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CVE-2023-4996— Local privilege escalation

Quick assessment

Affected
Netskope Netskope Client
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.

Netskope是美国Netskope公司的一款应用于云环境的威胁防护网关。 Netskope Client R100及之前版本存在安全漏洞，该漏洞源于Windows ServiceController 调用用户控制代码时，在执行用户控制代码之前未验证与用户关联的权限，攻击者利用该漏洞可以使用特制的软件包禁用 Netskope 客户端。

CVSS 6.6 · Medium EPSS 0.38% · P30

Possible ATT&CK Techniques 1 AI

T1562.001
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I. Basic Information for CVE-2023-4996

Vulnerability Information
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Vulnerability Title
Local privilege escalation
Source: CVE Program / CVE List V5
Vulnerability Description
Netskope was made aware of a security vulnerability in its NSClient product for version 100 & prior where a malicious non-admin user can disable the Netskope client by using a specially-crafted package. The root cause of the problem was a user control code when called by a Windows ServiceController did not validate the permissions associated with the user before executing the user control code. This user control code had permissions to terminate the NSClient service. 
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
权限预留不恰当
Source: CVE Program / CVE List V5
Vulnerability Title
Netskope 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Netskope是美国Netskope公司的一款应用于云环境的威胁防护网关。 Netskope Client R100及之前版本存在安全漏洞，该漏洞源于Windows ServiceController 调用用户控制代码时，在执行用户控制代码之前未验证与用户关联的权限，攻击者利用该漏洞可以使用特制的软件包禁用 Netskope 客户端。
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
Netskope Netskope Client 100 & prior -

II. Public POCs for CVE-2023-4996

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III. Intelligence Information for CVE-2023-4996

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Other References for CVE-2023-4996 (1)

IV. Related Vulnerabilities

Same product: Netskope Client
Same vendor: Netskope
Same weakness: CWE-281

V. Comments for CVE-2023-4996

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