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CVE-2023-28802— Disable Zscaler using machine tunnel restart

Quick assessment

Affected
Zscaler Client Connector
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

Zscaler Client Connector是zscaler的一个应用软件。一种安装在设备上的应用程序，可确保互联网流量和对组织内部应用程序的访问是安全的并符合组织的政策，即使不在公司网络时。 Zscaler Client Connector 4.2.0.149之前版本存在安全漏洞，该漏洞源于允许经过身份验证的攻击者通过中断Zscaler Diagnostics的服务重新启动来禁用ZIA/ZPA。

CVSS 4.9 · Medium EPSS 0.23% · P12

Possible ATT&CK Techniques 1 AI

T1562.001
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I. Basic Information for CVE-2023-28802

Vulnerability Information
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Vulnerability Title
Disable Zscaler using machine tunnel restart
Source: CVE Program / CVE List V5
Vulnerability Description
An Improper Validation of Integrity Check Value in Zscaler Client Connector on Windows allows an authenticated user to disable ZIA/ZPA by interrupting the service restart from Zscaler Diagnostics. This issue affects Client Connector: before 4.2.0.149.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:P/AC:L/PR:L/UI:N/S:U/C:H/I:L/A:N
Source: CVE Program / CVE List V5
Vulnerability Type
完整性检查值验证不恰当
Source: CVE Program / CVE List V5
Vulnerability Title
Zscaler Client Connector 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Zscaler Client Connector是zscaler的一个应用软件。一种安装在设备上的应用程序，可确保互联网流量和对组织内部应用程序的访问是安全的并符合组织的政策，即使不在公司网络时。 Zscaler Client Connector 4.2.0.149之前版本存在安全漏洞，该漏洞源于允许经过身份验证的攻击者通过中断Zscaler Diagnostics的服务重新启动来禁用ZIA/ZPA。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
Zscaler Client Connector 0 ~ 4.2.0.149 -

II. Public POCs for CVE-2023-28802

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III. Intelligence Information for CVE-2023-28802

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Other References for CVE-2023-28802 (1)

IV. Related Vulnerabilities

Same product: Client Connector
Same vendor: Zscaler
Same weakness: CWE-354

V. Comments for CVE-2023-28802

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