// For flags

CVE-2020-15179

HTML Injection in ScratchSig

Severity Score

9.0
*CVSS v3.1

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

0
*Multiple Sources

Exploited in Wild

-
*KEV

Decision

-
*SSVC
Descriptions

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.

La extensión ScratchSig para MediaWiki versiones anteriores a 1.0.1, permite un ataque de tipo Cross-Site Scripting almacenado.&#xa0;Usando la etiqueta (script) dentro de la etiqueta (scratchsig), los atacantes con permiso de edición pueden ejecutar scripts en el navegador de los visitantes.&#xa0;Con MediaWiki JavaScript API, esto puede conllevar potencialmente a una escalada de privilegios y/o la toma de control de la cuenta.&#xa0;Esto ha sido parcheado en la versión 1.0.1.&#xa0;Esto ya ha sido implementado en todas las Scratch Wikis.&#xa0;No existen soluciones alternativas que no sean deshabilitar la extensión por completo

*Credits: N/A
CVSS Scores
Attack Vector
Network
Attack Complexity
Low
Privileges Required
Low
User Interaction
Required
Scope
Changed
Confidentiality
High
Integrity
High
Availability
High
Attack Vector
Network
Attack Complexity
High
Privileges Required
Low
User Interaction
Required
Scope
Changed
Confidentiality
High
Integrity
High
Availability
High
Attack Vector
Network
Attack Complexity
High
Authentication
Single
Confidentiality
Partial
Integrity
Partial
Availability
Partial
* Common Vulnerability Scoring System
SSVC
  • Decision:-
Exploitation
-
Automatable
-
Tech. Impact
-
* Organization's Worst-case Scenario
Timeline
  • 2020-06-25 CVE Reserved
  • 2020-09-15 CVE Published
  • 2023-03-07 EPSS Updated
  • 2024-08-04 CVE Updated
  • ---------- Exploited in Wild
  • ---------- KEV Due Date
  • ---------- First Exploit
CWE
  • CWE-79: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
CAPEC
Affected Vendors, Products, and Versions
Vendor Product Version Other Status
Vendor Product Version Other Status <-- --> Vendor Product Version Other Status
Scratch-wiki
Search vendor "Scratch-wiki"
 Scratchsig
Search vendor "Scratch-wiki" for product "Scratchsig"
 < 1.0.1
Search vendor "Scratch-wiki" for product "Scratchsig" and version " < 1.0.1"
mediawiki
Affected