« Volver al listado

CVE-2023-20178

Estado: ModificadaAlta (7.8)—

A vulnerability in the client update process of Cisco AnyConnect Secure Mobility Client Software for Windows and Cisco Secure Client Software for Windows could allow a low-privileged, authenticated, local attacker to elevate privileges to those of SYSTEM. The client update process is executed after a successful VPN connection is established.

This vulnerability exists because improper permissions are assigned to a temporary directory that is created during the update process. An attacker could exploit this vulnerability by abusing a specific function of the Windows installer process. A successful exploit could allow the attacker to execute code with SYSTEM privileges.

CVSS

Probabilidad de explotación (EPSS)

EPSS (Exploit Prediction Scoring System, de FIRST) estima la probabilidad de que una vulnerabilidad sea explotada en 30 días. Complementa a CVSS (impacto) y a CISA KEV (explotación confirmada).

Tecnologías afectadas (2)

Cisco — Anyconnect Secure Mobility ClientCisco — Secure Client

CWE

Referencias

JSON original (NVD)

Mostrar
{
  "id": "CVE-2023-20178",
  "cveTags": [],
  "metrics": {
    "cvssMetricV31": [
      {
        "type": "Secondary",
        "source": "psirt@cisco.com",
        "cvssData": {
          "scope": "UNCHANGED",
          "version": "3.1",
          "baseScore": 7.8,
          "attackVector": "LOCAL",
          "baseSeverity": "HIGH",
          "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
          "integrityImpact": "HIGH",
          "userInteraction": "NONE",
          "attackComplexity": "LOW",
          "availabilityImpact": "HIGH",
          "privilegesRequired": "LOW",
          "confidentialityImpact": "HIGH"
        },
        "impactScore": 5.9,
        "exploitabilityScore": 1.8
      },
      {
        "type": "Primary",
        "source": "nvd@nist.gov",
        "cvssData": {
          "scope": "UNCHANGED",
          "version": "3.1",
          "baseScore": 7.8,
          "attackVector": "LOCAL",
          "baseSeverity": "HIGH",
          "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
          "integrityImpact": "HIGH",
          "userInteraction": "NONE",
          "attackComplexity": "LOW",
          "availabilityImpact": "HIGH",
          "privilegesRequired": "LOW",
          "confidentialityImpact": "HIGH"
        },
        "impactScore": 5.9,
        "exploitabilityScore": 1.8
      }
    ]
  },
  "affected": [
    {
      "source": "psirt@cisco.com",
      "affectedData": [
        {
          "vendor": "Cisco",
          "product": "Cisco Secure Client",
          "versions": [
            {
              "status": "affected",
              "version": "4.9.00086"
            },
            {
              "status": "affected",
              "version": "4.9.01095"
            },
            {
              "status": "affected",
              "version": "4.9.02028"
            },
            {
              "status": "affected",
              "version": "4.9.03047"
            },
            {
              "status": "affected",
              "version": "4.9.03049"
            },
            {
              "status": "affected",
              "version": "4.9.04043"
            },
            {
              "status": "affected",
              "version": "4.9.04053"
            },
            {
              "status": "affected",
              "version": "4.9.05042"
            },
            {
              "status": "affected",
              "version": "4.9.06037"
            },
            {
              "status": "affected",
              "version": "4.10.00093"
            },
            {
              "status": "affected",
              "version": "4.10.01075"
            },
            {
              "status": "affected",
              "version": "4.10.02086"
            },
            {
              "status": "affected",
              "version": "4.10.03104"
            },
            {
              "status": "affected",
              "version": "4.10.04065"
            },
            {
              "status": "affected",
              "version": "4.10.04071"
            },
            {
              "status": "affected",
              "version": "4.10.05085"
            },
            {
              "status": "affected",
              "version": "4.10.05095"
            },
            {
              "status": "affected",
              "version": "4.10.05111"
            },
            {
              "status": "affected",
              "version": "4.10.06079"
            },
            {
              "status": "affected",
              "version": "4.10.06090"
            },
            {
              "status": "affected",
              "version": "5.0.00238"
            },
            {
              "status": "affected",
              "version": "5.0.00529"
            },
            {
              "status": "affected",
              "version": "5.0.00556"
            },
            {
              "status": "affected",
              "version": "5.0.01242"
            }
          ]
        }
      ]
    }
  ],
  "published": "2023-06-28T15:15:09.880",
  "references": [
    {
      "url": "https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-ac-csc-privesc-wx4U4Kw",
      "tags": [
        "Vendor Advisory"
      ],
      "source": "psirt@cisco.com"
    },
    {
      "url": "https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-ac-csc-privesc-wx4U4Kw",
      "tags": [
        "Vendor Advisory"
      ],
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    }
  ],
  "vulnStatus": "Modified",
  "weaknesses": [
    {
      "type": "Secondary",
      "source": "psirt@cisco.com",
      "description": [
        {
          "lang": "en",
          "value": "CWE-276"
        }
      ]
    },
    {
      "type": "Primary",
      "source": "nvd@nist.gov",
      "description": [
        {
          "lang": "en",
          "value": "CWE-276"
        }
      ]
    }
  ],
  "descriptions": [
    {
      "lang": "en",
      "value": "A vulnerability in the client update process of Cisco AnyConnect Secure Mobility Client Software for Windows and Cisco Secure Client Software for Windows could allow a low-privileged, authenticated, local attacker to elevate privileges to those of SYSTEM. The client update process is executed after a successful VPN connection is established.\r\n\r This vulnerability exists because improper permissions are assigned to a temporary directory that is created during the update process. An attacker could exploit this vulnerability by abusing a specific function of the Windows installer process. A successful exploit could allow the attacker to execute code with SYSTEM privileges."
    }
  ],
  "lastModified": "2026-06-17T05:29:43.550",
  "configurations": [
    {
      "nodes": [
        {
          "negate": false,
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:a:cisco:anyconnect_secure_mobility_client:*:*:*:*:*:windows:*:*",
              "vulnerable": true,
              "matchCriteriaId": "9980A481-8A54-475A-B735-0C339FF30314",
              "versionEndExcluding": "4.10.07061"
            },
            {
              "criteria": "cpe:2.3:a:cisco:secure_client:*:*:*:*:*:windows:*:*",
              "vulnerable": true,
              "matchCriteriaId": "7A856448-9BF4-4693-A1EA-3B6C06DB4259",
              "versionEndExcluding": "5.0.02075"
            }
          ],
          "operator": "OR"
        }
      ]
    }
  ],
  "sourceIdentifier": "psirt@cisco.com"
}