CVE-2023-41971 Windows ZCC Upgrade DoS And Privilege Escalation Through RPC Control

Medium 5.3 Published 2 May 2024 Updated 6 Aug 2024

A local attacker can overwrite system files via improper link resolution during upgrade, leading to privilege escalation or denial of service.

Exploited in the wild: Not known
Login needed: Any signed-in user
Attackable: Local or same network only
Victim action needed: Not needed
Fix: None listed

What is CVE-2023-41971?

CVE-2023-41971 is a medium-severity path traversal vulnerability in Zscaler Client Connector, published on 2 May 2024. It can only be exploited from the same machine or local network, with no action from the victim.

Official description

An Improper Link Resolution Before File Access ('Link Following') vulnerability in Zscaler Client Connector on Windows allows a system file to be overwritten.This issue affects Client Connector on Windows: before 3.7.

Weakness: CWE-59

Which versions are affected by CVE-2023-41971?

It affects 1 product.

Products include Zscaler Client Connector.

How do I fix CVE-2023-41971?

No fix has been published for CVE-2023-41971 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-2023-41971 being exploited?

There is no known exploitation of CVE-2023-41971 in the wild and no public exploit code.

Sources

Also known as GHSA-h695-7mxq-qwxc.