CVE-2023-28796— IPC Bypass Through PLT Section in ELF
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I. Basic Information for CVE-2023-28796
Vulnerability Information
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Vulnerability Title
IPC Bypass Through PLT Section in ELF
Source: NVD (National Vulnerability Database)
Vulnerability Description
Improper Verification of Cryptographic Signature vulnerability in Zscaler Client Connector on Linux allows Code Injection. This issue affects Zscaler Client Connector for Linux: before 1.3.1.6.
Source: NVD (National Vulnerability Database)
CVSS Information
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:H
Source: NVD (National Vulnerability Database)
Vulnerability Type
对生成代码的控制不恰当(代码注入)
Source: NVD (National Vulnerability Database)
Vulnerability Title
Zscaler Client Connector 数据伪造问题漏洞
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 1.3.1.6之前版本存在安全漏洞，该漏洞源于加密签名验证不正确，导致存在代码注入漏洞。
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 ~ 1.3.1.6 | - |
II. Public POCs for CVE-2023-28796
| # | 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-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-2023-28797 | 6.3 MEDIUM | LPE using arbitrary file delete with Symlinks |
| 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-94
- CVE-2021-47939
Evolution CMS 3.1.6 Authenticated Remote Code Execution via - CVE-2021-47938
ImpressCMS 1.4.2 Remote Code Execution via Autotasks - CVE-2021-47935
Sentry 8.2.0 Remote Code Execution via Pickle Deserializatio - CVE-2022-50944
Aero CMS 0.0.1 PHP Code Injection via posts.php - CVE-2026-8211
codelibs Fess JSP File AdminDesignAction.java update code in
V. Comments for CVE-2023-28796
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