gsd-2022-20952
Vulnerability from gsd
Modified
2023-12-13 01:19
Details
A vulnerability in the scanning engines of Cisco AsyncOS Software for Cisco Secure Web Appliance, formerly known as Cisco Web Security Appliance (WSA), could allow an unauthenticated, remote attacker to bypass a configured rule, thereby allowing traffic onto a network that should have been blocked. This vulnerability exists because malformed, encoded traffic is not properly detected. An attacker could exploit this vulnerability by connecting through an affected device to a malicious server and receiving malformed HTTP responses. A successful exploit could allow the attacker to bypass an explicit block rule and receive traffic that should have been rejected by the device.
Aliases
Aliases
CVE-2022-20952


To clipboard 

{
  "GSD": {
    "alias": "CVE-2022-20952",
    "description": "A vulnerability in the scanning engines of Cisco AsyncOS Software for Cisco Secure Web Appliance, formerly known as Cisco Web Security Appliance (WSA), could allow an unauthenticated, remote attacker to bypass a configured rule, thereby allowing traffic onto a network that should have been blocked. This vulnerability exists because malformed, encoded traffic is not properly detected. An attacker could exploit this vulnerability by connecting through an affected device to a malicious server and receiving malformed HTTP responses. A successful exploit could allow the attacker to bypass an explicit block rule and receive traffic that should have been rejected by the device.",
    "id": "GSD-2022-20952"
  },
  "gsd": {
    "metadata": {
      "exploitCode": "unknown",
      "remediation": "unknown",
      "reportConfidence": "confirmed",
      "type": "vulnerability"
    },
    "osvSchema": {
      "aliases": [
        "CVE-2022-20952"
      ],
      "details": "A vulnerability in the scanning engines of Cisco AsyncOS Software for Cisco Secure Web Appliance, formerly known as Cisco Web Security Appliance (WSA), could allow an unauthenticated, remote attacker to bypass a configured rule, thereby allowing traffic onto a network that should have been blocked. This vulnerability exists because malformed, encoded traffic is not properly detected. An attacker could exploit this vulnerability by connecting through an affected device to a malicious server and receiving malformed HTTP responses. A successful exploit could allow the attacker to bypass an explicit block rule and receive traffic that should have been rejected by the device.",
      "id": "GSD-2022-20952",
      "modified": "2023-12-13T01:19:16.527927Z",
      "schema_version": "1.4.0"
    }
  },
  "namespaces": {
    "cve.org": {
      "CVE_data_meta": {
        "ASSIGNER": "psirt@cisco.com",
        "ID": "CVE-2022-20952",
        "STATE": "PUBLIC"
      },
      "affects": {
        "vendor": {
          "vendor_data": [
            {
              "product": {
                "product_data": [
                  {
                    "product_name": "Cisco Secure Web Appliance",
                    "version": {
                      "version_data": [
                        {
                          "version_affected": "=",
                          "version_value": "11.8.0-414"
                        },
                        {
                          "version_affected": "=",
                          "version_value": "11.8.1-023"
                        },
                        {
                          "version_affected": "=",
                          "version_value": "11.8.3-018"
                        },
                        {
                          "version_affected": "=",
                          "version_value": "11.8.3-021"
                        },
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                          "version_affected": "=",
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                          "version_affected": "=",
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                        },
                        {
                          "version_affected": "=",
                          "version_value": "12.5.4-005"
                        },
                        {
                          "version_affected": "=",
                          "version_value": "12.5.5-004"
                        },
                        {
                          "version_affected": "=",
                          "version_value": "14.5.0-498"
                        },
                        {
                          "version_affected": "=",
                          "version_value": "14.0.3-014"
                        },
                        {
                          "version_affected": "=",
                          "version_value": "14.0.2-012"
                        }
                      ]
                    }
                  }
                ]
              },
              "vendor_name": "Cisco"
            }
          ]
        }
      },
      "data_format": "MITRE",
      "data_type": "CVE",
      "data_version": "4.0",
      "description": {
        "description_data": [
          {
            "lang": "eng",
            "value": "A vulnerability in the scanning engines of Cisco AsyncOS Software for Cisco Secure Web Appliance, formerly known as Cisco Web Security Appliance (WSA), could allow an unauthenticated, remote attacker to bypass a configured rule, thereby allowing traffic onto a network that should have been blocked.\r\n\r This vulnerability exists because malformed, encoded traffic is not properly detected. An attacker could exploit this vulnerability by connecting through an affected device to a malicious server and receiving malformed HTTP responses. A successful exploit could allow the attacker to bypass an explicit block rule and receive traffic that should have been rejected by the device."
          }
        ]
      },
      "exploit": [
        {
          "lang": "en",
          "value": "The Cisco Product Security Incident Response Team (PSIRT) is not aware of any public announcements or malicious use of the vulnerabilities that are described in this advisory."
        }
      ],
      "impact": {
        "cvss": [
          {
            "attackComplexity": "LOW",
            "attackVector": "NETWORK",
            "availabilityImpact": "NONE",
            "baseScore": 5.3,
            "baseSeverity": "MEDIUM",
            "confidentialityImpact": "NONE",
            "integrityImpact": "LOW",
            "privilegesRequired": "NONE",
            "scope": "UNCHANGED",
            "userInteraction": "NONE",
            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N",
            "version": "3.1"
          }
        ]
      },
      "problemtype": {
        "problemtype_data": [
          {
            "description": [
              {
                "cweId": "CWE-20",
                "lang": "eng",
                "value": "Improper Input Validation"
              }
            ]
          }
        ]
      },
      "references": {
        "reference_data": [
          {
            "name": "https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-wsa-bypass-bwBfugek",
            "refsource": "MISC",
            "url": "https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-wsa-bypass-bwBfugek"
          }
        ]
      },
      "source": {
        "advisory": "cisco-sa-wsa-bypass-bwBfugek",
        "defects": [
          "CSCwc54898"
        ],
        "discovery": "INTERNAL"
      }
    },
    "nvd.nist.gov": {
      "cve": {
        "configurations": [
          {
            "nodes": [
              {
                "cpeMatch": [
                  {
                    "criteria": "cpe:2.3:o:cisco:asyncos:*:*:*:*:*:*:*:*",
                    "matchCriteriaId": "F123F722-4765-49AE-AFE7-C889F3658C57",
                    "versionEndExcluding": "14.0.4",
                    "versionStartIncluding": "11.8",
                    "vulnerable": true
                  },
                  {
                    "criteria": "cpe:2.3:o:cisco:asyncos:14.5.0:*:*:*:*:*:*:*",
                    "matchCriteriaId": "23EC2FAD-D9BF-450F-989E-ED862E263F4E",
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                ],
                "negate": false,
                "operator": "OR"
              },
              {
                "cpeMatch": [
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                    "vulnerable": false
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                  {
                    "criteria": "cpe:2.3:h:cisco:s395:-:*:*:*:*:*:*:*",
                    "matchCriteriaId": "C6D20279-8176-449A-AF4C-E2C90F370B30",
                    "vulnerable": false
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                  {
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                    "matchCriteriaId": "D9408ADA-7A8F-4528-8236-65713CF642D5",
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                "negate": false,
                "operator": "OR"
              }
            ],
            "operator": "AND"
          }
        ],
        "descriptions": [
          {
            "lang": "en",
            "value": "A vulnerability in the scanning engines of Cisco AsyncOS Software for Cisco Secure Web Appliance, formerly known as Cisco Web Security Appliance (WSA), could allow an unauthenticated, remote attacker to bypass a configured rule, thereby allowing traffic onto a network that should have been blocked.\r\n\r This vulnerability exists because malformed, encoded traffic is not properly detected. An attacker could exploit this vulnerability by connecting through an affected device to a malicious server and receiving malformed HTTP responses. A successful exploit could allow the attacker to bypass an explicit block rule and receive traffic that should have been rejected by the device."
          }
        ],
        "id": "CVE-2022-20952",
        "lastModified": "2024-01-25T17:15:22.127",
        "metrics": {
          "cvssMetricV31": [
            {
              "cvssData": {
                "attackComplexity": "LOW",
                "attackVector": "NETWORK",
                "availabilityImpact": "NONE",
                "baseScore": 5.3,
                "baseSeverity": "MEDIUM",
                "confidentialityImpact": "NONE",
                "integrityImpact": "LOW",
                "privilegesRequired": "NONE",
                "scope": "UNCHANGED",
                "userInteraction": "NONE",
                "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N",
                "version": "3.1"
              },
              "exploitabilityScore": 3.9,
              "impactScore": 1.4,
              "source": "nvd@nist.gov",
              "type": "Primary"
            },
            {
              "cvssData": {
                "attackComplexity": "LOW",
                "attackVector": "NETWORK",
                "availabilityImpact": "NONE",
                "baseScore": 5.3,
                "baseSeverity": "MEDIUM",
                "confidentialityImpact": "NONE",
                "integrityImpact": "LOW",
                "privilegesRequired": "NONE",
                "scope": "UNCHANGED",
                "userInteraction": "NONE",
                "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N",
                "version": "3.1"
              },
              "exploitabilityScore": 3.9,
              "impactScore": 1.4,
              "source": "ykramarz@cisco.com",
              "type": "Secondary"
            }
          ]
        },
        "published": "2023-03-01T08:15:10.270",
        "references": [
          {
            "source": "ykramarz@cisco.com",
            "tags": [
              "Vendor Advisory"
            ],
            "url": "https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-wsa-bypass-bwBfugek"
          }
        ],
        "sourceIdentifier": "ykramarz@cisco.com",
        "vulnStatus": "Modified",
        "weaknesses": [
          {
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              {
                "lang": "en",
                "value": "NVD-CWE-noinfo"
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              }
            ],
            "source": "ykramarz@cisco.com",
            "type": "Secondary"
          }
        ]
      }
    }
  }
}


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