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As proposed in #240 and tracked in #414, this PR translates all advisories into the new "V3" advisory format, which is based on Markdown with leading TOML front matter. This format makes it easier to see rendered Markdown syntax descriptions, whether rendered by an IDE or GitHub. This should help with both crafting advisories initially as well as review, and ideally encourages more lengthy descriptions. Support for this format shipped in `cargo-audit` v0.12.0 on May 6th, 2020.
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[advisory]
id = "RUSTSEC-2020-0008"
package = "hyper"
categories = ["format-injection"]
date = "2020-03-19"
keywords = ["http", "request-smuggling"]
url = "https://github.com/hyperium/hyper/issues/1925"
[versions]
patched = [">= 0.12.34"]
unaffected = ["< 0.11.0"]
Flaw in hyper allows request smuggling by sending a body in GET requests
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.