CVE-2021-29509: Puma's Keepalive Connections Causing Denial Of Service

CVE-2021-29509 · Severity: low · CVSS 3.1 · Published 2021-05-18

Puma's Keepalive Connections Causing Denial Of Service

Technologies: puma (RubyGems). Vendors: RubyGems.

Quick answers

Is CVE-2021-29509 exploited in the wild?
No. Junglewise Threat Intelligence has no report of CVE-2021-29509 being exploited in the wild.
How severe is CVE-2021-29509?
Low severity, with a CVSS score of 3.1, published 18 May 2021.
Which products and versions are affected?
puma (RubyGems) ECOSYSTEM:introduced=0,fixed=4.3.8.
Is there a fix for CVE-2021-29509?
Yes. puma (RubyGems): upgrade to 4.3.8 or later. Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.
Am I affected by CVE-2021-29509?
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 4.3.8 or later
    bundle update puma

Affected products

  • puma (RubyGems) ECOSYSTEM:introduced=0,fixed=4.3.8

Identifiers

  • CVE-2021-29509
  • GHSA-q28m-8xjw-8vr5

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