Vulnerability CVE-2020-25814

Vulnerability Name:

CVE-2020-25814

Assigned:

2020-09-27

Published:

2020-09-27

Updated:

2022-01-01

Summary:

In MediaWiki before 1.31.10 and 1.32.x through 1.34.x before 1.34.4, XSS related to jQuery can occur. The attacker creates a message with [javascript:payload xss] and turns it into a jQuery object with mw.message().parse(). The expected result is that the jQuery object does not contain an <a> tag (or it does not have a href attribute, or it's empty, etc.). The actual result is that the object contains an <a href ="javascript... that executes when clicked.

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)

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)

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

4.3 Medium (CCN 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 Athentication (Au): None
Impact Metrics:	Confidentiality (C): None Integrity (I): Partial Availibility (A): None

Vulnerability Type:

CWE-79

References:

Source: MITRE
Type: CNA
CVE-2020-25814

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

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

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

Source: MISC
Type: Vendor Advisory
https://www.mediawiki.org/wiki/ResourceLoader/Core_modules#mediawiki.jqueryMsg

Vulnerable Configuration:

Configuration 1:

cpe:/a:mediawiki:mediawiki:*:*:*:*:*:*:*:* (Version < 1.31.10)

OR cpe:/a:mediawiki:mediawiki:*:*:*:*:*:*:*:* (Version >= 1.32.0 and < 1.34.4)

Configuration 2:

cpe:/o:fedoraproject:fedora:33:*:*:*:*:*:*:*

Denotes that component is vulnerable

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