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

Quick assessment

Affected
InternationalScratchWiki mediawiki-scratch-login
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

MediaWiki是美国维基媒体（MediaWiki）基金会的一套自由免费的基于网络的Wiki引擎。该产品可用于部署内部的知识管理和内容管理系统。 MediaWiki Scratch Login 1.1之前版本存在注入漏洞，该漏洞源于对用户名没有进行规范要求使用导致安全问题。

CVSS 10.0 · Critical EPSS 1.17% · P65

Possible ATT&CK Techniques 1 AI

T1078 · Valid Accounts
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I. Basic Information for CVE-2020-15164

Vulnerability Information
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Vulnerability Title
Authentication Bypass in Scratch Login (mediawiki-scratch-login)
Source: CVE Program / CVE List V5
Vulnerability 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.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:N
Source: CVE Program / CVE List V5
Vulnerability Type
认证机制不恰当
Source: CVE Program / CVE List V5
Vulnerability Title
MediaWiki 注入漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
MediaWiki是美国维基媒体（MediaWiki）基金会的一套自由免费的基于网络的Wiki引擎。该产品可用于部署内部的知识管理和内容管理系统。 MediaWiki Scratch Login 1.1之前版本存在注入漏洞，该漏洞源于对用户名没有进行规范要求使用导致安全问题。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
InternationalScratchWiki mediawiki-scratch-login < 1.1 -

II. Public POCs for CVE-2020-15164

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III. Intelligence Information for CVE-2020-15164

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Patches & Fixes for CVE-2020-15164 (1)

Vendor Advisories for CVE-2020-15164 (1)

IV. Related Vulnerabilities

Same vendor: InternationalScratchWiki
Same weakness: CWE-287

V. Comments for CVE-2020-15164

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