CVE-2023-28804 Linux ZCC allows unsigned updates, allowing elevated Code Execution

What is CVE-2023-28804?

CVE-2023-28804 is a high-severity vulnerability in Zscaler Client Connector, published on 23 Oct 2023. An attacker can exploit it over the internet without logging in, with no action from the victim.

Official description

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

Weakness: CWE-347

Which versions are affected by CVE-2023-28804?

It affects 1 product.

Products include Zscaler Client Connector.

How do I fix CVE-2023-28804?

No fix has been published for CVE-2023-28804 yet. Limit exposure of the affected software until one is available.

Is CVE-2023-28804 being exploited?

There is no known exploitation of CVE-2023-28804 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-2023-28799 Open redirect in Client Connector High 8.2
• CVE-2023-28800 Output encoding missing in redrurl parameter High 8.1
• CVE-2024-23456 Signature validation issue leads to Anti-Tampering bypass High 7.8

Sources

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

Also known as GHSA-h7x8-97pc-7qrv.