CVE-2021-43838

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.

CVSS v3 5.3 MEDIUM
CVSS v2.0 5.0 MEDIUM

5.3^/10

CVSS v3 : MEDIUM

Vector :

Exploitability : 3.9 / Impact : 1.4

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required NONE

User Interaction NONE

Confidentiality Impact NONE

Integrity Impact NONE

Availability Impact LOW

Scope UNCHANGED

5.0^/10

CVSS v2.0 : MEDIUM

Vector : AV:N/AC:L/Au:N/C:N/I:N/A:P

Exploitability : 10.0 / Impact : 2.9

Access Vector NETWORK

Access Complexity LOW

Authentication NONE

Confidentiality Impact NONE

Integrity Impact NONE

Availability Impact PARTIAL

References

Link	Resource
https://github.com/yhatt/jsx-slack/commit/36e4a10405e4c7745333e245fcc5029c02c7065d	Patch Third Party Advisory
https://github.com/yhatt/jsx-slack/security/advisories/GHSA-55xv-f85c-248q	Exploit Patch Third Party Advisory
https://github.com/yhatt/jsx-slack/commit/36e4a10405e4c7745333e245fcc5029c02c7065d	Patch Third Party Advisory
https://github.com/yhatt/jsx-slack/security/advisories/GHSA-55xv-f85c-248q	Exploit Patch Third Party Advisory

Configurations

Configuration 1 (hide)

cpe:2.3:a:jsx-slack_project:jsx-slack:*:*:*:*:*:node.js:*:*

History

No history.

Information

Published : 2021-12-17 19:15

Updated : 2024-11-21 06:29

NVD link : CVE-2021-43838

Mitre link : CVE-2021-43838

CVE.ORG link : CVE-2021-43838

JSON object : View

Products Affected

jsx-slack_project

jsx-slack

CWE

CWE-400

Uncontrolled Resource Consumption

CWE-1333

Inefficient Regular Expression Complexity

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