CVE-2021-21299: RUSTSEC-2021-0020 - Multiple Transfer-Encoding headers misinterprets request payload

CVE-2021-21299 · Severity: low · CVSS 3.1 · Published 2021-02-05

Multiple Transfer-Encoding headers misinterprets request payload

Technologies: hyper (crates.io). Vendors: crates.io.

Quick answers

Is CVE-2021-21299 exploited in the wild?
No. Junglewise Threat Intelligence has no report of CVE-2021-21299 being exploited in the wild.
How severe is CVE-2021-21299?
Low severity, with a CVSS score of 3.1, published 5 February 2021.
Which products and versions are affected?
hyper (crates.io) SEMVER:introduced=0.12.0,fixed=0.12.36,introduced=0.13.0-0,fixed=0.13.10,introduced=0.14.0-0,fixed=0.14.3, SEMVER:introduced=0.14.0,fixed=0.14.3.
Is there a fix for CVE-2021-21299?
Yes. hyper (crates.io): upgrade to 0.14.3 or later. Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.
Am I affected by CVE-2021-21299?
Check whether you run hyper (crates.io) at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

How to fix

  • hyper (crates.io): upgrade to 0.14.3 or later
    cargo update -p hyper

Affected products

  • hyper (crates.io) SEMVER:introduced=0.12.0,fixed=0.12.36,introduced=0.13.0-0,fixed=0.13.10,introduced=0.14.0-0,fixed=0.14.3, SEMVER:introduced=0.14.0,fixed=0.14.3

Identifiers

  • CVE-2021-21299
  • GHSA-6hfq-h8hq-87mf
  • RUSTSEC-2021-0020

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