HTTP Request Smuggling via llhttp Parser in Node.js v18.7.0
CVE-2022-35256 Published on December 5, 2022
The llhttp parser in the http module in Node v18.7.0 does not correctly handle header fields that are not terminated with CLRF. This may result in HTTP Request Smuggling.
Vulnerability Analysis
CVE-2022-35256 is exploitable with network access, and does not require authorization privileges or user interaction. This vulnerability is considered to have a low attack complexity. An automatable proof of concept (POC) exploit exists. The potential impact of an exploit of this vulnerability is considered to have a small impact on confidentiality and integrity, and no impact on availability.
Weakness Type
What is a HTTP Request Smuggling Vulnerability?
When malformed or abnormal HTTP requests are interpreted by one or more entities in the data flow between the user and the web server, such as a proxy or firewall, they can be interpreted inconsistently, allowing the attacker to "smuggle" a request to one device without the other device being aware of it.
CVE-2022-35256 has been classified to as a HTTP Request Smuggling vulnerability or weakness.
Products Associated with CVE-2022-35256
You can be notified by email with stack.watch whenever vulnerabilities like CVE-2022-35256 are published in these products:
Affected Versions
NodeJS Node:- Version 4.0 and below 4.* is affected.
- Version 5.0 and below 5.* is affected.
- Version 6.0 and below 6.* is affected.
- Version 7.0 and below 7.* is affected.
- Version 8.0 and below 8.* is affected.
- Version 9.0 and below 9.* is affected.
- Version 10.0 and below 10.* is affected.
- Version 11.0 and below 11.* is affected.
- Version 12.0 and below 12.* is affected.
- Version 13.0 and below 13.* is affected.
- Version 14.0 and below 14.20.1 is affected.
- Version 15.0 and below 15.* is affected.
- Version 16.0 and below 16.17.1 is affected.
- Version 17.0 and below 17.* is affected.
- Version 18.0 and below 18.9.1 is affected.
Exploit Probability
EPSS (Exploit Prediction Scoring System) scores estimate the probability that a vulnerability will be exploited in the wild within the next 30 days. The percentile shows you how this score compares to all other vulnerabilities.