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  5. CVE-2019-8849

CVE-2019-8849: SwiftNIO SSL arbitrary code execution vulnerability

May 24, 2022 (updated August 4, 2025)

A SwiftNIO application using TLS may be able to execute arbitrary code. The issue was addressed by signaling that an executable stack is not required. This issue is fixed in SwiftNIO SSL 2.4.1.

References

  • github.com/advisories/GHSA-frg3-gpcx-968f
  • github.com/apple/swift-nio-ssl
  • github.com/apple/swift-nio-ssl/commit/109faef770994e71b6bafcc015e2e96b88a4af8c
  • github.com/apple/swift-nio-ssl/releases/tag/2.4.1
  • nvd.nist.gov/vuln/detail/CVE-2019-8849
  • security.snyk.io/vuln/SNYK-COCOAPODS-SWIFTNIOSSL-8492737
  • support.apple.com/HT210772

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Affected versions

All versions starting from 2.0.0 before 2.4.1

Fixed versions

  • 2.4.1

Solution

Upgrade to version 2.4.1 or above.

Impact 9.8 CRITICAL

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Learn more about CVSS

Source file

swift/github.com/apple/swift-nio-ssl/CVE-2019-8849.yml

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