CVE-2023-41971— Windows ZCC Upgrade DoS And Privilege Escalation Through RPC Control
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I. Basic Information for CVE-2023-41971
Vulnerability Information
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Vulnerability Title
Windows ZCC Upgrade DoS And Privilege Escalation Through RPC Control
Source: NVD (National Vulnerability Database)
Vulnerability Description
An Improper Link Resolution Before File Access ('Link Following') vulnerability in Zscaler Client Connector on Windows allows a system file to be overwritten.This issue affects Client Connector on Windows: before 3.7.
Source: NVD (National Vulnerability Database)
CVSS Information
CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:L/A:H
Source: NVD (National Vulnerability Database)
Vulnerability Type
在文件访问前对链接解析不恰当(链接跟随)
Source: NVD (National Vulnerability Database)
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 3.7之前版本存在安全漏洞，该漏洞源于文件访问前链接解析不正确，允许覆盖系统文件。
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 ~ 3.7 | - |
II. Public POCs for CVE-2023-41971
| # | POC Description | Source Link | Shenlong Link |
|---|
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Same Patch Batch · Zscaler · 2024-05-02 · 6 CVEs total
| CVE-2024-23459 | 7.1 HIGH | Multiple Arbitrary Creates/Overwrites by link following |
| CVE-2023-28798 | 6.5 MEDIUM | Out-of-bounds write to heap in pacparser |
| CVE-2023-41970 | 6.0 MEDIUM | Repair App local code execution with arbitrary privileges |
| CVE-2024-23461 | 4.2 MEDIUM | ZCC macOS Upgrade ZIP Bomb DoS |
| CVE-2024-23462 | 3.3 LOW | ZCC Mac validinstaller file integrity check missing |
IV. Related Vulnerabilities
Same product: Client Connector
- CVE-2024-31127
MacOS Zscaler Client Connector Local Privilege Escalation - CVE-2023-28806
Signature validation error in DLL allows disabling anti-tamp - CVE-2024-23483
Local Privilege Escalation via lack of input validation - CVE-2024-23460
Incorrect signature validation of package - CVE-2024-23464
Zscaler bypass with administrative privileges on Windows
Same weakness: CWE-59
- CVE-2021-47949
CyberPanel 2.1 Authenticated Remote Code Execution via Symli - CVE-2026-41882
JetBrains IntelliJ IDEA 后置链接漏洞 - CVE-2026-27105
Dell Alienware Purchased Apps 后置链接漏洞 - CVE-2026-5161
Improper Authentication in TUBITAK BILGEM's Pardus About - CVE-2026-41397
OpenClaw < 2026.3.31 - Sandbox Escape via Unrestricted File
V. Comments for CVE-2023-41971
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