PT-2021-3987 · Zscaler · Zscaler Client Connector

Published 2021-07-15 · Updated 2021-07-27 · CVE-2020-11634

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 versions prior to 2.1.2.105

Description The issue is caused by a DLL hijacking vulnerability due to the configuration of OpenSSL. This may allow a local adversary to execute arbitrary code in the SYSTEM context.

Recommendations For versions prior to 2.1.2.105, update to version 2.1.2.105 or later to resolve the issue. As a temporary workaround, consider restricting access to the SYSTEM context to minimize the risk of exploitation.

Fix

Uncontrolled Search Path Element

Weakness Enumeration

CWE-427

Related Identifiers

BDU:2021-04508

CVE-2020-11634

Affected Products

Zscaler Client Connector

References · 6

• https://help.zscaler.com/zscaler-client-connector/client-connector-app-release-summary-2020?applicable_category=Windows&applicable_version=2.1.2.105 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2020-11634 · Security Note
• https://bdu.fstec.ru/vul/2021-04508 · Security Note
• https://osv.dev/vulnerability/CVE-2020-11634 · Vendor Advisory
• https://help.zscaler.com/zscaler-client-connector/client-connector-app-release-summary-2020?applicable_category=Windows&applicable_version=2.1.2.105 · Note
• https://t.me/cvenotify/17703 · Telegram Post