PT-2023-21969 · Zscaler · Zscaler Client Connector

Published 2023-10-23 · Updated 2024-10-17 · CVE-2023-28793

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 for Linux versions prior to 1.3.1.6

Description A buffer overflow vulnerability in the signelf library used by Zscaler Client Connector on Linux allows code injection.

Recommendations For versions prior to 1.3.1.6, update to version 1.3.1.6 or later to resolve the issue. As a temporary workaround, consider disabling the signelf library until a patch is available. Restrict access to the Zscaler Client Connector to minimize the risk of exploitation.

Fix

Memory Corruption

Code Injection

Weakness Enumeration

CWE-787

CWE-94

Related Identifiers

CVE-2023-28793

Affected Products

Zscaler Client Connector

References · 7

• https://osv.dev/vulnerability/CVE-2023-28793 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2023-28793 · Security Note
• https://t.me/cvenotify/98517 · Telegram Post
• https://twitter.com/VulmonFeeds/status/1716495631798177847 · Twitter Post
• https://twitter.com/CVEnew/status/1716448944010428918 · Twitter Post
• https://help.zscaler.com/client-connector/client-connector-app-release-summary-2022?applicable_category=Linux&applicable_version=1.3.1&deployment_date=2022-09-19 · Note
• https://t.me/cibsecurity/72777 · Telegram Post