CVE-2020-15179 — HIGH (8.0)

Vulnerability Description

The ScratchSig extension for MediaWiki before version 1.0.1 allows stored Cross-Site Scripting. Using <script> tag inside <scratchsig> 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.

CVSS Score

8.0

HIGH

CVSS:3.1/AV:N/AC:H/PR:L/UI:R/S:C/C:H/I:H/A:H

Attack Vector

NETWORK

Attack Complexity

HIGH

Privileges Required

LOW

User Interaction

REQUIRED

Scope

CHANGED

Confidentiality

HIGH

Integrity

HIGH

Availability

HIGH

Affected Products

Vendor	Product	Versions
Scratch-Wiki	Scratchsig	< 1.0.1

Related Weaknesses (CWE)

CWE-79

References

https://github.com/InternationalScratchWiki/wiki-scratchsig/commit/4160a39a20eebPatchThird Party Advisory
https://github.com/InternationalScratchWiki/wiki-scratchsig/security/advisories/Third Party Advisory
https://github.com/InternationalScratchWiki/wiki-scratchsig/commit/4160a39a20eebPatchThird Party Advisory
https://github.com/InternationalScratchWiki/wiki-scratchsig/security/advisories/Third Party Advisory

FAQ

What is CVE-2020-15179?

CVE-2020-15179 is a vulnerability with a CVSS score of 8.0 (HIGH). The ScratchSig extension for MediaWiki before version 1.0.1 allows stored Cross-Site Scripting. Using <script> tag inside <scratchsig> tag, attackers with edit permission can execute scripts on visito...

How severe is CVE-2020-15179?

CVE-2020-15179 has been rated HIGH with a CVSS base score of 8.0/10. Review the CVSS metrics above for detailed severity breakdown.

Is there a patch for CVE-2020-15179?

Check the references section above for vendor advisories and patch information. Affected products include: Scratch-Wiki Scratchsig.