Skip to content
OpenAdvisories
High WID-SEC-2023-2733 12 CVEs

ZScaler Client Connector: Mehrere Schwachstellen

Published Oct 23, 2023 · Updated Oct 23, 2023 · de-DE

Vendor: Zscaler Product: Client Connector Product: Client Connector < 1.3.1.6 Product: Client Connector < 1.4.0.105 Product: Client Connector < 3.4.0.124 Product: Client Connector < 3.6 Product: Client Connector < 3.7 Product: Client Connector < 3.9 Product: Client Connector < 4.1 Product: Client Connector windows < 3.6 Platform: Linux Platform: macOS Platform: Windows

Summary

Ein Angreifer kann mehrere Schwachstellen in ZScaler Client Connector ausnutzen, um beliebigen Code auszuführen, Sicherheitsmaßnahmen zu umgehen, einen Denial-of-Service-Zustand auszulösen, Dateien zu manipulieren oder seine Privilegien zu erweitern.

Product

Zscaler Client Connector, ehemals Zscaler App (Z App) führt Sicherheits- und Richtlinienkontrollen auf verwalteten Endgeräten durch.

Vulnerabilities 12

  • High 8.2
    CVE-2023-28804

    Linux ZCC allows unsigned updates, allowing elevated Code Execution

    An Improper Verification of Cryptographic Signature vulnerability in Zscaler Client Connector on Linux allows replacing binaries.This issue affects Linux Client Connector: before 1.4.0.105

    Zscaler Client Connector
  • High 7.8
    CVE-2021-26738

    Privilege Escalation for ZCC macOS via PATH Variable

    Zscaler Client Connector for macOS prior to 3.7 had an unquoted search path vulnerability via the PATH variable. A local adversary may be able to execute code with root privileges.

    Zscaler Client Connector
  • High 7.8
    CVE-2023-28793

    Heap Based Buffer Overflow in Library

    Buffer overflow vulnerability in the signelf library used by Zscaler Client Connector on Linux allows Code Injection. This issue affects Zscaler Client Connector for Linux: before 1.3.1.6.

    Zscaler Client Connector
  • High 7.8
    CVE-2023-28795

    Client IPC validation bypass

    Origin Validation Error vulnerability in Zscaler Client Connector on Linux allows Inclusion of Code in Existing Process. This issue affects Zscaler Client Connector for Linux: before 1.3.1.6.

    Zscaler Client Connector
  • High 7.1
    CVE-2023-28796

    IPC Bypass Through PLT Section in ELF

    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.

    Zscaler Client Connector
  • Medium 6.7
    CVE-2021-26735

    Untrusted Search Path While Executing REG DELETE by Uninstaller

    The Zscaler Client Connector Installer and Unsintallers for Windows prior to 3.6 had an unquoted search path vulnerability. A local adversary may be able to execute code with SYSTEM privileges.

    Zscaler Client Connector
  • Medium 6.7
    CVE-2021-26736

    ZApp Installer Privilege Escalation Vulnerabilities

    Multiple vulnerabilities in the Zscaler Client Connector Installer and Uninstaller for Windows prior to 3.6 allowed execution of binaries from a low privileged path. A local adversary may be able to execute code with SYSTEM privileges.

    Zscaler Client Connector
  • Medium 6.7
    CVE-2023-28805

    ZCC on Linux privilege escalation

    An Improper Input Validation vulnerability in Zscaler Client Connector on Linux allows Privilege Escalation. This issue affects Client Connector: before 1.4.0.105

    Zscaler Client Connector
  • Medium 6.3
    CVE-2023-28797

    LPE using arbitrary file delete with Symlinks

    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.

    Zscaler Client Connector
  • Medium 5.9
    CVE-2023-28803

    Traffic being bypassed by ZCC by configuring synthetic IP range as local network

    An authentication bypass by spoofing of a device with a synthetic IP address is possible in Zscaler Client Connector on Windows, allowing a functionality bypass. This issue affects Client Connector: before 3.9.

    Zscaler Client Connector
  • Medium 5.5
    CVE-2021-26737

    Privilege Escalation Using PID Reuse in ZCC macOS

    The Zscaler Client Connector for macOS prior to 3.6 did not sufficiently validate RPC clients. A local adversary without sufficient privileges may be able to shutdown the Zscaler tunnel by exploiting a race condition.

    Zscaler Client Connector
  • Medium 4.4
    CVE-2021-26734

    Junction Delete leading to elevation of privilege

    Zscaler Client Connector Installer on Windows before version 3.4.0.124 improperly handled directory junctions during uninstallation. A local adversary may be able to delete folders in an elevated context.

    Zscaler Client Connector

Revision history

  1. #1

    Initiale Fassung

References