FKIE_CVE-2018-0428

Vulnerability from fkie_nvd - Published: 2018-08-15 20:29 - Updated: 2026-06-17 01:30
Severity
6.7 (Medium) - CVSS:3.0/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H
Summary
A vulnerability in the account management subsystem of Cisco Web Security Appliance (WSA) could allow an authenticated, local attacker to elevate privileges to root. The attacker must authenticate with valid administrator credentials. The vulnerability is due to improper implementation of access controls. An attacker could exploit this vulnerability by authenticating to the device as a specific user to gain the information needed to elevate privileges to root in a separate login shell. A successful exploit could allow the attacker to escape the CLI subshell and execute system-level commands on the underlying operating system as root. Cisco Bug IDs: CSCvj93548.
References
psirt@cisco.comhttp://www.securityfocus.com/bid/105104Third Party Advisory, VDB Entry
psirt@cisco.comhttp://www.securitytracker.com/id/1041536Third Party Advisory, VDB Entry
psirt@cisco.comhttps://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20180815-wsa-escalationVendor Advisory
af854a3a-2127-422b-91ae-364da2661108http://www.securityfocus.com/bid/105104Third Party Advisory, VDB Entry
af854a3a-2127-422b-91ae-364da2661108http://www.securitytracker.com/id/1041536Third Party Advisory, VDB Entry
af854a3a-2127-422b-91ae-364da2661108https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20180815-wsa-escalationVendor Advisory
Impacted products
Vendor Product Version
cisco web_security_appliance 11.0.0-fcs-250
cisco web_security_appliance 11.5.0-fcs-000
cisco web_security_appliance wsa10.0.0-959
cisco web_security_appliance wsa10.5.0-fcs-000
To clipboard 

{
  "affected": [
    {
      "affectedData": [
        {
          "product": "Web Security Appliance",
          "vendor": "Cisco Systems, Inc.",
          "versions": [
            {
              "status": "affected",
              "version": "unspecified"
            }
          ]
        }
      ],
      "source": "psirt@cisco.com"
    }
  ],
  "configurations": [
    {
      "nodes": [
        {
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:h:cisco:web_security_appliance:11.0.0-fcs-250:*:*:*:*:*:*:*",
              "matchCriteriaId": "262A7EA1-285A-4427-8DF1-F315D9232236",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:h:cisco:web_security_appliance:11.5.0-fcs-000:*:*:*:*:*:*:*",
              "matchCriteriaId": "CF6150A1-7D0E-4FF1-9026-A90908A94E4C",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:h:cisco:web_security_appliance:wsa10.0.0-959:*:*:*:*:*:*:*",
              "matchCriteriaId": "222F09C2-DB4B-4B0B-B934-C244A02F705E",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:h:cisco:web_security_appliance:wsa10.5.0-fcs-000:*:*:*:*:*:*:*",
              "matchCriteriaId": "0569FA55-6DE3-4A4F-8C9B-A68B1425A860",
              "vulnerable": true
            }
          ],
          "negate": false,
          "operator": "OR"
        }
      ]
    }
  ],
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "A vulnerability in the account management subsystem of Cisco Web Security Appliance (WSA) could allow an authenticated, local attacker to elevate privileges to root. The attacker must authenticate with valid administrator credentials. The vulnerability is due to improper implementation of access controls. An attacker could exploit this vulnerability by authenticating to the device as a specific user to gain the information needed to elevate privileges to root in a separate login shell. A successful exploit could allow the attacker to escape the CLI subshell and execute system-level commands on the underlying operating system as root. Cisco Bug IDs: CSCvj93548."
    },
    {
      "lang": "es",
      "value": "Una vulnerabilidad en el subsistema de gesti\u00f3n de cuentas de Cisco Web Security Appliance (WSA) podr\u00eda permitir que un atacante local autenticado eleve sus privilegios a root. El atacante debe autenticarse con credenciales v\u00e1lidas de administrador. Esta vulnerabilidad se debe a una implementaci\u00f3n de controles de acceso incorrecta. Un atacante podr\u00eda explotar esta vulnerabilidad autentic\u00e1ndose en el dispositivo como un usuario espec\u00edfico para obtener la informaci\u00f3n que necesita para elevar sus privilegios a root en un shell de inicio de sesi\u00f3n separado. Su explotaci\u00f3n con \u00e9xito podr\u00eda permitir que el atacante escape el subshell de la interfaz de l\u00ednea de comandos y ejecute comandos a nivel de sistema en el sistema operativo subyacente como root. Cisco Bug IDs: CSCvj93548."
    }
  ],
  "id": "CVE-2018-0428",
  "lastModified": "2026-06-17T01:30:46.587",
  "metrics": {
    "cvssMetricV2": [
      {
        "acInsufInfo": false,
        "baseSeverity": "HIGH",
        "cvssData": {
          "accessComplexity": "LOW",
          "accessVector": "LOCAL",
          "authentication": "NONE",
          "availabilityImpact": "COMPLETE",
          "baseScore": 7.2,
          "confidentialityImpact": "COMPLETE",
          "integrityImpact": "COMPLETE",
          "vectorString": "AV:L/AC:L/Au:N/C:C/I:C/A:C",
          "version": "2.0"
        },
        "exploitabilityScore": 3.9,
        "impactScore": 10.0,
        "obtainAllPrivilege": false,
        "obtainOtherPrivilege": false,
        "obtainUserPrivilege": false,
        "source": "nvd@nist.gov",
        "type": "Primary",
        "userInteractionRequired": false
      }
    ],
    "cvssMetricV30": [
      {
        "cvssData": {
          "attackComplexity": "LOW",
          "attackVector": "LOCAL",
          "availabilityImpact": "HIGH",
          "baseScore": 6.7,
          "baseSeverity": "MEDIUM",
          "confidentialityImpact": "HIGH",
          "integrityImpact": "HIGH",
          "privilegesRequired": "HIGH",
          "scope": "UNCHANGED",
          "userInteraction": "NONE",
          "vectorString": "CVSS:3.0/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H",
          "version": "3.0"
        },
        "exploitabilityScore": 0.8,
        "impactScore": 5.9,
        "source": "nvd@nist.gov",
        "type": "Primary"
      }
    ],
    "ssvcV203": [
      {
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "ssvcData": {
          "id": "CVE-2018-0428",
          "options": [
            {
              "exploitation": "none"
            },
            {
              "automatable": "no"
            },
            {
              "technicalImpact": "total"
            }
          ],
          "role": "CISA Coordinator",
          "timestamp": "2024-11-25T18:51:54.504042Z",
          "version": "2.0.3"
        }
      }
    ]
  },
  "published": "2018-08-15T20:29:01.360",
  "references": [
    {
      "source": "psirt@cisco.com",
      "tags": [
        "Third Party Advisory",
        "VDB Entry"
      ],
      "url": "http://www.securityfocus.com/bid/105104"
    },
    {
      "source": "psirt@cisco.com",
      "tags": [
        "Third Party Advisory",
        "VDB Entry"
      ],
      "url": "http://www.securitytracker.com/id/1041536"
    },
    {
      "source": "psirt@cisco.com",
      "tags": [
        "Vendor Advisory"
      ],
      "url": "https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20180815-wsa-escalation"
    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "tags": [
        "Third Party Advisory",
        "VDB Entry"
      ],
      "url": "http://www.securityfocus.com/bid/105104"
    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "tags": [
        "Third Party Advisory",
        "VDB Entry"
      ],
      "url": "http://www.securitytracker.com/id/1041536"
    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "tags": [
        "Vendor Advisory"
      ],
      "url": "https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20180815-wsa-escalation"
    }
  ],
  "sourceIdentifier": "psirt@cisco.com",
  "vulnStatus": "Modified",
  "weaknesses": [
    {
      "description": [
        {
          "lang": "en",
          "value": "CWE-284"
        }
      ],
      "source": "psirt@cisco.com",
      "type": "Secondary"
    },
    {
      "description": [
        {
          "lang": "en",
          "value": "CWE-269"
        }
      ],
      "source": "nvd@nist.gov",
      "type": "Primary"
    }
  ]
}



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