CVE-2021-43842

Published: Dic 20, 2021 Last Modified: Nov 21, 2024 EU-VD ID: EUVD-2021-30714 Aliases: GSD-2021-43842
ExploitDB:
Other exploit source:
Google Dorks:
MEDIUM 5,4
Source: [email protected]
Attack Vector: network
Attack Complexity: low
Privileges Required: low
User Interaction: required
Scope: changed
Confidentiality: low
Integrity: low
Availability: none
LOW 3,5
Source: [email protected]
Access Vector: network
Access Complexity: medium
Authentication: single
Confidentiality: none
Integrity: partial
Availability: none

Description

AI Translation Available

Wiki.js is a wiki app built on Node.js. Wiki.js versions 2.5.257 and earlier are vulnerable to stored cross-site scripting through a SVG file upload. By creating a crafted SVG file, a malicious Wiki.js user may stage a stored cross-site scripting attack. This allows the attacker to execute malicious JavaScript when the SVG is viewed directly by other users. Scripts do not execute when loaded inside a page via normal `<img>` tags. Commit 5d3e81496fba1f0fbd64eeb855f30f69a9040718 fixes this vulnerability by adding an optional (enabled by default) SVG sanitization step to all file uploads that match the SVG mime type. As a workaround, disable file upload for all non-trusted users. Wiki.js version 2.5.260 is the first production version to contain a patch. Version 2.5.258 is the first development build to contain a patch and is available only as a Docker image as requarks/wiki:canary-2.5.258.

EPSS (Exploit Prediction Scoring System)

Trend Analysis

EPSS (Exploit Prediction Scoring System)

Prevede la probabilità di sfruttamento basata su intelligence sulle minacce e sulle caratteristiche della vulnerabilità.

EPSS Score
0,0026
Percentile
0,5th
Updated

EPSS Score Trend (Last 90 Days)

79

Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')

Stable
Abstraction: Base Structure: Simple
Common Consequences
Security Scopes Affected:
Access Control Confidentiality Integrity Availability
Potential Impacts:
Bypass Protection Mechanism Read Application Data Execute Unauthorized Code Or Commands
Applicable Platforms
Technologies: AI/ML, Web Based, Web Server
Likelihood of Exploit: High
View CWE Details
Application

Wiki.Js by Requarks

Product Information
Vendor Requarks
Product Wiki.Js
Version Range Affected
To 2.5.257 (inclusive)
cpe:2.3:a:requarks:wiki.js:*:*:*:*:*:*:*:*
Common Platform Enumeration - Standardized vulnerability identification
https://github.com/Requarks/wiki/commit/5d3e81496fba1f0fbd6…
Patch Third Party Advisory
https://github.com/Requarks/wiki/commit/5d3e81496fba1f0fbd64eeb855f30f69a9040718
https://github.com/Requarks/wiki/releases/tag/2.5.260
Release Notes Third Party Advisory
https://github.com/Requarks/wiki/releases/tag/2.5.260
https://github.com/Requarks/wiki/security/advisories/GHSA-3…
Patch Third Party Advisory
https://github.com/Requarks/wiki/security/advisories/GHSA-3qv4-gp35-rgh7
https://github.com/Requarks/wiki/commit/5d3e81496fba1f0fbd6…
Patch Third Party Advisory
https://github.com/Requarks/wiki/commit/5d3e81496fba1f0fbd64eeb855f30f69a9040718
https://github.com/Requarks/wiki/releases/tag/2.5.260
Release Notes Third Party Advisory
https://github.com/Requarks/wiki/releases/tag/2.5.260
https://github.com/Requarks/wiki/security/advisories/GHSA-3…
Patch Third Party Advisory
https://github.com/Requarks/wiki/security/advisories/GHSA-3qv4-gp35-rgh7