CVE-2023-20178

2023-06-2800:00:00

cisco

www.cve.org

cisco

anyconnect

secure client

vulnerability

update process

windows

privileges

7.8 High

CVSS3

Attack Vector

LOCAL

Attack Complexity

LOW

Privileges Required

LOW

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

HIGH

Integrity Impact

HIGH

Availability Impact

HIGH

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

0.001 Low

EPSS

Percentile

25.8%

JSON

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.

CNA Affected

[
  {
    "vendor": "Cisco",
    "product": "Cisco Secure Client",
    "versions": [
      {
        "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",
        "status": "affected"
      }
    ]
  }
]