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CVE

CWE

Training

CVE-2021-32723

Published: Jun 28, 2021

Modified: Aug 3, 2024

PUBLISHED

CVSS v3.1

7.4

HIGH

Description

Prism is a syntax highlighting library. Some languages before 1.24.0 are vulnerable to Regular Expression Denial of Service (ReDoS). When Prism is used to highlight untrusted (user-given) text, an attacker can craft a string that will take a very very long time to highlight. This problem has been fixed in Prism v1.24. As a workaround, do not use ASCIIDoc or ERB to highlight untrusted text. Other languages are not affected and can be used to highlight untrusted text.

Vendor	Product	Versions
PrismJS	prism	affected `< 1.24`

Weaknesses (CWE)

CVSS v3.1 Details

CVSS v3.1 Vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:N/I:N/A:H

Attack Vector

Network

Attack Complexity

Low

Privileges Required

None

User Interaction

Required

Scope

Changed

Confidentiality

None

Integrity

None

Availability

High

References

https://github.com/PrismJS/prism/security/advisories/GHSA-gj77-59wh-66hg

x_refsource_CONFIRM

https://github.com/PrismJS/prism/pull/2688

x_refsource_MISC

https://github.com/PrismJS/prism/pull/2774

x_refsource_MISC

https://www.oracle.com/security-alerts/cpujan2022.html

x_refsource_MISC

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