GitHub Advisoryadvisory · crates.io
GHSA-h3qr-rq2j-74w4 HTTP Request Smuggling in hyper
CRITICAL
Official page ↗
- Aliases
- CVE-2020-35863
- Ecosystem
- crates.io
- Packages
- hyper
- Severity
- Critical
- CVSS vector
- CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
- Weaknesses
- CWE-444
- Reviewed
- 2021-08-19
Affected packages
• crates.io hyper: >= 0.11.0, < 0.12.34 → fixed in 0.12.34
Description
Vulnerable versions of hyper allow GET requests to have bodies, even if there is no Transfer-Encoding or Content-Length header. As per the HTTP 1.1 specification, such requests do not have bodies, so the body will be interpreted as a separate HTTP request.
This allows an attacker who can control the body and method of an HTTP request made by hyper to inject a request with headers that would not otherwise be allowed, as demonstrated by sending a malformed HTTP request from a Substrate runtime. This allows bypassing CORS restrictions. In combination with other vulnerabilities, such as an exploitable web server listening on loopback, it may allow remote code execution.
The flaw was corrected in hyper version 0.12.34.
Related
Alias · CVE (1)
- CVE-2020-35863 An issue was discovered in the hyper crate before 0.12.34 for Rust. vulnerability
Weakness · CWE (1)
- CWE-444 Inconsistent Interpretation of HTTP Requests weakness