msrc_cve-2024-21892
Vulnerability from csaf_microsoft
Published
2024-02-02 08:00
Modified
2025-02-13 00:00
Summary
On Linux Node.js ignores certain environment variables if those may have been set by an unprivileged user while the process is running with elevated privileges with the only exception of CAP_NET_BIND_SERVICE. Due to a bug in the implementation of this exception Node.js incorrectly applies this exception even when certain other capabilities have been set. This allows unprivileged users to inject code that inherits the process's elevated privileges.

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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{
  "document": {
    "category": "csaf_vex",
    "csaf_version": "2.0",
    "distribution": {
      "text": "Public",
      "tlp": {
        "label": "WHITE",
        "url": "https://www.first.org/tlp/"
      }
    },
    "lang": "en-US",
    "notes": [
      {
        "category": "general",
        "text": "To determine the support lifecycle for your software, see the Microsoft Support Lifecycle: https://support.microsoft.com/lifecycle",
        "title": "Additional Resources"
      },
      {
        "category": "legal_disclaimer",
        "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.",
        "title": "Disclaimer"
      }
    ],
    "publisher": {
      "category": "vendor",
      "contact_details": "secure@microsoft.com",
      "name": "Microsoft Security Response Center",
      "namespace": "https://msrc.microsoft.com"
    },
    "references": [
      {
        "category": "self",
        "summary": "CVE-2024-21892 On Linux Node.js ignores certain environment variables if those may have been set by an unprivileged user while the process is running with elevated privileges with the only exception of CAP_NET_BIND_SERVICE.\nDue to a bug in the implementation of this exception Node.js incorrectly applies this exception even when certain other capabilities have been set.\nThis allows unprivileged users to inject code that inherits the process\u0027s elevated privileges. - VEX",
        "url": "https://msrc.microsoft.com/csaf/vex/2024/msrc_cve-2024-21892.json"
      },
      {
        "category": "external",
        "summary": "Microsoft Support Lifecycle",
        "url": "https://support.microsoft.com/lifecycle"
      },
      {
        "category": "external",
        "summary": "Common Vulnerability Scoring System",
        "url": "https://www.first.org/cvss"
      }
    ],
    "title": "On Linux Node.js ignores certain environment variables if those may have been set by an unprivileged user while the process is running with elevated privileges with the only exception of CAP_NET_BIND_SERVICE.\nDue to a bug in the implementation of this exception Node.js incorrectly applies this exception even when certain other capabilities have been set.\nThis allows unprivileged users to inject code that inherits the process\u0027s elevated privileges.",
    "tracking": {
      "current_release_date": "2025-02-13T00:00:00.000Z",
      "generator": {
        "date": "2025-10-20T01:03:24.898Z",
        "engine": {
          "name": "MSRC Generator",
          "version": "1.0"
        }
      },
      "id": "msrc_CVE-2024-21892",
      "initial_release_date": "2024-02-02T08:00:00.000Z",
      "revision_history": [
        {
          "date": "2024-02-26T00:00:00.000Z",
          "legacy_version": "1",
          "number": "1",
          "summary": "Information published."
        },
        {
          "date": "2024-06-30T07:00:00.000Z",
          "legacy_version": "1.1",
          "number": "2",
          "summary": "Information published."
        },
        {
          "date": "2025-02-13T00:00:00.000Z",
          "legacy_version": "1.2",
          "number": "3",
          "summary": "Added nodejs18 to CBL-Mariner 2.0\nAdded nodejs to Azure Linux 3.0"
        }
      ],
      "status": "final",
      "version": "3"
    }
  },
  "product_tree": {
    "branches": [
      {
        "branches": [
          {
            "branches": [
              {
                "category": "product_version",
                "name": "2.0",
                "product": {
                  "name": "CBL Mariner 2.0",
                  "product_id": "17086"
                }
              },
              {
                "category": "product_version",
                "name": "3.0",
                "product": {
                  "name": "Azure Linux 3.0",
                  "product_id": "17084"
                }
              }
            ],
            "category": "product_name",
            "name": "Azure Linux"
          },
          {
            "branches": [
              {
                "category": "product_version_range",
                "name": "\u003ccbl2 nodejs18 18.20.2-1",
                "product": {
                  "name": "\u003ccbl2 nodejs18 18.20.2-1",
                  "product_id": "3"
                }
              },
              {
                "category": "product_version",
                "name": "cbl2 nodejs18 18.20.2-1",
                "product": {
                  "name": "cbl2 nodejs18 18.20.2-1",
                  "product_id": "17347"
                }
              },
              {
                "category": "product_version_range",
                "name": "\u003ccbl2 nodejs18 18.18.2-7",
                "product": {
                  "name": "\u003ccbl2 nodejs18 18.18.2-7",
                  "product_id": "1"
                }
              },
              {
                "category": "product_version",
                "name": "cbl2 nodejs18 18.18.2-7",
                "product": {
                  "name": "cbl2 nodejs18 18.18.2-7",
                  "product_id": "19748"
                }
              }
            ],
            "category": "product_name",
            "name": "nodejs18"
          },
          {
            "branches": [
              {
                "category": "product_version_range",
                "name": "\u003cazl3 nodejs 20.14.0-1",
                "product": {
                  "name": "\u003cazl3 nodejs 20.14.0-1",
                  "product_id": "4"
                }
              },
              {
                "category": "product_version",
                "name": "azl3 nodejs 20.14.0-1",
                "product": {
                  "name": "azl3 nodejs 20.14.0-1",
                  "product_id": "16990"
                }
              },
              {
                "category": "product_version_range",
                "name": "\u003cazl3 nodejs 20.10.0-2",
                "product": {
                  "name": "\u003cazl3 nodejs 20.10.0-2",
                  "product_id": "2"
                }
              },
              {
                "category": "product_version",
                "name": "azl3 nodejs 20.10.0-2",
                "product": {
                  "name": "azl3 nodejs 20.10.0-2",
                  "product_id": "19740"
                }
              }
            ],
            "category": "product_name",
            "name": "nodejs"
          }
        ],
        "category": "vendor",
        "name": "Microsoft"
      }
    ],
    "relationships": [
      {
        "category": "default_component_of",
        "full_product_name": {
          "name": "\u003ccbl2 nodejs18 18.20.2-1 as a component of CBL Mariner 2.0",
          "product_id": "17086-3"
        },
        "product_reference": "3",
        "relates_to_product_reference": "17086"
      },
      {
        "category": "default_component_of",
        "full_product_name": {
          "name": "cbl2 nodejs18 18.20.2-1 as a component of CBL Mariner 2.0",
          "product_id": "17347-17086"
        },
        "product_reference": "17347",
        "relates_to_product_reference": "17086"
      },
      {
        "category": "default_component_of",
        "full_product_name": {
          "name": "\u003cazl3 nodejs 20.14.0-1 as a component of Azure Linux 3.0",
          "product_id": "17084-4"
        },
        "product_reference": "4",
        "relates_to_product_reference": "17084"
      },
      {
        "category": "default_component_of",
        "full_product_name": {
          "name": "azl3 nodejs 20.14.0-1 as a component of Azure Linux 3.0",
          "product_id": "16990-17084"
        },
        "product_reference": "16990",
        "relates_to_product_reference": "17084"
      },
      {
        "category": "default_component_of",
        "full_product_name": {
          "name": "\u003ccbl2 nodejs18 18.18.2-7 as a component of CBL Mariner 2.0",
          "product_id": "17086-1"
        },
        "product_reference": "1",
        "relates_to_product_reference": "17086"
      },
      {
        "category": "default_component_of",
        "full_product_name": {
          "name": "cbl2 nodejs18 18.18.2-7 as a component of CBL Mariner 2.0",
          "product_id": "19748-17086"
        },
        "product_reference": "19748",
        "relates_to_product_reference": "17086"
      },
      {
        "category": "default_component_of",
        "full_product_name": {
          "name": "\u003cazl3 nodejs 20.10.0-2 as a component of Azure Linux 3.0",
          "product_id": "17084-2"
        },
        "product_reference": "2",
        "relates_to_product_reference": "17084"
      },
      {
        "category": "default_component_of",
        "full_product_name": {
          "name": "azl3 nodejs 20.10.0-2 as a component of Azure Linux 3.0",
          "product_id": "19740-17084"
        },
        "product_reference": "19740",
        "relates_to_product_reference": "17084"
      }
    ]
  },
  "vulnerabilities": [
    {
      "cve": "CVE-2024-21892",
      "cwe": {
        "id": "CWE-94",
        "name": "Improper Control of Generation of Code (\u0027Code Injection\u0027)"
      },
      "notes": [
        {
          "category": "general",
          "text": "hackerone",
          "title": "Assigning CNA"
        }
      ],
      "product_status": {
        "fixed": [
          "17347-17086",
          "16990-17084",
          "19748-17086",
          "19740-17084"
        ],
        "known_affected": [
          "17086-3",
          "17084-4",
          "17086-1",
          "17084-2"
        ]
      },
      "references": [
        {
          "category": "self",
          "summary": "CVE-2024-21892 On Linux Node.js ignores certain environment variables if those may have been set by an unprivileged user while the process is running with elevated privileges with the only exception of CAP_NET_BIND_SERVICE.\nDue to a bug in the implementation of this exception Node.js incorrectly applies this exception even when certain other capabilities have been set.\nThis allows unprivileged users to inject code that inherits the process\u0027s elevated privileges. - VEX",
          "url": "https://msrc.microsoft.com/csaf/vex/2024/msrc_cve-2024-21892.json"
        }
      ],
      "remediations": [
        {
          "category": "vendor_fix",
          "date": "2024-02-26T00:00:00.000Z",
          "details": "18.20.2-1:Security Update:https://learn.microsoft.com/en-us/azure/azure-linux/tutorial-azure-linux-upgrade",
          "product_ids": [
            "17086-3",
            "17086-1"
          ],
          "url": "https://learn.microsoft.com/en-us/azure/azure-linux/tutorial-azure-linux-upgrade"
        },
        {
          "category": "vendor_fix",
          "date": "2024-02-26T00:00:00.000Z",
          "details": "20.14.0-1:Security Update:https://learn.microsoft.com/en-us/azure/azure-linux/tutorial-azure-linux-upgrade",
          "product_ids": [
            "17084-4",
            "17084-2"
          ],
          "url": "https://learn.microsoft.com/en-us/azure/azure-linux/tutorial-azure-linux-upgrade"
        }
      ],
      "scores": [
        {
          "cvss_v3": {
            "attackComplexity": "LOW",
            "attackVector": "LOCAL",
            "availabilityImpact": "HIGH",
            "baseScore": 7.8,
            "baseSeverity": "HIGH",
            "confidentialityImpact": "HIGH",
            "environmentalsScore": 0.0,
            "integrityImpact": "HIGH",
            "privilegesRequired": "LOW",
            "scope": "UNCHANGED",
            "temporalScore": 7.8,
            "userInteraction": "NONE",
            "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
            "version": "3.1"
          },
          "products": [
            "17086-3",
            "17084-4",
            "17086-1",
            "17084-2"
          ]
        }
      ],
      "title": "On Linux Node.js ignores certain environment variables if those may have been set by an unprivileged user while the process is running with elevated privileges with the only exception of CAP_NET_BIND_SERVICE.\nDue to a bug in the implementation of this exception Node.js incorrectly applies this exception even when certain other capabilities have been set.\nThis allows unprivileged users to inject code that inherits the process\u0027s elevated privileges."
    }
  ]
}


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