CVE-2024-27982
Description
An HTTP Request Smuggling vulnerability was found in Node.js due to Content-Length Obfuscation in the HTTP server. Malformed headers, particularly if a space is inserted before a content-length header, can result in HTTP request smuggling. This flaw allows attackers to inject a second request within the body of the first and poison web caches, bypass web application firewalls, and execute Cross-site scripting (XSS) attacks.
Statement
The HTTP request smuggling vulnerability in Node.js, stemming from Content-Length header obfuscation, is categorized as moderate severity due to its potential impact on the security and integrity of web applications. While the vulnerability can allow for the smuggling of secondary HTTP requests, leading to potential bypassing of security controls and injection of malicious content, its exploitation requires specific conditions and configurations to be met. Successful exploitation relies on the server's handling of malformed headers and the presence of web caching mechanisms susceptible to poisoning. Though the risk is notable and could facilitate attacks like XSS and cache poisoning, its moderate severity status suggests that while it warrants attention and mitigation, it might not pose an immediate, widespread threat under all circumstances.
Mitigation
Mitigation for this issue is either not available or the currently available options don't meet the Red Hat Product Security criteria comprising ease of use and deployment, applicability to widespread installation base or stability.
Common Vulnerability Scoring System (CVSS) Score Details
Info alert:Important note
CVSS scores for open source components depend on vendor-specific factors (e.g. version or build chain). Therefore, Red Hat's score and impact rating can be different from NVD and other vendors. Red Hat remains the authoritative CVE Naming Authority (CNA) source for its products and services (see Red Hat classifications).
CVSS v3 Score Breakdown
| Red Hat | NVD | cve.org | |
|---|---|---|---|
| Base Score | 6.1 | N/A | 6.5 |
| Attack Vector | Network | N/A | Network |
| Attack Complexity | Low | N/A | Low |
| Privileges Required | None | N/A | None |
| User Interaction | Required | N/A | None |
| Scope | Changed | N/A | Unchanged |
| Confidentiality | Low | N/A | None |
| Integrity Impact | Low | N/A | Low |
| Availability Impact | None | N/A | Low |
Vector
Red Hat: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
cve.org: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:L
Understanding the Weakness (CWE)
Integrity,Non-Repudiation,Access Control
Technical Impact: Unexpected State; Hide Activities; Bypass Protection Mechanism
An attacker could create HTTP messages to exploit a number of weaknesses including 1) the message can trick the web server to associate a URL with another URL's webpage and caching the contents of the webpage (web cache poisoning attack), 2) the message can be structured to bypass the firewall protection mechanisms and gain unauthorized access to a web application, and 3) the message can invoke a script or a page that returns client credentials (similar to a Cross Site Scripting attack).
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