CVE-2020-15179

HTML Injection in ScratchSig

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.

Category

8.0
CVSS
Severity: High
CVSS 3.1 •
CVSS 2.0 •
EPSS 0.43%
Third-Party Advisory github.com Third-Party Advisory github.com
Affected: InternationalScratchWiki wiki-scratchsig
Published at:
Updated at:

References

Link Tags
https://github.com/InternationalScratchWiki/wiki-scratchsig/security/advisories/GHSA-gp9v-pg9f-vmp6 third party advisory
https://github.com/InternationalScratchWiki/wiki-scratchsig/commit/4160a39a20eebeb63a59eb7597a91b961eca6388 third party advisory patch

Frequently Asked Questions

What is the severity of CVE-2020-15179?
CVE-2020-15179 has been scored as a high severity vulnerability.
How to fix CVE-2020-15179?
To fix CVE-2020-15179, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2020-15179 being actively exploited in the wild?
As for now, there are no information to confirm that CVE-2020-15179 is being actively exploited. According to its EPSS score, there is a ~0% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
What software or system is affected by CVE-2020-15179?
CVE-2020-15179 affects InternationalScratchWiki wiki-scratchsig.
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