Zscaler Client Connector up to 4.2 on Windows Diagnostics integrity check

CVSS Meta Temp Score
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CTI Interest Score
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4.5$0-$5k0.00

Summaryinfo

A vulnerability was found in Zscaler Client Connector on Windows. It has been rated as problematic. The affected element is an unknown function of the component Diagnostics. Performing a manipulation results in integrity check. This vulnerability is cataloged as CVE-2023-28802. The attack may be carried out on the physical device. There is no exploit available. Upgrading the affected component is advised.

Detailsinfo

A vulnerability classified as problematic has been found in Zscaler Client Connector on Windows. This affects an unknown function of the component Diagnostics. The manipulation with an unknown input leads to a integrity check vulnerability. CWE is classifying the issue as CWE-354. The product does not validate or incorrectly validates the integrity check values or "checksums" of a message. This may prevent it from detecting if the data has been modified or corrupted in transmission. This is going to have an impact on integrity, and availability. The summary by CVE is:

An Improper Validation of Integrity Check Value in Zscaler Client Connector on Windows allows an authenticated user to disable ZIA/ZPA by interrupting the service restart from Zscaler Diagnostics. This issue affects Client Connector: before 4.2.0.149.

The weakness was shared 11/21/2023. The advisory is shared at help.zscaler.com. This vulnerability is uniquely identified as CVE-2023-28802 since 03/23/2023. Neither technical details nor an exploit are publicly available.

Upgrading to version 4.2.0.149 eliminates this vulnerability. The upgrade is hosted for download at help.zscaler.com.

Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

Productinfo

Vendor

Name

Version

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 4.5
VulDB Meta Temp Score: 4.5

VulDB Base Score: 3.2
VulDB Temp Score: 3.1
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 5.4
NVD Vector: 🔍

CNA Base Score: 4.9
CNA Vector (Zscaler, Inc.): 🔍

CVSSv2info

AVACAuCIA
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VectorComplexityAuthenticationConfidentialityIntegrityAvailability
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VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

Exploitinginfo

Class: Integrity check
CWE: CWE-354 / CWE-345
CAPEC: 🔍
ATT&CK: 🔍

Physical: Yes
Local: Yes
Remote: Yes

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔍

Upgrade: Client Connector 4.2.0.149

Timelineinfo

03/23/2023 🔍
11/21/2023 +243 days 🔍
11/21/2023 +0 days 🔍
01/06/2026 +777 days 🔍

Sourcesinfo

Advisory: help.zscaler.com
Status: Confirmed

CVE: CVE-2023-28802 (🔍)
GCVE (CVE): GCVE-0-2023-28802
GCVE (VulDB): GCVE-100-245889

Entryinfo

Created: 11/21/2023 13:39
Updated: 01/06/2026 08:35
Changes: 11/21/2023 13:39 (50), 12/15/2023 09:05 (11), 01/06/2026 08:35 (16)
Complete: 🔍
Cache ID: 216::103

Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

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