hyper is an HTTP library for Rust. In versions prior to 0.14.10, hyper's HTTP server and client code had a flaw that could trigger an integer overflow when decoding chunk sizes that are too big. This allows possible data loss, or if combined with an upstream HTTP proxy that allows chunk sizes larger than hyper does, can result in "request smuggling" or "desync attacks." The vulnerability is patched in version 0.14.10. Two possible workarounds exist. One may reject requests manually that contain a `Transfer-Encoding` header or ensure any upstream proxy rejects `Transfer-Encoding` chunk sizes greater than what fits in 64-bit unsigned integers.
References
Link | Resource |
---|---|
https://github.com/hyperium/hyper/security/advisories/GHSA-5h46-h7hh-c6x9 | Exploit Third Party Advisory |
History
No history.
MITRE Information
Status: PUBLISHED
Assigner: GitHub_M
Published: 2021-07-07T19:35:10
Updated: 2021-07-07T19:35:10
Reserved: 2021-05-12T00:00:00
Link: CVE-2021-32714
JSON object: View
NVD Information
Status : Analyzed
Published: 2021-07-07T20:15:08.650
Modified: 2021-07-22T12:40:27.330
Link: CVE-2021-32714
JSON object: View
Redhat Information
No data.
CWE