CVE Vulnerability

CVE-2020-15179

The ScratchSig extension for MediaWiki before version 1.0.1 allows stored Cross-Site Scripting. Using tag inside tag, attackers with edit permission can execute scripts on visitors' browser. With MediaWiki JavaScript API, this can potentially lead to privilege escalation and/or account takeover. This has been patched in release 1.0.1. This has already been deployed to all Scratch Wikis. No workarounds exist other than disabling the extension completely.

4.6 /10

CVSS v2.0 :

V3 Legend

Vector :

Exploitability : 3.9 / Impact : 6.4

Attack Vector

Attack Complexity

Privileges Required

User Interaction

Confidentiality Impact PARTIAL

Integrity Impact PARTIAL

Availability Impact PARTIAL

Scope

9 /10

CVSS v3.0 : CRITICAL

V3 Legend

Vector :

Exploitability : 2.3 / Impact : 6

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required LOW

User Interaction REQUIRED

Confidentiality Impact HIGH

Integrity Impact HIGH

Availability Impact HIGH

Scope CHANGED

References
Link Resource
https://github.com/InternationalScratchWiki/wiki-scratchsig/commit/4160a39a20eebeb63a59eb7597a91b961eca6388 Patch Third Party Advisory
https://github.com/InternationalScratchWiki/wiki-scratchsig/security/advisories/GHSA-gp9v-pg9f-vmp6 Third Party Advisory
Configurations

Configuration 1

cpe:2.3:a:scratch-wiki:scratchsig:*:*:*:*:*:mediawiki:*:*
Information

Published : 2020-09-15 06:15

Updated : 2020-09-22 05:05

NVD link : CVE-2020-15179

Mitre link : CVE-2020-15179

Products Affected
No products.
CWE
CWE-79