CVE-2021-43838

Published: Dic 17, 2021 Last Modified: Nov 21, 2024 EU-VD ID: EUVD-2021-2445 Aliases: GHSA-55xv-f85c-248q
ExploitDB:
Other exploit source:
Google Dorks:
MEDIUM 5,3
Source: [email protected]
Attack Vector: network
Attack Complexity: low
Privileges Required: none
User Interaction: none
Scope: unchanged
Confidentiality: none
Integrity: none
Availability: low
MEDIUM 5,0
Source: [email protected]
Access Vector: network
Access Complexity: low
Authentication: none
Confidentiality: none
Integrity: none
Availability: partial

Description

AI Translation Available

jsx-slack is a library for building JSON objects for Slack Block Kit surfaces from JSX. In versions prior to 4.5.1 users are vulnerable to a regular expression denial-of-service (ReDoS) attack. If attacker can put a lot of JSX elements into `<blockquote>` tag, an internal regular expression for escaping characters may consume an excessive amount of computing resources. jsx-slack v4.5.1 has patched to a regex for escaping blockquote characters. Users are advised to upgrade as soon as possible.

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
0,0033
Percentile
0,6th
Updated

EPSS Score Trend (Last 91 Days)

400

Uncontrolled Resource Consumption

Draft
Abstraction: Class Structure: Simple
Common Consequences
Security Scopes Affected:
Availability Access Control Other
Potential Impacts:
Dos: Crash, Exit, Or Restart Dos: Resource Consumption (Cpu) Dos: Resource Consumption (Memory) Dos: Resource Consumption (Other) Bypass Protection Mechanism Other
Applicable Platforms
All platforms may be affected
Likelihood of Exploit: High
View CWE Details
1333

Inefficient Regular Expression Complexity

Draft
Abstraction: Base Structure: Simple
Common Consequences
Security Scopes Affected:
Availability
Potential Impacts:
Dos: Resource Consumption (Cpu)
Applicable Platforms
All platforms may be affected
Likelihood of Exploit: High
View CWE Details
Application

Jsx-Slack by Jsx-Slack Project

Product Information
Vendor Jsx-Slack Project
Product Jsx-Slack
Version Range Affected
To 4.5.2 (exclusive)
cpe:2.3:a:jsx-slack_project:jsx-slack:*:*:*:*:*:node.js:*:*
Common Platform Enumeration - Standardized vulnerability identification
https://github.com/yhatt/jsx-slack/commit/36e4a10405e4c7745…
Patch Third Party Advisory
https://github.com/yhatt/jsx-slack/commit/36e4a10405e4c7745333e245fcc5029c02c70…
https://github.com/yhatt/jsx-slack/security/advisories/GHSA…
Exploit Patch Third Party Advisory
https://github.com/yhatt/jsx-slack/security/advisories/GHSA-55xv-f85c-248q
https://github.com/yhatt/jsx-slack/commit/36e4a10405e4c7745…
Patch Third Party Advisory
https://github.com/yhatt/jsx-slack/commit/36e4a10405e4c7745333e245fcc5029c02c70…
https://github.com/yhatt/jsx-slack/security/advisories/GHSA…
Exploit Patch Third Party Advisory
https://github.com/yhatt/jsx-slack/security/advisories/GHSA-55xv-f85c-248q