{
  "document": {
    "acknowledgments": [
      {
        "summary": "Cisco would like to thank Steve Smith for reporting this vulnerability."
      }
    ],
    "category": "csaf_security_advisory",
    "csaf_version": "2.0",
    "notes": [
      {
        "category": "summary",
        "text": "A vulnerability in the filesystem image parser for Hierarchical File System Plus (HFS+) of ClamAV could allow an unauthenticated, remote attacker to cause a denial of service (DoS) condition on an affected device.\r\n\r\nThis vulnerability is due to an incorrect check for completion when a file is decompressed, which may result in a loop condition that could cause the affected software to stop responding. An attacker could exploit this vulnerability by submitting a crafted HFS+ filesystem image to be scanned by ClamAV on an affected device. A successful exploit could allow the attacker to cause the ClamAV scanning process to stop responding, resulting in a DoS condition on the affected software and consuming available system resources.\r\n\r\nFor a description of this vulnerability, see the ClamAV blog [\"https://blog.clamav.net/2023/07/2023-08-16-releases.html\"].\r\n\r\nCisco has released software updates that address this vulnerability. There are no workarounds that address this vulnerability.\r\n\r\n",
        "title": "Summary"
      },
      {
        "category": "general",
        "text": "The Vulnerable Products [\"#vp\"] section includes Cisco bug IDs for each affected product. The bugs are accessible through the Cisco Bug Search Tool [\"https://bst.cloudapps.cisco.com/bugsearch/bug/BUGID\"] and contain additional platform-specific information, including workarounds (if available) and fixed software releases.",
        "title": "Affected Products"
      },
      {
        "category": "general",
        "text": "The following table lists Cisco products that are affected by the vulnerability that is described in this advisory. Customers should refer to the associated Cisco bug IDs for further details.\r\n        Affected Cisco Software Platform  CVSS Base Score  Security Impact Rating  Cisco Bug ID  First Fixed Release          Secure Endpoint Connector for Linux [\"#medium\"]  5.3  Medium  CSCwf39307 [\"https://bst.cloudapps.cisco.com/bugsearch/bug/CSCwf39307\"]  1.20.5.955\r\n1.22.0      Secure Endpoint Connector for MacOS [\"#medium\"]  5.3  Medium  CSCwf39308 [\"https://bst.cloudapps.cisco.com/bugsearch/bug/CSCwf39308\"]  1.22.0      Secure Endpoint Connector for Windows [\"#high\"]  7.5  High  CSCwf39309 [\"https://bst.cloudapps.cisco.com/bugsearch/bug/CSCwf39309\"]  7.5.13.21586\r\n8.1.7.21585      Secure Endpoint Private Cloud [\"#high\"]  7.5  High  CSCwf39310 [\"https://bst.cloudapps.cisco.com/bugsearch/bug/CSCwf39310\"]  3.8.0 or later with updated connectors\r\nCisco products may be impacted differently depending on implementation and usage of ClamAV. For information the effects of this vulnerability on specific Cisco products, see the Details [\"#details\"] section.",
        "title": "Vulnerable Products"
      },
      {
        "category": "general",
        "text": "Only products listed in the Vulnerable Products [\"#vp\"] section of this advisory are known to be affected by this vulnerability.\r\n\r\nCisco has confirmed that this vulnerability does not affect the following Cisco products:\r\n\r\nFirepower Threat Defense Software\r\nSecure Email Appliance, formerly Email Security Appliance\r\nSecure Web Appliance\r\n\r\nAttention: Simplifying the Cisco portfolio includes the renaming of security products under one brand: Cisco Secure. For more information, see Meet Cisco Secure [\"https://www.cisco.com/c/en/us/products/security/secure-names.html\"].",
        "title": "Products Confirmed Not Vulnerable"
      },
      {
        "category": "general",
        "text": "Details about the potential effects of the vulnerability on each platform are as follows:\r\n\r\nImpacts of ClamAV DoS Vulnerability on Windows Platforms\r\n\r\nThe Security Impact Rating (SIR) for this vulnerability is High only for Windows-based platforms because those platforms run the ClamAV scanning process as a service that could enter a loop condition, which would consume available CPU resources and delay or prevent further scanning operations. See the Assessing Security Risk [\"https://sec.cloudapps.cisco.com/security/center/resources/security_vulnerability_policy.html#asr\"] section of the Cisco Security Vulnerability Policy for information about vulnerability scoring and SIRs.\r\n\r\nA vulnerability in the HFS+ filesystem image parser of ClamAV could allow an attacker to cause Cisco Secure Endpoint Connector for Windows to enter a loop and stop responding, resulting in a DoS condition. Cisco Secure Endpoint Connector for Windows, which is distributed from Cisco Secure Endpoint Private Cloud, is affected by this vulnerability.\r\n\r\nBug ID(s): CSCwf39309 [\"https://bst.cloudapps.cisco.com/bugsearch/bug/CSCwf39309\"]\r\nSecurity Impact Rating (SIR): High\r\nCVSS Base Score: 7.5\r\nCVSS Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H\r\n\r\nImpacts of ClamAV DoS Vulnerability on Linux and MacOS Platforms\r\n\r\nThe SIR for this vulnerability is Medium on Linux and Mac platforms because those platforms run the ClamAV scanning process in a separate, lower-privileged security context. See the Assessing Security Risk [\"https://sec.cloudapps.cisco.com/security/center/resources/security_vulnerability_policy.html#asr\"] section of the Cisco Security Vulnerability Policy for information about vulnerability scoring and SIRs.\r\n\r\nA vulnerability in the HFS+ filesystem image parser of ClamAV could allow an attacker to cause Cisco Secure Endpoint Connector for Linux or MacOS to become unresponsive and recover on its own, with limited impact to application functionality. Cisco Secure Endpoint Connector for Linux and Secure Endpoint Connector for MacOS, which are distributed from Cisco Secure Endpoint Private Cloud, are affected by this vulnerability.\r\n\r\nBug ID(s): CSCwf39307 [\"https://bst.cloudapps.cisco.com/bugsearch/bug/CSCwf39307\"], CSCwf39308 [\"https://bst.cloudapps.cisco.com/bugsearch/bug/CSCwf39308\"]\r\nSecurity Impact Rating (SIR): Medium\r\nCVSS Base Score: 5.3\r\nCVSS Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L",
        "title": "Details"
      },
      {
        "category": "general",
        "text": "There are no workarounds that address this vulnerability.",
        "title": "Workarounds"
      },
      {
        "category": "general",
        "text": "For information about fixed software releases [\"https://sec.cloudapps.cisco.com/security/center/resources/security_vulnerability_policy.html#fixes\"], consult the Cisco bugs identified in the Vulnerable Products [\"#vp\"] section of this advisory.\r\n\r\nWhen considering software upgrades [\"https://sec.cloudapps.cisco.com/security/center/resources/security_vulnerability_policy.html#fixes\"], customers are advised to regularly consult the advisories for Cisco products, which are available from the Cisco Security Advisories [\"https://www.cisco.com/go/psirt\"] page, to determine exposure and a complete upgrade solution.\r\n\r\nIn all cases, customers should ensure that the devices to be upgraded contain sufficient memory and confirm that current hardware and software configurations will continue to be supported properly by the new release. If the information is not clear, customers are advised to contact the Cisco Technical Assistance Center (TAC) or their contracted maintenance providers.\r\n      Fixed Releases\r\nCustomers are advised to upgrade to an appropriate fixed software release [\"https://sec.cloudapps.cisco.com/security/center/resources/security_vulnerability_policy.html#fixes\"] as indicated in the following table:\r\n        Affected Cisco Software Platform  First Fixed Release          Secure Endpoint Connector for Linux  1.20.5.9551\r\n1.22.01      Secure Endpoint Connector for MacOS  1.22.01      Secure Endpoint Connector for Windows  7.5.13.215861\r\n8.1.7.215851      Secure Endpoint Private Cloud  3.8.0 or later with updated connectors2\r\n1. Updated releases of Cisco Secure Endpoint Connector are available through the Cisco Secure Endpoint portal. Depending on the configured policy, Cisco Secure Endpoint Connector will automatically update.\r\n2. Affected releases of Cisco Secure Endpoint Connector clients for Cisco Secure Endpoint Private Cloud have been updated in the connectors repository. Customers will get these connector updates through normal content update processes.\r\nThe Cisco Product Security Incident Response Team (PSIRT) validates only the affected and fixed release information that is documented in this advisory.",
        "title": "Fixed Software"
      },
      {
        "category": "general",
        "text": "To learn about Cisco security vulnerability disclosure policies and publications, see the Security Vulnerability Policy [\"http://www.cisco.com/web/about/security/psirt/security_vulnerability_policy.html\"]. This document also contains instructions for obtaining fixed software and receiving security vulnerability information from Cisco.",
        "title": "Vulnerability Policy"
      },
      {
        "category": "general",
        "text": "The Cisco PSIRT is aware that proof-of-concept exploit code is available for the vulnerability that is described in this advisory.\r\n\r\nThe Cisco PSIRT is not aware of any malicious use of the vulnerability that is described in this advisory.",
        "title": "Exploitation and Public Announcements"
      },
      {
        "category": "general",
        "text": "Cisco would like to thank Steve Smith for reporting this vulnerability.",
        "title": "Source"
      },
      {
        "category": "legal_disclaimer",
        "text": "THIS DOCUMENT IS PROVIDED ON AN \"AS IS\" BASIS AND DOES NOT IMPLY ANY KIND OF GUARANTEE OR WARRANTY, INCLUDING THE WARRANTIES OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR USE. YOUR USE OF THE INFORMATION ON THE DOCUMENT OR MATERIALS LINKED FROM THE DOCUMENT IS AT YOUR OWN RISK. CISCO RESERVES THE RIGHT TO CHANGE OR UPDATE THIS DOCUMENT AT ANY TIME.\r\n\r\nA standalone copy or paraphrase of the text of this document that omits the distribution URL is an uncontrolled copy and may lack important information or contain factual errors. The information in this document is intended for end users of Cisco products.",
        "title": "Legal Disclaimer"
      }
    ],
    "publisher": {
      "category": "vendor",
      "contact_details": "psirt@cisco.com",
      "issuing_authority": "Cisco PSIRT",
      "name": "Cisco",
      "namespace": "https://wwww.cisco.com"
    },
    "references": [
      {
        "category": "self",
        "summary": "ClamAV HFS+ File Scanning Infinite Loop Denial of Service Vulnerability",
        "url": "https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-clamav-rNwNEEee"
      },
      {
        "category": "external",
        "summary": "Cisco Security Vulnerability Policy",
        "url": "https://sec.cloudapps.cisco.com/security/center/resources/security_vulnerability_policy.html"
      },
      {
        "category": "external",
        "summary": "ClamAV blog",
        "url": "https://blog.clamav.net/2023/07/2023-08-16-releases.html"
      },
      {
        "category": "external",
        "summary": "Cisco Bug Search Tool",
        "url": "https://bst.cloudapps.cisco.com/bugsearch/bug/BUGID"
      },
      {
        "category": "external",
        "summary": "CSCwf39307",
        "url": "https://bst.cloudapps.cisco.com/bugsearch/bug/CSCwf39307"
      },
      {
        "category": "external",
        "summary": "CSCwf39308",
        "url": "https://bst.cloudapps.cisco.com/bugsearch/bug/CSCwf39308"
      },
      {
        "category": "external",
        "summary": "CSCwf39309",
        "url": "https://bst.cloudapps.cisco.com/bugsearch/bug/CSCwf39309"
      },
      {
        "category": "external",
        "summary": "CSCwf39310",
        "url": "https://bst.cloudapps.cisco.com/bugsearch/bug/CSCwf39310"
      },
      {
        "category": "external",
        "summary": "Meet Cisco Secure",
        "url": "https://www.cisco.com/c/en/us/products/security/secure-names.html"
      },
      {
        "category": "external",
        "summary": "Assessing Security Risk",
        "url": "https://sec.cloudapps.cisco.com/security/center/resources/security_vulnerability_policy.html#asr"
      },
      {
        "category": "external",
        "summary": "fixed software releases",
        "url": "https://sec.cloudapps.cisco.com/security/center/resources/security_vulnerability_policy.html#fixes"
      },
      {
        "category": "external",
        "summary": "Cisco Security Advisories",
        "url": "https://www.cisco.com/go/psirt"
      },
      {
        "category": "external",
        "summary": "Security Vulnerability Policy",
        "url": "http://www.cisco.com/web/about/security/psirt/security_vulnerability_policy.html"
      }
    ],
    "title": "ClamAV HFS+ File Scanning Infinite Loop Denial of Service Vulnerability",
    "tracking": {
      "current_release_date": "2023-08-25T16:08:02+00:00",
      "generator": {
        "date": "2023-08-25T16:08:06+00:00",
        "engine": {
          "name": "TVCE"
        }
      },
      "id": "cisco-sa-clamav-rNwNEEee",
      "initial_release_date": "2023-08-16T16:00:00+00:00",
      "revision_history": [
        {
          "date": "2023-08-16T15:59:37+00:00",
          "number": "1.0.0",
          "summary": "Initial public release."
        },
        {
          "date": "2023-08-25T16:08:02+00:00",
          "number": "1.1.0",
          "summary": "Updated the fix information for Secure Endpoint for Linux."
        }
      ],
      "status": "final",
      "version": "1.1.0"
    }
  },
  "product_tree": {
    "branches": [
      {
        "branches": [
          {
            "category": "product_family",
            "name": "Cisco Secure Endpoint",
            "product": {
              "name": "Cisco Secure Endpoint ",
              "product_id": "CSAFPID-221075"
            }
          },
          {
            "category": "product_family",
            "name": "Cisco Secure Endpoint Private Cloud Console",
            "product": {
              "name": "Cisco Secure Endpoint Private Cloud Console ",
              "product_id": "CSAFPID-292710"
            }
          }
        ],
        "category": "vendor",
        "name": "Cisco"
      }
    ]
  },
  "vulnerabilities": [
    {
      "cve": "CVE-2023-20197",
      "ids": [
        {
          "system_name": "Cisco Bug ID",
          "text": "CSCwf39307"
        },
        {
          "system_name": "Cisco Bug ID",
          "text": "CSCwf39308"
        },
        {
          "system_name": "Cisco Bug ID",
          "text": "CSCwf39309"
        },
        {
          "system_name": "Cisco Bug ID",
          "text": "CSCwf39310"
        }
      ],
      "notes": [
        {
          "category": "other",
          "text": "Complete.",
          "title": "Affected Product Comprehensiveness"
        }
      ],
      "product_status": {
        "known_affected": [
          "CSAFPID-221075",
          "CSAFPID-292710"
        ]
      },
      "release_date": "2023-08-16T16:00:00+00:00",
      "remediations": [
        {
          "category": "vendor_fix",
          "details": "Cisco has released software updates that address this vulnerability.",
          "product_ids": [
            "CSAFPID-221075",
            "CSAFPID-292710"
          ],
          "url": "https://software.cisco.com"
        }
      ],
      "scores": [
        {
          "cvss_v3": {
            "baseScore": 7.5,
            "baseSeverity": "HIGH",
            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
            "version": "3.1"
          },
          "products": [
            "CSAFPID-221075",
            "CSAFPID-292710"
          ]
        }
      ],
      "title": "ClamAV HFS+ Image File Scanning Infinite Loop Denial of Service Vulnerability"
    }
  ]
}