CVE-2021-32715

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Source

https://nvd.nist.gov/vuln/detail/CVE-2021-32715

Import Source

https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2021-32715.json

JSON Data

https://api.osv.dev/v1/vulns/CVE-2021-32715

Aliases

Related

Published

2021-07-07T20:15:08Z

Modified

2024-09-18T01:00:21Z

Severity

5.3 (Medium) CVSS_V3 - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N CVSS Calculator

Summary

[none]

Details

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

Affected packages

Debian:12 / rust-hyper

Package

Name: rust-hyper
Purl: pkg:deb/debian/rust-hyper?arch=source

Affected ranges

Type: ECOSYSTEM
Events: Introduced

0Unknown introduced version / All previous versions are affected

Fixed

0.14.19-1

Ecosystem specific

{
    "urgency": "not yet assigned"
}

Debian:13 / rust-hyper

Package

Name: rust-hyper
Purl: pkg:deb/debian/rust-hyper?arch=source

Affected ranges

Type: ECOSYSTEM
Events: Introduced

0Unknown introduced version / All previous versions are affected

Fixed

0.14.19-1

Ecosystem specific

{
    "urgency": "not yet assigned"
}