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llhttp allows HTTP Request Smuggling via Improper Delimiting of Header Fields

Critical severity GitHub Reviewed Published Jul 15, 2022 to the GitHub Advisory Database • Updated Jul 11, 2023

Package

npm llhttp (npm)

Affected versions

< 6.0.7

Patched versions

6.0.7

Description

The llhttp parser in the http module in Node.js does not strictly use the CRLF sequence to delimit HTTP requests. The LF character (without CR) is sufficient to delimit HTTP header fields in the lihttp parser. According to RFC7230 section 3, only the CRLF sequence should delimit each header-field. This can lead to HTTP Request Smuggling (HRS).

References

Published by the National Vulnerability Database Jul 14, 2022
Published to the GitHub Advisory Database Jul 15, 2022
Reviewed Jul 11, 2023
Last updated Jul 11, 2023

Severity

Critical
9.1
/ 10

CVSS base metrics

Attack vector
Network
Attack complexity
Low
Privileges required
None
User interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
None
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N

Weaknesses

CVE ID

CVE-2022-32214

GHSA ID

GHSA-q5vx-44v4-gch4

Source code

No known source code
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