msrc_cve-2023-35945
Vulnerability from csaf_microsoft
Published
2023-07-01 07:00
Modified
2025-03-15 00:00
Summary
Envoy vulnerable to HTTP/2 memory leak in nghttp2 codec

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-2023-35945 Envoy vulnerable to HTTP/2 memory leak in nghttp2 codec - VEX",
        "url": "https://msrc.microsoft.com/csaf/vex/2023/msrc_cve-2023-35945.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": "Envoy vulnerable to HTTP/2 memory leak in nghttp2 codec",
    "tracking": {
      "current_release_date": "2025-03-15T00:00:00.000Z",
      "generator": {
        "date": "2025-10-20T00:33:55.060Z",
        "engine": {
          "name": "MSRC Generator",
          "version": "1.0"
        }
      },
      "id": "msrc_CVE-2023-35945",
      "initial_release_date": "2023-07-01T07:00:00.000Z",
      "revision_history": [
        {
          "date": "2023-08-01T00:00:00.000Z",
          "legacy_version": "1",
          "number": "1",
          "summary": "Information published."
        },
        {
          "date": "2023-07-31T00:00:00.000Z",
          "legacy_version": "1.1",
          "number": "2",
          "summary": "Information published."
        },
        {
          "date": "2025-03-15T00:00:00.000Z",
          "legacy_version": "1.2",
          "number": "3",
          "summary": "Added cmake to Azure Linux 3.0\nAdded nodejs to CBL-Mariner 2.0\nAdded cmake to CBL-Mariner 2.0\nAdded nodejs18 to CBL-Mariner 2.0\nAdded nghttp2 to CBL-Mariner 2.0"
        }
      ],
      "status": "final",
      "version": "3"
    }
  },
  "product_tree": {
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      {
        "branches": [
          {
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              {
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                "name": "2.0",
                "product": {
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                  "product_id": "17086"
                }
              },
              {
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                "name": "3.0",
                "product": {
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                }
              }
            ],
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            "name": "Azure Linux"
          },
          {
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                "product": {
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                  "product_id": "5"
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              },
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          },
          {
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              {
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                "name": "\u003ccbl2 nghttp2 1.46.0-3",
                "product": {
                  "name": "\u003ccbl2 nghttp2 1.46.0-3",
                  "product_id": "4"
                }
              },
              {
                "category": "product_version",
                "name": "cbl2 nghttp2 1.46.0-3",
                "product": {
                  "name": "cbl2 nghttp2 1.46.0-3",
                  "product_id": "18338"
                }
              }
            ],
            "category": "product_name",
            "name": "nghttp2"
          },
          {
            "branches": [
              {
                "category": "product_version_range",
                "name": "\u003ccbl2 cmake 3.21.4-8",
                "product": {
                  "name": "\u003ccbl2 cmake 3.21.4-8",
                  "product_id": "3"
                }
              },
              {
                "category": "product_version",
                "name": "cbl2 cmake 3.21.4-8",
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                  "product_id": "18339"
                }
              }
            ],
            "category": "product_name",
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          },
          {
            "branches": [
              {
                "category": "product_version_range",
                "name": "\u003ccbl2 nodejs 16.20.2-2",
                "product": {
                  "name": "\u003ccbl2 nodejs 16.20.2-2",
                  "product_id": "7"
                }
              },
              {
                "category": "product_version",
                "name": "cbl2 nodejs 16.20.2-2",
                "product": {
                  "name": "cbl2 nodejs 16.20.2-2",
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                }
              }
            ],
            "category": "product_name",
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          },
          {
            "category": "product_name",
            "name": "azl3 cmake 3.30.3-6",
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              "name": "azl3 cmake 3.30.3-6",
              "product_id": "6"
            }
          },
          {
            "category": "product_name",
            "name": "azl3 rust 1.75.0-14",
            "product": {
              "name": "azl3 rust 1.75.0-14",
              "product_id": "2"
            }
          },
          {
            "category": "product_name",
            "name": "azl3 rust 1.86.0-1",
            "product": {
              "name": "azl3 rust 1.86.0-1",
              "product_id": "1"
            }
          }
        ],
        "category": "vendor",
        "name": "Microsoft"
      }
    ],
    "relationships": [
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      },
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      },
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        "relates_to_product_reference": "17086"
      },
      {
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        },
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        "relates_to_product_reference": "17086"
      },
      {
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        },
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      },
      {
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        "relates_to_product_reference": "17086"
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          "product_id": "17084-1"
        },
        "product_reference": "1",
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    ]
  },
  "vulnerabilities": [
    {
      "cve": "CVE-2023-35945",
      "cwe": {
        "id": "CWE-459",
        "name": "Incomplete Cleanup"
      },
      "flags": [
        {
          "label": "vulnerable_code_not_in_execute_path",
          "product_ids": [
            "17084-6",
            "17084-2",
            "17084-1"
          ]
        }
      ],
      "notes": [
        {
          "category": "general",
          "text": "GitHub_M",
          "title": "Assigning CNA"
        }
      ],
      "product_status": {
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          "18338-17086",
          "18339-17086",
          "17454-17086"
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          "17086-4",
          "17086-3",
          "17086-7"
        ],
        "known_not_affected": [
          "17084-6",
          "17084-2",
          "17084-1"
        ]
      },
      "references": [
        {
          "category": "self",
          "summary": "CVE-2023-35945 Envoy vulnerable to HTTP/2 memory leak in nghttp2 codec - VEX",
          "url": "https://msrc.microsoft.com/csaf/vex/2023/msrc_cve-2023-35945.json"
        }
      ],
      "remediations": [
        {
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          "date": "2023-07-31T00:00:00.000Z",
          "details": "18.17.1-2:Security Update:https://learn.microsoft.com/en-us/azure/azure-linux/tutorial-azure-linux-upgrade",
          "product_ids": [
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          ],
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        },
        {
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          "date": "2023-07-31T00:00:00.000Z",
          "details": "1.46.0-3:Security Update:https://learn.microsoft.com/en-us/azure/azure-linux/tutorial-azure-linux-upgrade",
          "product_ids": [
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          "url": "https://learn.microsoft.com/en-us/azure/azure-linux/tutorial-azure-linux-upgrade"
        },
        {
          "category": "vendor_fix",
          "date": "2023-07-31T00:00:00.000Z",
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          "product_ids": [
            "17086-3"
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          "url": "https://learn.microsoft.com/en-us/azure/azure-linux/tutorial-azure-linux-upgrade"
        },
        {
          "category": "vendor_fix",
          "date": "2023-07-31T00:00:00.000Z",
          "details": "16.20.2-2:Security Update:https://learn.microsoft.com/en-us/azure/azure-linux/tutorial-azure-linux-upgrade",
          "product_ids": [
            "17086-7"
          ],
          "url": "https://learn.microsoft.com/en-us/azure/azure-linux/tutorial-azure-linux-upgrade"
        }
      ],
      "scores": [
        {
          "cvss_v3": {
            "attackComplexity": "LOW",
            "attackVector": "NETWORK",
            "availabilityImpact": "HIGH",
            "baseScore": 7.5,
            "baseSeverity": "HIGH",
            "confidentialityImpact": "NONE",
            "environmentalsScore": 0.0,
            "integrityImpact": "NONE",
            "privilegesRequired": "NONE",
            "scope": "UNCHANGED",
            "temporalScore": 7.5,
            "userInteraction": "NONE",
            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
            "version": "3.1"
          },
          "products": [
            "17086-5",
            "17086-4",
            "17086-3",
            "17086-7"
          ]
        }
      ],
      "title": "Envoy vulnerable to HTTP/2 memory leak in nghttp2 codec"
    }
  ]
}


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