PT-2023-12108 · Zscaler · Zscaler Client Connector

Published 2023-10-23 · Updated 2023-10-27 · CVE-2021-26735

Positive Technologies (AI Summary)

CVSS v3.1

7.8

High

Base vector

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

Name of the Vulnerable Software and Affected Versions Zscaler Client Connector Installer and Uninstallers for Windows versions prior to 3.6

Description The issue is related to an unquoted search path vulnerability. A local adversary may be able to execute code with SYSTEM privileges.

Recommendations For versions prior to 3.6, update to version 3.6 or later to resolve the issue. As a temporary workaround, consider restricting access to the vulnerable installer and uninstallers to minimize the risk of exploitation.

Fix

Origin Validation Error

Weakness Enumeration

CWE-428

CWE-346

Related Identifiers

CVE-2021-26735

Affected Products

Zscaler Client Connector

References · 6

• https://osv.dev/vulnerability/CVE-2021-26735 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2021-26735 · Security Note
• https://help.zscaler.com/zscaler-client-connector/client-connector-app-release-summary-2021 · Note
• https://twitter.com/DMFezzaReedCISA/status/1716488478752494021 · Twitter Post
• https://twitter.com/CVEnew/status/1716448948825571406 · Twitter Post
• https://t.me/cibsecurity/72781 · Telegram Post