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CRLF Injection in Nodejs ‘undici’ via host

Moderate severity GitHub Reviewed Published Feb 16, 2023 in nodejs/undici • Updated Feb 24, 2023

Package

npm undici (npm)

Affected versions

>= 2.0.0, < 5.19.1

Patched versions

5.19.1

Description

Impact

undici library does not protect host HTTP header from CRLF injection vulnerabilities.

Patches

This issue was patched in Undici v5.19.1.

Workarounds

Sanitize the headers.host string before passing to undici.

References

Reported at https://hackerone.com/reports/1820955.

Credits

Thank you to Zhipeng Zhang (@timon8) for reporting this vulnerability.

References

@mcollina mcollina published to nodejs/undici Feb 16, 2023
Published by the National Vulnerability Database Feb 16, 2023
Published to the GitHub Advisory Database Feb 16, 2023
Reviewed Feb 16, 2023
Last updated Feb 24, 2023

Severity

Moderate

CVSS overall score

This score calculates overall vulnerability severity from 0 to 10 and is based on the Common Vulnerability Scoring System (CVSS).
/ 10

CVSS v3 base metrics

Attack vector
Network
Attack complexity
Low
Privileges required
Low
User interaction
Required
Scope
Unchanged
Confidentiality
Low
Integrity
Low
Availability
None

CVSS v3 base metrics

Attack vector: More severe the more the remote (logically and physically) an attacker can be in order to exploit the vulnerability.
Attack complexity: More severe for the least complex attacks.
Privileges required: More severe if no privileges are required.
User interaction: More severe when no user interaction is required.
Scope: More severe when a scope change occurs, e.g. one vulnerable component impacts resources in components beyond its security scope.
Confidentiality: More severe when loss of data confidentiality is highest, measuring the level of data access available to an unauthorized user.
Integrity: More severe when loss of data integrity is the highest, measuring the consequence of data modification possible by an unauthorized user.
Availability: More severe when the loss of impacted component availability is highest.
CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:L/I:L/A:N

EPSS score

0.186%
(56th percentile)

Weaknesses

CVE ID

CVE-2023-23936

GHSA ID

GHSA-5r9g-qh6m-jxff

Source code

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