hyper is an HTTP library for rust. hyper's HTTP/1 server code had a flaw that incorrectly parses and accepts requests with a `Content-Length` header with a prefixed plus sign, when it should have been rejected as illegal. This combined with an upstream HTTP proxy that doesn't parse such `Content-Length` headers, but forwards them, can result in "request smuggling" or "desync attacks". The flaw exists in all prior versions of hyper prior to 0.14.10, if built with `rustc` v1.5.0 or newer. The vulnerability is patched in hyper version 0.14.10. Two workarounds exist: One may reject requests manually that contain a plus sign prefix in the `Content-Length` header or ensure any upstream proxy handles `Content-Length` headers with a plus sign prefix.
References
Link | Resource |
---|---|
https://github.com/hyperium/hyper/security/advisories/GHSA-f3pg-qwvg-p99c | Exploit Third Party Advisory |
https://github.com/rust-lang/rust/pull/28826/commits/123a83326fb95366e94a3be1a74775df4db97739 | Patch Third Party Advisory |
History
No history.
MITRE Information
Status: PUBLISHED
Assigner: GitHub_M
Published: 2021-07-07T20:05:11
Updated: 2021-07-07T20:05:11
Reserved: 2021-05-12T00:00:00
Link: CVE-2021-32715
JSON object: View
NVD Information
Status : Analyzed
Published: 2021-07-07T20:15:08.750
Modified: 2021-07-22T12:49:47.863
Link: CVE-2021-32715
JSON object: View
Redhat Information
No data.
CWE