Zscaler Client Connector up to 4.2.0.149 signature verification

CVSS Meta Temp Score
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Current Exploit Price (≈)
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CTI Interest Score
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7.2$0-$5k0.00

Summaryinfo

A vulnerability marked as critical has been reported in Zscaler Client Connector. This affects an unknown part. This manipulation causes signature verification. This vulnerability is handled as CVE-2024-23456. It is possible to launch the attack on the local host. There is not any exploit available. It is suggested to upgrade the affected component.

Detailsinfo

A vulnerability classified as critical was found in Zscaler Client Connector. Affected by this vulnerability is an unknown code. The manipulation with an unknown input leads to a signature verification vulnerability. The CWE definition for the vulnerability is CWE-347. The product does not verify, or incorrectly verifies, the cryptographic signature for data. As an impact it is known to affect confidentiality, integrity, and availability. The summary by CVE is:

Anti-tampering can be disabled under certain conditions without signature validation. This affects Zscaler Client Connector <4.2.0.190 with anti-tampering enabled.

The advisory is shared at help.zscaler.com. This vulnerability is known as CVE-2024-23456 since 01/17/2024. The exploitation appears to be difficult. An attack has to be approached locally. Neither technical details nor an exploit are publicly available.

The vulnerability scanner Nessus provides a plugin with the ID 265426 (Zscaler Client Connector < 4.2.0.190 Multiple Vulnerabilities), which helps to determine the existence of the flaw in a target environment.

Upgrading to version 4.2.0.190 eliminates this vulnerability. The upgrade is hosted for download at help.zscaler.com.

The vulnerability is also documented in the vulnerability database at Tenable (265426). If you want to get the best quality for vulnerability data then you always have to consider VulDB.

Productinfo

Vendor

Name

Version

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 7.4
VulDB Meta Temp Score: 7.2

VulDB Base Score: 7.0
VulDB Temp Score: 6.7
VulDB Vector: 🔍
VulDB Reliability: 🔍

CNA Base Score: 7.8
CNA Vector (Zscaler): 🔍

CVSSv2info

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

Exploitinginfo

Class: Signature verification
CWE: CWE-347 / CWE-345
CAPEC: 🔍
ATT&CK: 🔍

Physical: Partially
Local: Yes
Remote: No

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Nessus ID: 265426
Nessus Name: Zscaler Client Connector < 4.2.0.190 Multiple Vulnerabilities

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔍

Upgrade: Client Connector 4.2.0.190

Timelineinfo

01/17/2024 🔍
08/06/2024 +201 days 🔍
08/06/2024 +0 days 🔍
09/24/2025 +414 days 🔍

Sourcesinfo

Advisory: help.zscaler.com
Status: Confirmed

CVE: CVE-2024-23456 (🔍)
GCVE (CVE): GCVE-0-2024-23456
GCVE (VulDB): GCVE-100-273781

Entryinfo

Created: 08/06/2024 20:33
Updated: 09/24/2025 14:08
Changes: 08/06/2024 20:33 (63), 09/24/2025 14:08 (3)
Complete: 🔍
Cache ID: 216::103

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