vector (AV): Network
Access Complexity (AC): Medium
Authentication (Au): None
Impact Metrics:Confidentiality (C): None
Integrity (I): Partial
Availibility (A): None
5.5 Medium (CCN CVSS v2 Vector: AV:N/AC:L/Au:S/C:P/I:P/A:N)
Exploitability Metrics:Access Vector (AV): Network
Access Complexity (AC): Low
Athentication (Au): Single_Instance
Impact Metrics:Confidentiality (C): Partial
Integrity (I): Partial
Availibility (A): None
Vulnerability Type:CWE-79
Vulnerability Consequences:Cross-Site Scripting
References:Source: MITRE
Type: CNA
CVE-2020-25812

Source: XF
Type: UNKNOWN
mediawiki-cve202025812-xss(188948)

Source: MISC
Type: Vendor Advisory
https://gerrit.wikimedia.org/g/mediawiki/core/+/ad4a3ba45fb955aa8c0eb3c83809b16b40a498b9/includes/specials/SpecialContributions.php#592

Source: FEDORA
Type: Mailing List, Third Party Advisory
FEDORA-2020-a4802c53d9

Source: CCN
Type: MediaWiki Mailing List, Thu Sep 24 15:05:38 UTC 2020
[MediaWiki-l] Security and maintenance release: 1.31.9 / 1.34.3

Source: CONFIRM
Type: Mailing List, Vendor Advisory
https://lists.wikimedia.org/pipermail/mediawiki-l/2020-September/048480.html

Source: MISC
Type: Mailing List, Vendor Advisory
https://lists.wikimedia.org/pipermail/mediawiki-l/2020-September/048488.html

Source: CCN
Type: Phabricator Web site
Non-jqueryMsg version of mw.message(…).parse() doesn't escape HTML (CVE-2020-25828)

Source: CCN
Type: MediaWiki Web site
MediaWiki

Source: CCN
Type: WhiteSource Vulnerability Database
CVE-2020-25812

Vulnerable Configuration:Configuration 1:
  • cpe:/a:mediawiki:mediawiki:*:*:*:*:*:*:*:* (Version >= 1.34.0 and < 1.34.4)

    • Configuration 2:
  • cpe:/o:fedoraproject:fedora:33:*:*:*:*:*:*:*

    • Configuration CCN 1:
  • cpe:/a:mediawiki:mediawiki:1.32.1:*:*:*:*:*:*:*
  • OR cpe:/a:mediawiki:mediawiki:1.33.0:-:*:*:*:*:*:*
  • OR cpe:/a:mediawiki:mediawiki:1.31.7:*:*:*:*:*:*:*
  • OR cpe:/a:mediawiki:mediawiki:1.33.3:*:*:*:*:*:*:*
  • OR cpe:/a:mediawiki:mediawiki:1.34.1:*:*:*:*:*:*:*
  • OR cpe:/a:mediawiki:mediawiki:1.34.3:*:*:*:*:*:*:*

    • * Denotes that component is vulnerable
    BACK
    mediawiki mediawiki *
    fedoraproject fedora 33
    mediawiki mediawiki 1.32.1
    mediawiki mediawiki 1.33.0 -
    mediawiki mediawiki 1.31.7
    mediawiki mediawiki 1.33.3
    mediawiki mediawiki 1.34.1
    mediawiki mediawiki 1.34.3