CVE-2021-32714
hyper is an HTTP library for Rust. In versions prior to 0.14.10, hyper ...
Severity by source
Trivy's own label is CRITICAL. Rated critical by NVD, Azure Linux. Rated lower by GHSA (medium), Ubuntu (medium).
Description
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.
Affected packages and fixed versions
| Source | Package | Fixed in |
|---|---|---|
| Azure Linux 3.0 | rpm-ostree | 0:2024.4-1.azl3 |
| cargo::GitHub Security Advisory Rust | hyper | 0.14.10 |
| chainguard | chaos-tproxy | 0.5.4-r2 |
| debian 12 | rust-hyper | 0.14.19-1 |
| debian 13 | rust-hyper | 0.14.19-1 |
| debian 14 | rust-hyper | 0.14.19-1 |
| echo | rust-hyper | 0.14.19-1 |
| ubuntu 20.04-ESM | rust-hyper | no fix listed |