CVE-2023-28797— LPE using arbitrary file delete with Symlinks
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I. Basic Information for CVE-2023-28797
Vulnerability Information
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Vulnerability Title
LPE using arbitrary file delete with Symlinks
Source: NVD (National Vulnerability Database)
Vulnerability Description
Zscaler Client Connector for Windows before 4.1 writes/deletes a configuration file inside specific folders on the disk. A malicious user can replace the folder and execute code as a privileged user.
Source: NVD (National Vulnerability Database)
CVSS Information
CVSS:3.1/AV:L/AC:H/PR:L/UI:R/S:U/C:H/I:H/A:L
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 后置链接漏洞
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 4.1之前版本存在安全漏洞，该漏洞源于允许攻击者以特权用户的身份替换文件夹并执行代码。
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 ~ 4.1 | - |
II. Public POCs for CVE-2023-28797
| # | POC Description | Source Link | Shenlong Link |
|---|
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Same Patch Batch · Zscaler · 2023-10-23 · 12 CVEs total
| CVE-2023-28804 | 8.2 HIGH | Linux ZCC allows unsigned updates, allowing elevated Code Execution |
| CVE-2021-26738 | 7.8 HIGH | Privilege Escalation for ZCC macOS via PATH Variable |
| CVE-2023-28793 | 7.8 HIGH | Heap Based Buffer Overflow in Library |
| CVE-2023-28795 | 7.8 HIGH | Client IPC validation bypass |
| CVE-2023-28796 | 7.1 HIGH | IPC Bypass Through PLT Section in ELF |
| CVE-2021-26735 | 6.7 MEDIUM | Untrusted Search Path While Executing REG DELETE by Uninstaller |
| CVE-2021-26736 | 6.7 MEDIUM | ZApp Installer Privilege Escalation Vulnerabilities |
| CVE-2023-28805 | 6.7 MEDIUM | ZCC on Linux privilege escalation |
| CVE-2023-28803 | 5.9 MEDIUM | Traffic being bypassed by ZCC by configuring synthetic IP range as local network |
| CVE-2021-26737 | 5.5 MEDIUM | Privilege Escalation Using PID Reuse in ZCC macOS |
| CVE-2021-26734 | 4.4 MEDIUM | Junction Delete leading to elevation of privilege |
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-2023-28797
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