CVE-2023-28798 Out-of-bounds write to heap in pacparser

What is CVE-2023-28798?

CVE-2023-28798 is a medium-severity memory corruption vulnerability in Zscaler Client Connector, published on 2 May 2024. An attacker can exploit it over the internet without logging in, with no action from the victim.

Official description

An out-of-bounds write to heap in the pacparser library on Zscaler Client Connector on Mac may lead to arbitrary code execution.

Weakness: CWE-787, CWE-122

Which versions are affected by CVE-2023-28798?

It affects 1 product.

Products include Zscaler Client Connector.

How do I fix CVE-2023-28798?

No fix has been published for CVE-2023-28798 yet. Limit exposure of the affected software until one is available.

Upgrade to the fixed version. Memory-safe languages, compiler hardening and fuzzing prevent most new cases. More about Memory corruption.

Is CVE-2023-28798 being exploited?

There is no known exploitation of CVE-2023-28798 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-wxgw-4g8w-q999.