CVE-2020-5249: HTTP Response Splitting (Early Hints) in Puma

CVE-2020-5249 · Severity: low · CVSS 3.1 · Published 2020-03-03

HTTP Response Splitting (Early Hints) in Puma

Technologies: puma (RubyGems). Vendors: RubyGems.

Quick answers

Is CVE-2020-5249 exploited in the wild?
No. Junglewise Threat Intelligence has no report of CVE-2020-5249 being exploited in the wild.
How severe is CVE-2020-5249?
Low severity, with a CVSS score of 3.1, published 3 March 2020.
Which products and versions are affected?
puma (RubyGems) ECOSYSTEM:introduced=0,fixed=3.12.4.
Is there a fix for CVE-2020-5249?
Yes. puma (RubyGems): upgrade to 3.12.4 or later. Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.
Am I affected by CVE-2020-5249?
Check whether you run puma (RubyGems) 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

  • puma (RubyGems): upgrade to 3.12.4 or later
    bundle update puma

Affected products

  • puma (RubyGems) ECOSYSTEM:introduced=0,fixed=3.12.4

Identifiers

  • CVE-2020-5249
  • GHSA-33vf-4xgg-9r58

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