CVE-2020-15164

Authentication Bypass in Scratch Login (mediawiki-scratch-login)

Description

in Scratch Login (MediaWiki extension) before version 1.1, any account can be logged into by using the same username with leading, trailing, or repeated underscore(s), since those are treated as whitespace and trimmed by MediaWiki. This affects all users on any wiki using this extension. Since version 1.1, comments by users whose usernames would be trimmed on MediaWiki are ignored when searching for the verification code.

Categories

10.0
CVSS
Severity: Critical
CVSS 3.1 •
CVSS 2.0 •
EPSS 0.26%
Third-Party Advisory github.com Third-Party Advisory github.com
Affected: InternationalScratchWiki mediawiki-scratch-login
Published at:
Updated at:

References

Link Tags
https://github.com/InternationalScratchWiki/mediawiki-scratch-login/security/advisories/GHSA-8fq5-g4m5-6j43 third party advisory
https://github.com/InternationalScratchWiki/mediawiki-scratch-login/commit/70849ef375016a1061490c8c4744046dbfc3e679 third party advisory patch

Frequently Asked Questions

What is the severity of CVE-2020-15164?
CVE-2020-15164 has been scored as a critical severity vulnerability.
How to fix CVE-2020-15164?
To fix CVE-2020-15164, 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-2020-15164 being actively exploited in the wild?
As for now, there are no information to confirm that CVE-2020-15164 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-2020-15164?
CVE-2020-15164 affects InternationalScratchWiki mediawiki-scratch-login.
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