{
  "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-2023-20032 On Feb 15 2023 the following vulnerability in the ClamAV scanning library was disclosed:\n\n\n \n A vulnerability in the HFS+ partition file parser of ClamAV versions 1.0.0 and earlier 0.105.1 and earlier and 0.103.7 and earlier could allow an unauthenticated remote attacker to execute arbitrary code.\n\n\n \n This vulnerability is due to a missing buffer size check that may result in a heap buffer overflow write. An attacker could exploit this vulnerability by submitting a crafted HFS+ partition file to be scanned by ClamAV on an affected device. A successful exploit could allow the attacker to execute arbitrary code with the privileges of the ClamAV scanning process or else crash the process resulting in a denial of service (DoS) condition.\n\n\n For a description of this vulnerability see the ClamAV blog [\"https://blog.clamav.net/\"]. - VEX",
        "url": "https://msrc.microsoft.com/csaf/vex/2023/msrc_cve-2023-20032.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 Feb 15 2023 the following vulnerability in the ClamAV scanning library was disclosed:\n\n\n \n A vulnerability in the HFS+ partition file parser of ClamAV versions 1.0.0 and earlier 0.105.1 and earlier and 0.103.7 and earlier could allow an unauthenticated remote attacker to execute arbitrary code.\n\n\n \n This vulnerability is due to a missing buffer size check that may result in a heap buffer overflow write. An attacker could exploit this vulnerability by submitting a crafted HFS+ partition file to be scanned by ClamAV on an affected device. A successful exploit could allow the attacker to execute arbitrary code with the privileges of the ClamAV scanning process or else crash the process resulting in a denial of service (DoS) condition.\n\n\n For a description of this vulnerability see the ClamAV blog [\"https://blog.clamav.net/\"].",
    "tracking": {
      "current_release_date": "2023-03-01T00:00:00.000Z",
      "generator": {
        "date": "2025-10-20T00:15:36.618Z",
        "engine": {
          "name": "MSRC Generator",
          "version": "1.0"
        }
      },
      "id": "msrc_CVE-2023-20032",
      "initial_release_date": "2023-02-01T00:00:00.000Z",
      "revision_history": [
        {
          "date": "2023-03-01T00:00:00.000Z",
          "legacy_version": "1",
          "number": "1",
          "summary": "Information published."
        }
      ],
      "status": "final",
      "version": "1"
    }
  },
  "product_tree": {
    "branches": [
      {
        "branches": [
          {
            "branches": [
              {
                "category": "product_version",
                "name": "2.0",
                "product": {
                  "name": "CBL Mariner 2.0",
                  "product_id": "17086"
                }
              }
            ],
            "category": "product_name",
            "name": "Azure Linux"
          },
          {
            "branches": [
              {
                "category": "product_version_range",
                "name": "\u003ccbl2 clamav 0.105.2-1",
                "product": {
                  "name": "\u003ccbl2 clamav 0.105.2-1",
                  "product_id": "1"
                }
              },
              {
                "category": "product_version",
                "name": "cbl2 clamav 0.105.2-1",
                "product": {
                  "name": "cbl2 clamav 0.105.2-1",
                  "product_id": "18402"
                }
              }
            ],
            "category": "product_name",
            "name": "clamav"
          }
        ],
        "category": "vendor",
        "name": "Microsoft"
      }
    ],
    "relationships": [
      {
        "category": "default_component_of",
        "full_product_name": {
          "name": "\u003ccbl2 clamav 0.105.2-1 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 clamav 0.105.2-1 as a component of CBL Mariner 2.0",
          "product_id": "18402-17086"
        },
        "product_reference": "18402",
        "relates_to_product_reference": "17086"
      }
    ]
  },
  "vulnerabilities": [
    {
      "cve": "CVE-2023-20032",
      "cwe": {
        "id": "CWE-787",
        "name": "Out-of-bounds Write"
      },
      "notes": [
        {
          "category": "general",
          "text": "cisco",
          "title": "Assigning CNA"
        }
      ],
      "product_status": {
        "fixed": [
          "18402-17086"
        ],
        "known_affected": [
          "17086-1"
        ]
      },
      "references": [
        {
          "category": "self",
          "summary": "CVE-2023-20032 On Feb 15 2023 the following vulnerability in the ClamAV scanning library was disclosed:\n\n\n \n A vulnerability in the HFS+ partition file parser of ClamAV versions 1.0.0 and earlier 0.105.1 and earlier and 0.103.7 and earlier could allow an unauthenticated remote attacker to execute arbitrary code.\n\n\n \n This vulnerability is due to a missing buffer size check that may result in a heap buffer overflow write. An attacker could exploit this vulnerability by submitting a crafted HFS+ partition file to be scanned by ClamAV on an affected device. A successful exploit could allow the attacker to execute arbitrary code with the privileges of the ClamAV scanning process or else crash the process resulting in a denial of service (DoS) condition.\n\n\n For a description of this vulnerability see the ClamAV blog [\"https://blog.clamav.net/\"]. - VEX",
          "url": "https://msrc.microsoft.com/csaf/vex/2023/msrc_cve-2023-20032.json"
        }
      ],
      "remediations": [
        {
          "category": "vendor_fix",
          "date": "2023-03-01T00:00:00.000Z",
          "details": "0.105.2-1:Security Update:https://learn.microsoft.com/en-us/azure/azure-linux/tutorial-azure-linux-upgrade",
          "product_ids": [
            "17086-1"
          ],
          "url": "https://learn.microsoft.com/en-us/azure/azure-linux/tutorial-azure-linux-upgrade"
        }
      ],
      "scores": [
        {
          "cvss_v3": {
            "attackComplexity": "LOW",
            "attackVector": "NETWORK",
            "availabilityImpact": "HIGH",
            "baseScore": 9.8,
            "baseSeverity": "CRITICAL",
            "confidentialityImpact": "HIGH",
            "environmentalsScore": 0.0,
            "integrityImpact": "HIGH",
            "privilegesRequired": "NONE",
            "scope": "UNCHANGED",
            "temporalScore": 9.8,
            "userInteraction": "NONE",
            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
            "version": "3.1"
          },
          "products": [
            "17086-1"
          ]
        }
      ],
      "title": "On Feb 15 2023 the following vulnerability in the ClamAV scanning library was disclosed:\n\n\n \n A vulnerability in the HFS+ partition file parser of ClamAV versions 1.0.0 and earlier 0.105.1 and earlier and 0.103.7 and earlier could allow an unauthenticated remote attacker to execute arbitrary code.\n\n\n \n This vulnerability is due to a missing buffer size check that may result in a heap buffer overflow write. An attacker could exploit this vulnerability by submitting a crafted HFS+ partition file to be scanned by ClamAV on an affected device. A successful exploit could allow the attacker to execute arbitrary code with the privileges of the ClamAV scanning process or else crash the process resulting in a denial of service (DoS) condition.\n\n\n For a description of this vulnerability see the ClamAV blog [\"https://blog.clamav.net/\"]."
    }
  ]
}