CVE-2023-41973 Lack of input santization on Zscaler Client Connector enables arbitrary code execution

What is CVE-2023-41973?

CVE-2023-41973 is a high-severity path traversal vulnerability in Zscaler Client Connector, published on 26 Mar 2024. It can only be exploited from the same machine or local network, with no action from the victim.

Official description

ZSATray passes the previousInstallerName as a config parameter to TrayManager, and TrayManager constructs the path and appends previousInstallerName to get the full path of the exe. Fixed Version: Win ZApp 4.3.0.121 and later.

Weakness: CWE-22

Which versions are affected by CVE-2023-41973?

It affects 1 product.

Products include Zscaler Client Connector.

How do I fix CVE-2023-41973?

No fix has been published for CVE-2023-41973 yet. Limit exposure of the affected software until one is available.

Upgrade, and resolve every user-supplied path against an allowed base folder before opening it. More about Path traversal.

Is CVE-2023-41973 being exploited?

There is no known exploitation of CVE-2023-41973 in the wild and no public exploit code.

Other vulnerabilities in Zscaler Client Connector

• CVE-2020-11633 Memory corruption in n/a Critical 9.8
• CVE-2024-23463 Anti-Tampering bypass via Repair App functionality High 8.8
• CVE-2023-28804 Linux ZCC allows unsigned updates, allowing elevated Code Execution High 8.2
• CVE-2023-28799 Open redirect in Client Connector High 8.2
• CVE-2023-28800 Output encoding missing in redrurl parameter High 8.1

Sources

• CVE record
• NVD
• OSV
• GitHub advisory
• How this page is made

Also known as GHSA-9q9g-6mgq-4cf7.