{
  "affected": [],
  "aliases": [
    "CVE-2021-34698"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-401"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2021-10-06T20:15:00Z",
    "severity": "HIGH"
  },
  "details": "A vulnerability in the proxy service of Cisco AsyncOS for Cisco Web Security Appliance (WSA) could allow an unauthenticated, remote attacker to exhaust system memory and cause a denial of service (DoS) condition on an affected device. This vulnerability is due to improper memory management in the proxy service of an affected device. An attacker could exploit this vulnerability by establishing a large number of HTTPS connections to the affected device. A successful exploit could allow the attacker to cause the system to stop processing new connections, which could result in a DoS condition. Note: Manual intervention may be required to recover from this situation.",
  "id": "GHSA-vj66-rqm3-j78p",
  "modified": "2022-05-24T19:16:41Z",
  "published": "2022-05-24T19:16:41Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2021-34698"
    },
    {
      "type": "WEB",
      "url": "https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-wsa-dos-fmHdKswk"
    }
  ],
  "schema_version": "1.4.0",
  "severity": []
}

{
  "$ref": "https://www.cert.ssi.gouv.fr/openapi.json",
  "affected_systems": [
    {
      "description": "Cisco Intersight Virtual Appliance versions ant\u00e9rieures \u00e0 1.0.9-302",
      "product": {
        "name": "N/A",
        "vendor": {
          "name": "Cisco",
          "scada": false
        }
      }
    },
    {
      "description": "Cisco AsyncOS pour Cisco WSA versions 12.5.x ant\u00e9rieures \u00e0 12.5.2-007",
      "product": {
        "name": "N/A",
        "vendor": {
          "name": "Cisco",
          "scada": false
        }
      }
    },
    {
      "description": "Cisco Identity Services Engine versions ant\u00e9rieures \u00e0 2.6 Patch10",
      "product": {
        "name": "Identity Services Engine",
        "vendor": {
          "name": "Cisco",
          "scada": false
        }
      }
    },
    {
      "description": "Cisco Identity Services Engine versions 2.7 ant\u00e9rieures \u00e0 2.7 Patch5",
      "product": {
        "name": "Identity Services Engine",
        "vendor": {
          "name": "Cisco",
          "scada": false
        }
      }
    },
    {
      "description": "Cisco AsyncOS pour Cisco WSA versions 12.0.x ant\u00e9rieures \u00e0 12.0.3-005",
      "product": {
        "name": "N/A",
        "vendor": {
          "name": "Cisco",
          "scada": false
        }
      }
    },
    {
      "description": "Cisco Small Business 220 Series Smart Switches versions ant\u00e9rieures \u00e0 1.2.1.2",
      "product": {
        "name": "Small Business",
        "vendor": {
          "name": "Cisco",
          "scada": false
        }
      }
    },
    {
      "description": "ATA 190 Analog Telephone Adapter (produit en fin de vie)",
      "product": {
        "name": "N/A",
        "vendor": {
          "name": "Cisco",
          "scada": false
        }
      }
    },
    {
      "description": "Cisco Identity Services Engine versions 3.x ant\u00e9rieures \u00e0 3.1",
      "product": {
        "name": "Identity Services Engine",
        "vendor": {
          "name": "Cisco",
          "scada": false
        }
      }
    },
    {
      "description": "ATA 192 Multiplatform Analog Telephone Adapter versions ant\u00e9rieures \u00e0 11.2.1",
      "product": {
        "name": "N/A",
        "vendor": {
          "name": "Cisco",
          "scada": false
        }
      }
    },
    {
      "description": "Cisco AsyncOS pour Cisco WSA versions 14.0.x ant\u00e9rieures \u00e0 14.0.1-014",
      "product": {
        "name": "N/A",
        "vendor": {
          "name": "Cisco",
          "scada": false
        }
      }
    },
    {
      "description": "Cisco AnyConnect Secure Mobility Client pour Linux et Mac OS versions ant\u00e9rieures \u00e0 4.10.03104",
      "product": {
        "name": "N/A",
        "vendor": {
          "name": "Cisco",
          "scada": false
        }
      }
    },
    {
      "description": "ATA 191 Multiplatform Analog Telephone Adapter versions ant\u00e9rieures \u00e0 11.2.1",
      "product": {
        "name": "N/A",
        "vendor": {
          "name": "Cisco",
          "scada": false
        }
      }
    },
    {
      "description": "ATA 191 Analog Telephone Adapter versions ant\u00e9rieures \u00e0 12.0(1)SR4",
      "product": {
        "name": "N/A",
        "vendor": {
          "name": "Cisco",
          "scada": false
        }
      }
    }
  ],
  "affected_systems_content": null,
  "content": "## Solution\n\nSe r\u00e9f\u00e9rer au bulletin de s\u00e9curit\u00e9 de l\u0027\u00e9diteur pour l\u0027obtention des\ncorrectifs (cf. section Documentation).\n",
  "cves": [
    {
      "name": "CVE-2021-34788",
      "url": "https://www.cve.org/CVERecord?id=CVE-2021-34788"
    },
    {
      "name": "CVE-2021-34779",
      "url": "https://www.cve.org/CVERecord?id=CVE-2021-34779"
    },
    {
      "name": "CVE-2021-1594",
      "url": "https://www.cve.org/CVERecord?id=CVE-2021-1594"
    },
    {
      "name": "CVE-2021-34775",
      "url": "https://www.cve.org/CVERecord?id=CVE-2021-34775"
    },
    {
      "name": "CVE-2021-34777",
      "url": "https://www.cve.org/CVERecord?id=CVE-2021-34777"
    },
    {
      "name": "CVE-2021-34780",
      "url": "https://www.cve.org/CVERecord?id=CVE-2021-34780"
    },
    {
      "name": "CVE-2021-34735",
      "url": "https://www.cve.org/CVERecord?id=CVE-2021-34735"
    },
    {
      "name": "CVE-2021-34698",
      "url": "https://www.cve.org/CVERecord?id=CVE-2021-34698"
    },
    {
      "name": "CVE-2021-34710",
      "url": "https://www.cve.org/CVERecord?id=CVE-2021-34710"
    },
    {
      "name": "CVE-2021-34748",
      "url": "https://www.cve.org/CVERecord?id=CVE-2021-34748"
    },
    {
      "name": "CVE-2021-34776",
      "url": "https://www.cve.org/CVERecord?id=CVE-2021-34776"
    },
    {
      "name": "CVE-2021-34778",
      "url": "https://www.cve.org/CVERecord?id=CVE-2021-34778"
    }
  ],
  "links": [],
  "reference": "CERTFR-2021-AVI-761",
  "revisions": [
    {
      "description": "Version initiale",
      "revision_date": "2021-10-07T00:00:00.000000"
    }
  ],
  "risks": [
    {
      "description": "D\u00e9ni de service \u00e0 distance"
    },
    {
      "description": "Ex\u00e9cution de code arbitraire \u00e0 distance"
    },
    {
      "description": "\u00c9l\u00e9vation de privil\u00e8ges"
    }
  ],
  "summary": "De multiples vuln\u00e9rabilit\u00e9s ont \u00e9t\u00e9 d\u00e9couvertes dans les produits Cisco.\nElles permettent \u00e0 un attaquant de provoquer une ex\u00e9cution de code\narbitraire \u00e0 distance, un d\u00e9ni de service \u00e0 distance et une \u00e9l\u00e9vation de\nprivil\u00e8ges.\n",
  "title": "Multiples vuln\u00e9rabilit\u00e9s dans les produits Cisco",
  "vendor_advisories": [
    {
      "published_at": null,
      "title": "Bulletin de s\u00e9curit\u00e9 Cisco cisco-sa-wsa-dos-fmHdKswk du 06 octobre 2021",
      "url": "https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-wsa-dos-fmHdKswk"
    },
    {
      "published_at": null,
      "title": "Bulletin de s\u00e9curit\u00e9 Cisco cisco-sa-ise-priv-esc-UwqPrBM3 du 06 octobre 2021",
      "url": "https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-ise-priv-esc-UwqPrBM3"
    },
    {
      "published_at": null,
      "title": "Bulletin de s\u00e9curit\u00e9 Cisco cisco-sa-ata19x-multivuln-A4J57F3 du 06 octobre 2021",
      "url": "https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-ata19x-multivuln-A4J57F3"
    },
    {
      "published_at": null,
      "title": "Bulletin de s\u00e9curit\u00e9 Cisco cisco-sa-ucsi2-command-inject-CGyC8y2R du 06 octobre 2021",
      "url": "https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-ucsi2-command-inject-CGyC8y2R"
    },
    {
      "published_at": null,
      "title": "Bulletin de s\u00e9curit\u00e9 Cisco cisco-sa-anyconnect-lib-hija-cAFB7x4q du 06 octobre 2021",
      "url": "https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-anyconnect-lib-hija-cAFB7x4q"
    },
    {
      "published_at": null,
      "title": "Bulletin de s\u00e9curit\u00e9 Cisco cisco-sa-sb220-lldp-multivuls-mVRUtQ8T du 06 octobre 2021",
      "url": "https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-sb220-lldp-multivuls-mVRUtQ8T"
    }
  ]
}

{
  "$ref": "https://www.cert.ssi.gouv.fr/openapi.json",
  "affected_systems": [
    {
      "description": "Cisco Intersight Virtual Appliance versions ant\u00e9rieures \u00e0 1.0.9-302",
      "product": {
        "name": "N/A",
        "vendor": {
          "name": "Cisco",
          "scada": false
        }
      }
    },
    {
      "description": "Cisco AsyncOS pour Cisco WSA versions 12.5.x ant\u00e9rieures \u00e0 12.5.2-007",
      "product": {
        "name": "N/A",
        "vendor": {
          "name": "Cisco",
          "scada": false
        }
      }
    },
    {
      "description": "Cisco Identity Services Engine versions ant\u00e9rieures \u00e0 2.6 Patch10",
      "product": {
        "name": "Identity Services Engine",
        "vendor": {
          "name": "Cisco",
          "scada": false
        }
      }
    },
    {
      "description": "Cisco Identity Services Engine versions 2.7 ant\u00e9rieures \u00e0 2.7 Patch5",
      "product": {
        "name": "Identity Services Engine",
        "vendor": {
          "name": "Cisco",
          "scada": false
        }
      }
    },
    {
      "description": "Cisco AsyncOS pour Cisco WSA versions 12.0.x ant\u00e9rieures \u00e0 12.0.3-005",
      "product": {
        "name": "N/A",
        "vendor": {
          "name": "Cisco",
          "scada": false
        }
      }
    },
    {
      "description": "Cisco Small Business 220 Series Smart Switches versions ant\u00e9rieures \u00e0 1.2.1.2",
      "product": {
        "name": "Small Business",
        "vendor": {
          "name": "Cisco",
          "scada": false
        }
      }
    },
    {
      "description": "ATA 190 Analog Telephone Adapter (produit en fin de vie)",
      "product": {
        "name": "N/A",
        "vendor": {
          "name": "Cisco",
          "scada": false
        }
      }
    },
    {
      "description": "Cisco Identity Services Engine versions 3.x ant\u00e9rieures \u00e0 3.1",
      "product": {
        "name": "Identity Services Engine",
        "vendor": {
          "name": "Cisco",
          "scada": false
        }
      }
    },
    {
      "description": "ATA 192 Multiplatform Analog Telephone Adapter versions ant\u00e9rieures \u00e0 11.2.1",
      "product": {
        "name": "N/A",
        "vendor": {
          "name": "Cisco",
          "scada": false
        }
      }
    },
    {
      "description": "Cisco AsyncOS pour Cisco WSA versions 14.0.x ant\u00e9rieures \u00e0 14.0.1-014",
      "product": {
        "name": "N/A",
        "vendor": {
          "name": "Cisco",
          "scada": false
        }
      }
    },
    {
      "description": "Cisco AnyConnect Secure Mobility Client pour Linux et Mac OS versions ant\u00e9rieures \u00e0 4.10.03104",
      "product": {
        "name": "N/A",
        "vendor": {
          "name": "Cisco",
          "scada": false
        }
      }
    },
    {
      "description": "ATA 191 Multiplatform Analog Telephone Adapter versions ant\u00e9rieures \u00e0 11.2.1",
      "product": {
        "name": "N/A",
        "vendor": {
          "name": "Cisco",
          "scada": false
        }
      }
    },
    {
      "description": "ATA 191 Analog Telephone Adapter versions ant\u00e9rieures \u00e0 12.0(1)SR4",
      "product": {
        "name": "N/A",
        "vendor": {
          "name": "Cisco",
          "scada": false
        }
      }
    }
  ],
  "affected_systems_content": null,
  "content": "## Solution\n\nSe r\u00e9f\u00e9rer au bulletin de s\u00e9curit\u00e9 de l\u0027\u00e9diteur pour l\u0027obtention des\ncorrectifs (cf. section Documentation).\n",
  "cves": [
    {
      "name": "CVE-2021-34788",
      "url": "https://www.cve.org/CVERecord?id=CVE-2021-34788"
    },
    {
      "name": "CVE-2021-34779",
      "url": "https://www.cve.org/CVERecord?id=CVE-2021-34779"
    },
    {
      "name": "CVE-2021-1594",
      "url": "https://www.cve.org/CVERecord?id=CVE-2021-1594"
    },
    {
      "name": "CVE-2021-34775",
      "url": "https://www.cve.org/CVERecord?id=CVE-2021-34775"
    },
    {
      "name": "CVE-2021-34777",
      "url": "https://www.cve.org/CVERecord?id=CVE-2021-34777"
    },
    {
      "name": "CVE-2021-34780",
      "url": "https://www.cve.org/CVERecord?id=CVE-2021-34780"
    },
    {
      "name": "CVE-2021-34735",
      "url": "https://www.cve.org/CVERecord?id=CVE-2021-34735"
    },
    {
      "name": "CVE-2021-34698",
      "url": "https://www.cve.org/CVERecord?id=CVE-2021-34698"
    },
    {
      "name": "CVE-2021-34710",
      "url": "https://www.cve.org/CVERecord?id=CVE-2021-34710"
    },
    {
      "name": "CVE-2021-34748",
      "url": "https://www.cve.org/CVERecord?id=CVE-2021-34748"
    },
    {
      "name": "CVE-2021-34776",
      "url": "https://www.cve.org/CVERecord?id=CVE-2021-34776"
    },
    {
      "name": "CVE-2021-34778",
      "url": "https://www.cve.org/CVERecord?id=CVE-2021-34778"
    }
  ],
  "links": [],
  "reference": "CERTFR-2021-AVI-761",
  "revisions": [
    {
      "description": "Version initiale",
      "revision_date": "2021-10-07T00:00:00.000000"
    }
  ],
  "risks": [
    {
      "description": "D\u00e9ni de service \u00e0 distance"
    },
    {
      "description": "Ex\u00e9cution de code arbitraire \u00e0 distance"
    },
    {
      "description": "\u00c9l\u00e9vation de privil\u00e8ges"
    }
  ],
  "summary": "De multiples vuln\u00e9rabilit\u00e9s ont \u00e9t\u00e9 d\u00e9couvertes dans les produits Cisco.\nElles permettent \u00e0 un attaquant de provoquer une ex\u00e9cution de code\narbitraire \u00e0 distance, un d\u00e9ni de service \u00e0 distance et une \u00e9l\u00e9vation de\nprivil\u00e8ges.\n",
  "title": "Multiples vuln\u00e9rabilit\u00e9s dans les produits Cisco",
  "vendor_advisories": [
    {
      "published_at": null,
      "title": "Bulletin de s\u00e9curit\u00e9 Cisco cisco-sa-wsa-dos-fmHdKswk du 06 octobre 2021",
      "url": "https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-wsa-dos-fmHdKswk"
    },
    {
      "published_at": null,
      "title": "Bulletin de s\u00e9curit\u00e9 Cisco cisco-sa-ise-priv-esc-UwqPrBM3 du 06 octobre 2021",
      "url": "https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-ise-priv-esc-UwqPrBM3"
    },
    {
      "published_at": null,
      "title": "Bulletin de s\u00e9curit\u00e9 Cisco cisco-sa-ata19x-multivuln-A4J57F3 du 06 octobre 2021",
      "url": "https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-ata19x-multivuln-A4J57F3"
    },
    {
      "published_at": null,
      "title": "Bulletin de s\u00e9curit\u00e9 Cisco cisco-sa-ucsi2-command-inject-CGyC8y2R du 06 octobre 2021",
      "url": "https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-ucsi2-command-inject-CGyC8y2R"
    },
    {
      "published_at": null,
      "title": "Bulletin de s\u00e9curit\u00e9 Cisco cisco-sa-anyconnect-lib-hija-cAFB7x4q du 06 octobre 2021",
      "url": "https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-anyconnect-lib-hija-cAFB7x4q"
    },
    {
      "published_at": null,
      "title": "Bulletin de s\u00e9curit\u00e9 Cisco cisco-sa-sb220-lldp-multivuls-mVRUtQ8T du 06 octobre 2021",
      "url": "https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-sb220-lldp-multivuls-mVRUtQ8T"
    }
  ]
}

{
  "configurations": [
    {
      "nodes": [
        {
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:o:cisco:asyncos:*:*:*:*:*:*:*:*",
              "matchCriteriaId": "706A904F-2F7D-41E2-AA14-4A6F2E089507",
              "versionEndExcluding": "12.0.3-005",
              "versionStartIncluding": "12.0",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:o:cisco:asyncos:*:*:*:*:*:*:*:*",
              "matchCriteriaId": "D31D5B5B-F0AC-4F6F-82CC-59F2256C94EB",
              "versionEndExcluding": "12.5.2-007",
              "versionStartIncluding": "12.5",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:o:cisco:asyncos:*:*:*:*:*:*:*:*",
              "matchCriteriaId": "DF9EB09B-AF00-487B-9AB3-5ECB2E700260",
              "versionEndExcluding": "14.0.1-014",
              "versionStartIncluding": "14.0",
              "vulnerable": true
            }
          ],
          "negate": false,
          "operator": "OR"
        },
        {
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:h:cisco:web_security_appliance_s170:-:*:*:*:*:*:*:*",
              "matchCriteriaId": "E401F29A-026F-4097-B513-47911CB3AA09",
              "vulnerable": false
            },
            {
              "criteria": "cpe:2.3:h:cisco:web_security_appliance_s190:-:*:*:*:*:*:*:*",
              "matchCriteriaId": "AA3B097B-F689-4886-A0C6-B71ECAD783CF",
              "vulnerable": false
            },
            {
              "criteria": "cpe:2.3:h:cisco:web_security_appliance_s380:-:*:*:*:*:*:*:*",
              "matchCriteriaId": "23C3AECC-9270-42B5-A36E-208AA0B48D93",
              "vulnerable": false
            },
            {
              "criteria": "cpe:2.3:h:cisco:web_security_appliance_s390:-:*:*:*:*:*:*:*",
              "matchCriteriaId": "5290B9CF-CF7D-4762-B5EE-5DAEA03C6409",
              "vulnerable": false
            },
            {
              "criteria": "cpe:2.3:h:cisco:web_security_appliance_s680:-:*:*:*:*:*:*:*",
              "matchCriteriaId": "BE85462C-079B-4488-AB0E-989D41EB7AFD",
              "vulnerable": false
            },
            {
              "criteria": "cpe:2.3:h:cisco:web_security_appliance_s690:-:*:*:*:*:*:*:*",
              "matchCriteriaId": "48A8E5E8-8361-4BC8-BFA9-CAE4745A9C48",
              "vulnerable": false
            },
            {
              "criteria": "cpe:2.3:h:cisco:web_security_appliance_s690x:-:*:*:*:*:*:*:*",
              "matchCriteriaId": "FBEAFE16-BD4F-4538-9A06-173FB678DB8B",
              "vulnerable": false
            }
          ],
          "negate": false,
          "operator": "OR"
        }
      ],
      "operator": "AND"
    }
  ],
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "A vulnerability in the proxy service of Cisco AsyncOS for Cisco Web Security Appliance (WSA) could allow an unauthenticated, remote attacker to exhaust system memory and cause a denial of service (DoS) condition on an affected device. This vulnerability is due to improper memory management in the proxy service of an affected device. An attacker could exploit this vulnerability by establishing a large number of HTTPS connections to the affected device. A successful exploit could allow the attacker to cause the system to stop processing new connections, which could result in a DoS condition. Note: Manual intervention may be required to recover from this situation."
    },
    {
      "lang": "es",
      "value": "Una vulnerabilidad en el servicio proxy de Cisco AsyncOS para Cisco Web Security Appliance (WSA) podr\u00eda permitir a un atacante remoto no autenticado agotar la memoria del sistema y causar una condici\u00f3n de denegaci\u00f3n de servicio (DoS) en un dispositivo afectado. Esta vulnerabilidad es debido a una administraci\u00f3n inapropiada de la memoria en el servicio proxy de un dispositivo afectado. Un atacante podr\u00eda explotar esta vulnerabilidad al establecer un gran n\u00famero de conexiones HTTPS al dispositivo afectado. Una explotaci\u00f3n con \u00e9xito podr\u00eda permitir al atacante causar que el sistema deje de procesar nuevas conexiones, lo que podr\u00eda resultar en una condici\u00f3n de DoS. Nota: Puede ser necesaria una intervenci\u00f3n manual para recuperarse de esta situaci\u00f3n"
    }
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{
  "document": {
    "acknowledgments": [
      {
        "summary": "This vulnerability was found during the resolution of a Cisco TAC support case."
      }
    ],
    "category": "csaf_security_advisory",
    "csaf_version": "2.0",
    "notes": [
      {
        "category": "summary",
        "text": "A vulnerability in the proxy service of Cisco AsyncOS for Cisco Web Security Appliance (WSA) could allow an unauthenticated, remote attacker to exhaust system memory and cause a denial of service (DoS) condition on an affected device.\r\n\r\nThis vulnerability is due to improper memory management in the proxy service of an affected device. An attacker could exploit this vulnerability by establishing a large number of HTTPS connections to the affected device. A successful exploit could allow the attacker to cause the system to stop processing new connections, which could result in a DoS condition.\r\n\r\nNote: Manual intervention may be required to recover from this situation.\r\n\r\nCisco has released software updates that address this vulnerability. There are workarounds that address this vulnerability.\r\n\r\n",
        "title": "Summary"
      },
      {
        "category": "general",
        "text": "This vulnerability affects Cisco AsyncOS for Cisco WSA, both virtual and hardware appliances.\r\n\r\nFor information about which Cisco software releases are vulnerable, see the Fixed Software [\"#fs\"] section of this advisory.",
        "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\nEmail Security Appliance, both virtual and hardware appliances\r\nSecure Email and Web Manager, both virtual and hardware appliances",
        "title": "Products Confirmed Not Vulnerable"
      },
      {
        "category": "general",
        "text": "Use the grep CLI command and search in the proxylogs for the string Accept handlers have been Disabled. If any line shows up in the terminal, the proxy process may be saturated and a device reload may be required to recover the normal functions.\r\n\r\nAlternatively, obtain the Proxy Track Stats logs from the Cisco WSA (through Secure Copy Protocol or FTP) and search for an INFO line like the one in this example: INFO: MALLOC\u0027ed memory size 361150328 MMAP\u0027ed memory 448790528. If the first number (361150328 in this case), keeps increasing up to the second number (448790528), the device memory allocation is approaching its limit, and a device reload is necessary.",
        "title": "Indicators of Compromise"
      },
      {
        "category": "general",
        "text": "There is a workaround that addresses this vulnerability. Customers can use the hidden diagnostic \u003e PROXY \u003e KICK command to restart the proxy process and reclaim memory.\r\n\r\nWhile this workaround has been deployed and was proven successful in a test environment, customers should determine the applicability and effectiveness in their own environment and under their own use conditions. Customers should be aware that any workaround or mitigation that is implemented may negatively impact the functionality or performance of their network based on intrinsic customer deployment scenarios and limitations. Customers should not deploy any workarounds or mitigations before first evaluating the applicability to their own environment and any impact to such environment.",
        "title": "Workarounds"
      },
      {
        "category": "general",
        "text": "Cisco has released free software updates that address the vulnerability described in this advisory. Customers may only install and expect support for software versions and feature sets for which they have purchased a license. By installing, downloading, accessing, or otherwise using such software upgrades, customers agree to follow the terms of the Cisco software license:\r\nhttps://www.cisco.com/c/en/us/products/end-user-license-agreement.html [\"https://www.cisco.com/c/en/us/products/end-user-license-agreement.html\"]\r\n\r\nAdditionally, customers may only download software for which they have a valid license, procured from Cisco directly, or through a Cisco authorized reseller or partner. In most cases this will be a maintenance upgrade to software that was previously purchased. Free security software updates do not entitle customers to a new software license, additional software feature sets, or major revision upgrades.\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 page [\"https://www.cisco.com/go/psirt\"], 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  Customers Without Service Contracts\r\nCustomers who purchase directly from Cisco but do not hold a Cisco service contract and customers who make purchases through third-party vendors but are unsuccessful in obtaining fixed software through their point of sale should obtain upgrades by contacting the Cisco TAC: https://www.cisco.com/c/en/us/support/web/tsd-cisco-worldwide-contacts.html [\"https://www.cisco.com/c/en/us/support/web/tsd-cisco-worldwide-contacts.html\"]\r\n\r\nCustomers should have the product serial number available and be prepared to provide the URL of this advisory as evidence of entitlement to a free upgrade.\r\n      Fixed Releases\r\nIn the following table(s), the left column lists Cisco software releases. The right column indicates whether a release is affected by the vulnerability described in this advisory and the first release that includes the fix for this vulnerability. Customers are advised to upgrade to an appropriate fixed software release as indicated in this section.\r\n        Cisco AsyncOS for Cisco WSA Release  First Fixed Release          11.5  Not affected      11.8  Not affected      12.0  12.0.3-005      12.5  12.5.2-011      14.0  14.0.1-053\r\nTo update Cisco WSA devices over the network, complete the following steps:\r\n\r\nChoose System Administration \u003e System Upgrade.\r\nClick Upgrade Options.\r\nChoose the option to Download and Install or, for an ESA, Download the upgrade.\r\nChoose the desired release.\r\nIn the Upgrade Preparation area, choose the appropriate options.\r\nClick Proceed to begin the upgrade.\r\n\r\nA progress bar displays the status of the upgrade. After the upgrade is complete, the device will reboot.\r\n\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 [\"https://sec.cloudapps.cisco.com/security/center/resources/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 not aware of any public announcements or malicious use of the vulnerability that is described in this advisory.",
        "title": "Exploitation and Public Announcements"
      },
      {
        "category": "general",
        "text": "This vulnerability was found during the resolution of a Cisco TAC support case.",
        "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": {
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        "url": "https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-wsa-dos-fmHdKswk"
      },
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        "url": "https://www.cisco.com/c/en/us/support/web/tsd-cisco-worldwide-contacts.html"
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    "title": "Cisco Web Security Appliance Proxy Service Denial of Service Vulnerability",
    "tracking": {
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      "generator": {
        "date": "2024-05-10T23:10:00+00:00",
        "engine": {
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          "summary": "Initial public release."
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        }
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  "vulnerabilities": [
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          "text": "CSCvw11261"
        },
        {
          "system_name": "Cisco Bug ID",
          "text": "CSCvz00720"
        }
      ],
      "notes": [
        {
          "category": "other",
          "text": "Complete.",
          "title": "Affected Product Comprehensiveness"
        }
      ],
      "product_status": {
        "known_affected": [
          "CSAFPID-189789"
        ]
      },
      "remediations": [
        {
          "category": "vendor_fix",
          "details": "Cisco has released software updates that address this vulnerability.",
          "product_ids": [
            "CSAFPID-189789"
          ],
          "url": "https://software.cisco.com"
        },
        {
          "category": "workaround",
          "details": "There is a workaround that addresses this vulnerability. Customers can use the hidden diagnostic \u003e PROXY \u003e KICK command to restart the proxy process and reclaim memory.\r\n\r\nWhile this workaround has been deployed and was proven successful in a test environment, customers should determine the applicability and effectiveness in their own environment and under their own use conditions. Customers should be aware that any workaround or mitigation that is implemented may negatively impact the functionality or performance of their network based on intrinsic customer deployment scenarios and limitations. Customers should not deploy any workarounds or mitigations before first evaluating the applicability to their own environment and any impact to such environment.",
          "product_ids": [
            "CSAFPID-189789"
          ]
        }
      ],
      "scores": [
        {
          "cvss_v3": {
            "baseScore": 8.6,
            "baseSeverity": "HIGH",
            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H",
            "version": "3.1"
          },
          "products": [
            "CSAFPID-189789"
          ]
        }
      ],
      "title": "Cisco Web Security Appliance Denial of Service Vulnerability"
    }
  ]
}