Zscaler Client Connector up to 4.2.0.149 on Windows Autoupdater Log origin validation

Summaryinfo

A vulnerability identified as problematic has been detected in Zscaler Client Connector on Windows. Affected by this vulnerability is an unknown functionality of the component Autoupdater Log Handler. The manipulation leads to origin validation. This vulnerability is traded as CVE-2024-23458. An attack has to be approached locally. There is no exploit available. You should upgrade the affected component.

Detailsinfo

A vulnerability was found in Zscaler Client Connector on Windows. It has been rated as problematic. This issue affects some unknown functionality of the component Autoupdater Log Handler. The manipulation with an unknown input leads to a origin validation vulnerability. Using CWE to declare the problem leads to CWE-346. The product does not properly verify that the source of data or communication is valid. Impacted is confidentiality, integrity, and availability. The summary by CVE is:

While copying individual autoupdater log files, reparse point check was missing which could result into crafted attacks, potentially leading to a local privilege escalation. This issue affects Zscaler Client Connector on Windows <4.2.0.190.

It is possible to read the advisory at help.zscaler.com. The identification of this vulnerability is CVE-2024-23458 since 01/17/2024. The exploitation is known to be easy. Attacking locally is a requirement. The technical details are unknown and an exploit is not 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). Statistical analysis made it clear that VulDB provides the best quality for vulnerability data.

Productinfo

Vendor

• Zscaler

Name

• Client Connector

Version

• 1.3.1.6
• 1.4
• 1.4.0.105
• 2.1.2.74
• 2.1.2.105
• 2.1.2.150
• 3.1.0
• 3.4
• 3.4.0.124
• 3.6
• 3.7
• 3.7.0.172
• 3.9
• 4.1
• 4.1.0.62
• 4.2
• 4.2.0.149

CPE 2.3info

• 🔍
• 🔍
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CPE 2.2info

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• 🔍
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Statistical analysis made it clear that VulDB provides the best quality for vulnerability data.

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