by Kastro
Paper/Archive/CVE-2020-15164

CVE-2020-15164

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

EPSS 1%CVSS 10.0
critical.is priorityof 100
44
CVSS 10.0 (CNA, NVD agree)10.0 / 10 × 3030.0Not in CISA KEV+300.0EPSS percentile 67.5.675 × 2013.5No public exploit+100.0SSVC exploitation: unknown+100.0
Description · from the CVE record

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.

Affected

ProductAffectedFixed inSource
mediawiki-scratch-login< 1.1–CNA

Scores by source

GitHub_M (CNA)10.0CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:N
NVD10.0CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:N

References

refgithub.com/InternationalScratchWiki/mediawiki-scratch-login/security/advisories/GHSA-8fq5-g4m5-6j43refgithub.com/InternationalScratchWiki/mediawiki-scratch-login/commit/70849ef375016a1061490c8c4744046dbfc3e679