Vulnerability Name:

CVE-2020-35478 (CCN-193550)

Assigned:2020-12-17
Published:2020-12-17
Updated:2022-10-05
Summary:MediaWiki before 1.35.1 allows XSS via BlockLogFormatter.php. MediaWiki:blanknamespace potentially can be output as raw HTML with SCRIPT tags via LogFormatter::makePageLink(). This affects MediaWiki 1.33.0 and later.
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-2020-35478

Source: XF
Type: UNKNOWN
mediawiki-cve202035478-xss(193550)

Source: FEDORA
Type: Mailing List, Third Party Advisory
FEDORA-2020-0be2d40e13

Source: CCN
Type: MediaWiki Mailing List, Thu Dec 17 23:16:51 UTC 2020
Security and maintenance release: 1.31.11 / 1.35.1

Source: MISC
Type: Mailing List, Release Notes, Vendor Advisory
https://lists.wikimedia.org/pipermail/mediawiki-announce/2020-December/000268.html

Source: MISC
Type: Exploit, Third Party Advisory
https://phabricator.wikimedia.org/T268938

Vulnerable Configuration:Configuration 1:
  • cpe:/a:mediawiki:mediawiki:*:*:*:*:*:*:*:* (Version >= 1.33.0 and < 1.35.1)

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

    • Configuration CCN 1:
  • cpe:/a:mediawiki:mediawiki:1.35:*:*:*:*:*:*:*
  • OR cpe:/a:mediawiki:mediawiki:1.31.10:*:*:*:*:*:*:*

    • * Denotes that component is vulnerable
    BACK
    mediawiki mediawiki *
    fedoraproject fedora 33
    mediawiki mediawiki 1.35
    mediawiki mediawiki 1.31.10