PT-2024-13026 · Zscaler · Win Zapp+3

Published 2024-03-26 · Updated 2024-06-07 · CVE-2023-41973

Positive Technologies (AI Summary)

CVSS v3.1

7.8

High

Base vector

AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Name of the Vulnerable Software and Affected Versions Zscaler Client Connector versions prior to 4.3.0.121

Description The issue arises from ZSATray passing the previousInstallerName as a config parameter to TrayManager. TrayManager then constructs the path and appends previousInstallerName to get the full path of the exe. This can lead to a local privilege escalation.

Recommendations For versions prior to 4.3.0.121, update to Win ZApp 4.3.0.121 or later to resolve the issue. As a temporary workaround, consider restricting access to the TrayManager to minimize the risk of exploitation.

Fix

Path traversal

Weakness Enumeration

CWE-22

Related Identifiers

CVE-2023-41973

Affected Products

Traymanager

Win Zapp

Zsatray

Zscaler Client Connector

References · 7

• https://osv.dev/vulnerability/CVE-2023-41973 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2023-41973 · Security Note
• https://help.zscaler.com/client-connector/client-connector-app-release-summary-2023?applicable_category=Windows&applicable_version=4.3.0.121&deployment_date=2023-09-01&id=1463196 · Note
• https://twitter.com/inbbupdates/status/1799145353591091688 · Twitter Post
• https://twitter.com/CVEnew/status/1772632289840603364 · Twitter Post
• https://twitter.com/violenttestpen/status/1772834151160488421 · Twitter Post
• https://twitter.com/VulmonFeeds/status/1772661863697756297 · Twitter Post