MSRC_CVE-2021-44531

Vulnerability from csaf_microsoft - Published: 2022-02-02 00:00 - Updated: 2022-03-08 00:00
Summary
Accepting arbitrary Subject Alternative Name (SAN) types unless a PKI is specifically defined to use a particular SAN type can result in bypassing name-constrained intermediates. Node.js < 12.22.9 < 14.18.3 < 16.13.2 and < 17.3.1 was accepting URI SAN types which PKIs are often not defined to use. Additionally when a protocol allows URI SANs Node.js did not match the URI correctly.Versions of Node.js with the fix for this disable the URI SAN type when checking a certificate against a hostname. This behavior can be reverted through the --security-revert command-line option.

Notes

Additional Resources
To determine the support lifecycle for your software, see the Microsoft Support Lifecycle: https://support.microsoft.com/lifecycle
Disclaimer
The information provided in the Microsoft Knowledge Base is provided \"as is\" without warranty of any kind. Microsoft disclaims all warranties, either express or implied, including the warranties of merchantability and fitness for a particular purpose. In no event shall Microsoft Corporation or its suppliers be liable for any damages whatsoever including direct, indirect, incidental, consequential, loss of business profits or special damages, even if Microsoft Corporation or its suppliers have been advised of the possibility of such damages. Some states do not allow the exclusion or limitation of liability for consequential or incidental damages so the foregoing limitation may not apply.
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        "title": "Additional Resources"
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        "text": "The information provided in the Microsoft Knowledge Base is provided \\\"as is\\\" without warranty of any kind. Microsoft disclaims all warranties, either express or implied, including the warranties of merchantability and fitness for a particular purpose. In no event shall Microsoft Corporation or its suppliers be liable for any damages whatsoever including direct, indirect, incidental, consequential, loss of business profits or special damages, even if Microsoft Corporation or its suppliers have been advised of the possibility of such damages. Some states do not allow the exclusion or limitation of liability for consequential or incidental damages so the foregoing limitation may not apply.",
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        "category": "self",
        "summary": "CVE-2021-44531 Accepting arbitrary Subject Alternative Name (SAN) types unless a PKI is specifically defined to use a particular SAN type can result in bypassing name-constrained intermediates. Node.js \u003c 12.22.9 \u003c 14.18.3 \u003c 16.13.2 and \u003c 17.3.1 was accepting URI SAN types which PKIs are often not defined to use. Additionally when a protocol allows URI SANs Node.js did not match the URI correctly.Versions of Node.js with the fix for this disable the URI SAN type when checking a certificate against a hostname. This behavior can be reverted through the --security-revert command-line option. - VEX",
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    "title": "Accepting arbitrary Subject Alternative Name (SAN) types unless a PKI is specifically defined to use a particular SAN type can result in bypassing name-constrained intermediates. Node.js \u003c 12.22.9 \u003c 14.18.3 \u003c 16.13.2 and \u003c 17.3.1 was accepting URI SAN types which PKIs are often not defined to use. Additionally when a protocol allows URI SANs Node.js did not match the URI correctly.Versions of Node.js with the fix for this disable the URI SAN type when checking a certificate against a hostname. This behavior can be reverted through the --security-revert command-line option.",
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        "name": "Improper Certificate Validation"
      },
      "notes": [
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          "summary": "CVE-2021-44531 Accepting arbitrary Subject Alternative Name (SAN) types unless a PKI is specifically defined to use a particular SAN type can result in bypassing name-constrained intermediates. Node.js \u003c 12.22.9 \u003c 14.18.3 \u003c 16.13.2 and \u003c 17.3.1 was accepting URI SAN types which PKIs are often not defined to use. Additionally when a protocol allows URI SANs Node.js did not match the URI correctly.Versions of Node.js with the fix for this disable the URI SAN type when checking a certificate against a hostname. This behavior can be reverted through the --security-revert command-line option. - VEX",
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            "version": "3.1"
          },
          "products": [
            "16820-2",
            "17086-1"
          ]
        }
      ],
      "title": "Accepting arbitrary Subject Alternative Name (SAN) types unless a PKI is specifically defined to use a particular SAN type can result in bypassing name-constrained intermediates. Node.js \u003c 12.22.9 \u003c 14.18.3 \u003c 16.13.2 and \u003c 17.3.1 was accepting URI SAN types which PKIs are often not defined to use. Additionally when a protocol allows URI SANs Node.js did not match the URI correctly.Versions of Node.js with the fix for this disable the URI SAN type when checking a certificate against a hostname. This behavior can be reverted through the --security-revert command-line option."
    }
  ]
}


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  • Confirmed: The vulnerability has been validated from an analyst's perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
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