Resource exhaustion in Conduit-Hyper Project
CVE-2022-39294
conduit-hyper integrates a conduit application with the hyper server. Prior to version 0.4.2, `conduit-hyper` did not check any limit on a request's length before calling [`hyper::body::to_bytes`](https://docs.rs/hyper/latest/hyper/body/fn.to_bytes.html). An attacker could send a malicious request with an abnormally large `Content-Length`, which could lead to a panic if memory allocation failed for that request. In version 0.4.2, `conduit-hyper` sets an internal limit of 128 MiB per request, otherwise returning status 400 ("Bad Request"). This crate is part of the implementation of Rust's [crates.io](https://crates.io/), but that service is not affected due to its existing cloud infrastructure, which already drops such malicious requests. Even with the new limit in place, `conduit-hyper` is not recommended for production use, nor to directly serve the public Internet.
Vulnerability class: DoS (Denial of Service)
Published · last modified .
CVSS v3 metric
CVSS v3 base score 7.5 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H.
EPSS exploit prediction
EPSS: 0.007 (52.6th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 53rd percentile — 52.6% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.007 · newest: 0.007 · change: 0.000
Affected products
- Conduit-Hyper Project — versions 0.2.0
- Conduit-Rust Conduit-Hyper — versions >= 0.2.0-alpha.3, < 0.4.2
Weakness classification (CWE)
References
- github.com/conduit-rust/conduit-hyper/security/advisories/GHSA-9398-5ghf-7pr6 (Third Party Advisory)
Frequently asked questions
- What is CVE-2022-39294?
- CVE-2022-39294 is a high-severity vulnerability in Conduit-Hyper Project, classified under Uncontrolled Resource Consumption. CVSS score: 7.5/10. Published 2022-10-31.
- How severe is CVE-2022-39294?
- High severity. CVSS v3 base score is 7.5 out of 10.