Vulnerability · Published Aug 28, 2020 · Assigned by GitHub_M

CVE-2020-15164Authentication Bypass in Scratch Login (mediawiki-scratch-login)

Critical 10.0

In plain English

A critical-severity improper authentication in mediawiki-scratch-login from InternationalScratchWiki. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 1.2% (higher than 68% of all known vulnerabilities).

Severity (CVSS 3.1)10.0Critical

Exploit odds (30 days)1.2%top 32.3% of all CVEs

Exploited in the wildNo reportsnot in CISA KEV

Attack toolingNoneno public tooling known

Official 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.

Affected products (as reported)

Vendor	Product	Versions
InternationalScratchWiki	mediawiki-scratch-login	< 1.1

Weakness: CWE-287 · Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:N

In plain English

Official description

Affected products (as reported)

References