CVE-2023-28802 Disable Zscaler using machine tunnel restart

What is CVE-2023-28802?

CVE-2023-28802 is a medium-severity vulnerability in Zscaler Client Connector, published on 21 Nov 2023. It can only be exploited from the same machine or local network, with no action from the victim.

Official description

An Improper Validation of Integrity Check Value in Zscaler Client Connector on Windows allows an authenticated user to disable ZIA/ZPA by interrupting the service restart from Zscaler Diagnostics. This issue affects Client Connector: before 4.2.0.149.

Weakness: CWE-354

Which versions are affected by CVE-2023-28802?

It affects 1 product.

Products include Zscaler Client Connector.

How do I fix CVE-2023-28802?

No fix has been published for CVE-2023-28802 yet. Limit exposure of the affected software until one is available.

Is CVE-2023-28802 being exploited?

There is no known exploitation of CVE-2023-28802 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-67fh-hvmh-rhv8.