msrc_cve-2022-32206
Vulnerability from csaf_microsoft
Published
2022-07-02 00:00
Modified
2022-07-19 00:00
Summary
curl < 7.84.0 supports "chained" HTTP compression algorithms meaning that a serverresponse can be compressed multiple times and potentially with different algorithms. The number of acceptable "links" in this "decompression chain" was unbounded allowing a malicious server to insert a virtually unlimited number of compression steps.The use of such a decompression chain could result in a "malloc bomb" makingcurl end up spending enormous amounts of allocated heap memory or trying toand returning out of memory errors.

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-2022-32206 curl \u003c 7.84.0 supports \"chained\" HTTP compression algorithms meaning that a serverresponse can be compressed multiple times and potentially with different algorithms. The number of acceptable \"links\" in this \"decompression chain\" was unbounded allowing a malicious server to insert a virtually unlimited number of compression steps.The use of such a decompression chain could result in a \"malloc bomb\" makingcurl end up spending enormous amounts of allocated heap memory or trying toand returning out of memory errors. - VEX",
        "url": "https://msrc.microsoft.com/csaf/vex/2022/msrc_cve-2022-32206.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": "curl \u003c 7.84.0 supports \"chained\" HTTP compression algorithms meaning that a serverresponse can be compressed multiple times and potentially with different algorithms. The number of acceptable \"links\" in this \"decompression chain\" was unbounded allowing a malicious server to insert a virtually unlimited number of compression steps.The use of such a decompression chain could result in a \"malloc bomb\" makingcurl end up spending enormous amounts of allocated heap memory or trying toand returning out of memory errors.",
    "tracking": {
      "current_release_date": "2022-07-19T00:00:00.000Z",
      "generator": {
        "date": "2025-10-19T23:43:30.799Z",
        "engine": {
          "name": "MSRC Generator",
          "version": "1.0"
        }
      },
      "id": "msrc_CVE-2022-32206",
      "initial_release_date": "2022-07-02T00:00:00.000Z",
      "revision_history": [
        {
          "date": "2022-07-19T00:00:00.000Z",
          "legacy_version": "1",
          "number": "1",
          "summary": "Information published."
        }
      ],
      "status": "final",
      "version": "1"
    }
  },
  "product_tree": {
    "branches": [
      {
        "branches": [
          {
            "branches": [
              {
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                "name": "3.0",
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                  "product_id": "17084"
                }
              },
              {
                "category": "product_version",
                "name": "1.0",
                "product": {
                  "name": "CBL Mariner 1.0",
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                }
              },
              {
                "category": "product_version",
                "name": "2.0",
                "product": {
                  "name": "CBL Mariner 2.0",
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                }
              }
            ],
            "category": "product_name",
            "name": "Azure Linux"
          },
          {
            "branches": [
              {
                "category": "product_version_range",
                "name": "\u003ccm1 curl 7.84.0-1",
                "product": {
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                  "product_id": "4"
                }
              },
              {
                "category": "product_version",
                "name": "cm1 curl 7.84.0-1",
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              },
              {
                "category": "product_version_range",
                "name": "\u003ccbl2 curl 7.84.0-1",
                "product": {
                  "name": "\u003ccbl2 curl 7.84.0-1",
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                }
              },
              {
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                "name": "cbl2 curl 7.84.0-1",
                "product": {
                  "name": "cbl2 curl 7.84.0-1",
                  "product_id": "18670"
                }
              }
            ],
            "category": "product_name",
            "name": "curl"
          },
          {
            "category": "product_name",
            "name": "azl3 rust 1.86.0-1",
            "product": {
              "name": "azl3 rust 1.86.0-1",
              "product_id": "1"
            }
          },
          {
            "category": "product_name",
            "name": "azl3 rust 1.75.0-14",
            "product": {
              "name": "azl3 rust 1.75.0-14",
              "product_id": "2"
            }
          }
        ],
        "category": "vendor",
        "name": "Microsoft"
      }
    ],
    "relationships": [
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        "category": "default_component_of",
        "full_product_name": {
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      },
      {
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        },
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        "relates_to_product_reference": "16820"
      },
      {
        "category": "default_component_of",
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        },
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        "relates_to_product_reference": "17086"
      },
      {
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        "full_product_name": {
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      },
      {
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        },
        "product_reference": "2",
        "relates_to_product_reference": "17084"
      }
    ]
  },
  "vulnerabilities": [
    {
      "cve": "CVE-2022-32206",
      "cwe": {
        "id": "CWE-770",
        "name": "Allocation of Resources Without Limits or Throttling"
      },
      "flags": [
        {
          "label": "vulnerable_code_not_in_execute_path",
          "product_ids": [
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            "17084-2"
          ]
        }
      ],
      "notes": [
        {
          "category": "general",
          "text": "hackerone",
          "title": "Assigning CNA"
        }
      ],
      "product_status": {
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          "18669-16820",
          "18670-17086"
        ],
        "known_affected": [
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          "17086-3"
        ],
        "known_not_affected": [
          "17084-1",
          "17084-2"
        ]
      },
      "references": [
        {
          "category": "self",
          "summary": "CVE-2022-32206 curl \u003c 7.84.0 supports \"chained\" HTTP compression algorithms meaning that a serverresponse can be compressed multiple times and potentially with different algorithms. The number of acceptable \"links\" in this \"decompression chain\" was unbounded allowing a malicious server to insert a virtually unlimited number of compression steps.The use of such a decompression chain could result in a \"malloc bomb\" makingcurl end up spending enormous amounts of allocated heap memory or trying toand returning out of memory errors. - VEX",
          "url": "https://msrc.microsoft.com/csaf/vex/2022/msrc_cve-2022-32206.json"
        }
      ],
      "remediations": [
        {
          "category": "vendor_fix",
          "date": "2022-07-19T00:00:00.000Z",
          "details": "7.84.0-1:Security Update:https://learn.microsoft.com/en-us/azure/azure-linux/tutorial-azure-linux-upgrade",
          "product_ids": [
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            "17086-3"
          ],
          "url": "https://learn.microsoft.com/en-us/azure/azure-linux/tutorial-azure-linux-upgrade"
        }
      ],
      "scores": [
        {
          "cvss_v3": {
            "attackComplexity": "LOW",
            "attackVector": "NETWORK",
            "availabilityImpact": "HIGH",
            "baseScore": 6.5,
            "baseSeverity": "MEDIUM",
            "confidentialityImpact": "NONE",
            "environmentalsScore": 0.0,
            "integrityImpact": "NONE",
            "privilegesRequired": "NONE",
            "scope": "UNCHANGED",
            "temporalScore": 6.5,
            "userInteraction": "REQUIRED",
            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H",
            "version": "3.1"
          },
          "products": [
            "16820-4",
            "17086-3"
          ]
        }
      ],
      "title": "curl \u003c 7.84.0 supports \"chained\" HTTP compression algorithms meaning that a serverresponse can be compressed multiple times and potentially with different algorithms. The number of acceptable \"links\" in this \"decompression chain\" was unbounded allowing a malicious server to insert a virtually unlimited number of compression steps.The use of such a decompression chain could result in a \"malloc bomb\" makingcurl end up spending enormous amounts of allocated heap memory or trying toand returning out of memory errors."
    }
  ]
}


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