VDB
CVE-2021-32714
CVE-2021-32714
PUBLISHED
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.
EPSS 0.40% · 60.9th percentile
Risk Scores
EPSS Score
0.40%
60.9th percentile
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Ubuntu:20.04:LTS | rust-hyper | 0, 0.12.35-1 |
Timeline
- Jul 7, 2021 CVE Published
- Jul 8, 2021 EPSS Score
- Jul 8, 2021 PoC Published
- Sep 6, 2021 EPSS Score
- Nov 5, 2021 EPSS Score
- Jan 3, 2022 EPSS Score
- Feb 4, 2022 EPSS Score
- Mar 4, 2022 EPSS Score
- Apr 1, 2022 EPSS Score
- May 3, 2022 EPSS Score
- Jul 2, 2022 EPSS Score
- Sep 1, 2022 EPSS Score
References
- https://ubuntu.com/security/CVE-2021-32714 third-party-advisory
- https://github.com/hyperium/hyper/security/advisories/GHSA-5h46-h7hh-c6x9 third-party-advisory
- https://rustsec.org/advisories/RUSTSEC-2021-0079.html third-party-advisory
- https://www.cve.org/CVERecord?id=CVE-2021-32714 third-party-advisory