GSD-2019-12706

Vulnerability from gsd - Updated: 2023-12-13 01:23
Details
A vulnerability in the Sender Policy Framework (SPF) functionality of Cisco AsyncOS Software for Cisco Email Security Appliance (ESA) could allow an unauthenticated, remote attacker to bypass the configured user filters on an affected device. The vulnerability exists because the affected software insufficiently validates certain incoming SPF messages. An attacker could exploit this vulnerability by sending a custom SPF packet to an affected device. A successful exploit could allow the attacker to bypass the configured header filters, which could allow malicious content to pass through the device.
Aliases
Aliases
CVE-2019-12706
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{
  "GSD": {
    "alias": "CVE-2019-12706",
    "description": "A vulnerability in the Sender Policy Framework (SPF) functionality of Cisco AsyncOS Software for Cisco Email Security Appliance (ESA) could allow an unauthenticated, remote attacker to bypass the configured user filters on an affected device. The vulnerability exists because the affected software insufficiently validates certain incoming SPF messages. An attacker could exploit this vulnerability by sending a custom SPF packet to an affected device. A successful exploit could allow the attacker to bypass the configured header filters, which could allow malicious content to pass through the device.",
    "id": "GSD-2019-12706"
  },
  "gsd": {
    "metadata": {
      "exploitCode": "unknown",
      "remediation": "unknown",
      "reportConfidence": "confirmed",
      "type": "vulnerability"
    },
    "osvSchema": {
      "aliases": [
        "CVE-2019-12706"
      ],
      "details": "A vulnerability in the Sender Policy Framework (SPF) functionality of Cisco AsyncOS Software for Cisco Email Security Appliance (ESA) could allow an unauthenticated, remote attacker to bypass the configured user filters on an affected device. The vulnerability exists because the affected software insufficiently validates certain incoming SPF messages. An attacker could exploit this vulnerability by sending a custom SPF packet to an affected device. A successful exploit could allow the attacker to bypass the configured header filters, which could allow malicious content to pass through the device.",
      "id": "GSD-2019-12706",
      "modified": "2023-12-13T01:23:43.545824Z",
      "schema_version": "1.4.0"
    }
  },
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        "ASSIGNER": "psirt@cisco.com",
        "DATE_PUBLIC": "2019-10-02T16:00:00-0700",
        "ID": "CVE-2019-12706",
        "STATE": "PUBLIC",
        "TITLE": "Cisco Email Security Appliance Filter Bypass Vulnerability"
      },
      "affects": {
        "vendor": {
          "vendor_data": [
            {
              "product": {
                "product_data": [
                  {
                    "product_name": "Cisco Email Security Appliance (ESA) ",
                    "version": {
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                        {
                          "affected": "\u003c",
                          "version_value": "n/a"
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            "value": "A vulnerability in the Sender Policy Framework (SPF) functionality of Cisco AsyncOS Software for Cisco Email Security Appliance (ESA) could allow an unauthenticated, remote attacker to bypass the configured user filters on an affected device. The vulnerability exists because the affected software insufficiently validates certain incoming SPF messages. An attacker could exploit this vulnerability by sending a custom SPF packet to an affected device. A successful exploit could allow the attacker to bypass the configured header filters, which could allow malicious content to pass through the device."
          }
        ]
      },
      "exploit": [
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          "value": "The Cisco Product Security Incident Response Team (PSIRT) is not aware of any public announcements or malicious use of the vulnerability that is described in this advisory. "
        }
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      "impact": {
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          "baseScore": "6.5",
          "vectorString": "CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N ",
          "version": "3.0"
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                "value": "CWE-20"
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        "reference_data": [
          {
            "name": "20191002 Cisco Email Security Appliance Filter Bypass Vulnerability",
            "refsource": "CISCO",
            "url": "https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20191002-esa-bypass"
          }
        ]
      },
      "source": {
        "advisory": "cisco-sa-20191002-esa-bypass",
        "defect": [
          [
            "CSCvq35034"
          ]
        ],
        "discovery": "INTERNAL"
      }
    },
    "nvd.nist.gov": {
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                "cpe_name": [],
                "versionEndExcluding": "13.5.0",
                "vulnerable": true
              }
            ],
            "operator": "OR"
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      "cve": {
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          "ASSIGNER": "psirt@cisco.com",
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        "data_type": "CVE",
        "data_version": "4.0",
        "description": {
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              "value": "A vulnerability in the Sender Policy Framework (SPF) functionality of Cisco AsyncOS Software for Cisco Email Security Appliance (ESA) could allow an unauthenticated, remote attacker to bypass the configured user filters on an affected device. The vulnerability exists because the affected software insufficiently validates certain incoming SPF messages. An attacker could exploit this vulnerability by sending a custom SPF packet to an affected device. A successful exploit could allow the attacker to bypass the configured header filters, which could allow malicious content to pass through the device."
            }
          ]
        },
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        "references": {
          "reference_data": [
            {
              "name": "20191002 Cisco Email Security Appliance Filter Bypass Vulnerability",
              "refsource": "CISCO",
              "tags": [
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            }
          ]
        }
      },
      "impact": {
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          "acInsufInfo": false,
          "cvssV2": {
            "accessComplexity": "LOW",
            "accessVector": "NETWORK",
            "authentication": "NONE",
            "availabilityImpact": "NONE",
            "baseScore": 5.0,
            "confidentialityImpact": "NONE",
            "integrityImpact": "PARTIAL",
            "vectorString": "AV:N/AC:L/Au:N/C:N/I:P/A:N",
            "version": "2.0"
          },
          "exploitabilityScore": 10.0,
          "impactScore": 2.9,
          "obtainAllPrivilege": false,
          "obtainOtherPrivilege": false,
          "obtainUserPrivilege": false,
          "severity": "MEDIUM",
          "userInteractionRequired": false
        },
        "baseMetricV3": {
          "cvssV3": {
            "attackComplexity": "LOW",
            "attackVector": "NETWORK",
            "availabilityImpact": "NONE",
            "baseScore": 7.5,
            "baseSeverity": "HIGH",
            "confidentialityImpact": "NONE",
            "integrityImpact": "HIGH",
            "privilegesRequired": "NONE",
            "scope": "UNCHANGED",
            "userInteraction": "NONE",
            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N",
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          "impactScore": 3.6
        }
      },
      "lastModifiedDate": "2019-10-10T18:07Z",
      "publishedDate": "2019-10-02T19:15Z"
    }
  }
}


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  • Confirmed: The vulnerability has been validated from an analyst's perspective.
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