Zscaler Client Connector up to 3.7 on macOS heap-based overflow

CVSS Meta Temp Score
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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 on macOS. Impacted is an unknown function. This manipulation causes heap-based overflow. This vulnerability is handled as CVE-2023-28798. The attack can be initiated remotely. There is not any exploit available. It is suggested to upgrade the affected component.

Detailsinfo

A vulnerability was found in Zscaler Client Connector on macOS. It has been declared as critical. Affected by this vulnerability is an unknown code. The manipulation with an unknown input leads to a heap-based overflow vulnerability. The CWE definition for the vulnerability is CWE-122. A heap overflow condition is a buffer overflow, where the buffer that can be overwritten is allocated in the heap portion of memory, generally meaning that the buffer was allocated using a routine such as malloc(). As an impact it is known to affect confidentiality, integrity, and availability. The summary by CVE is:

An out-of-bounds write to heap in the pacparser library on Zscaler Client Connector on Mac may lead to arbitrary code execution.

The weakness was released by Thomas Chauchefoin and Sonarsource. The advisory is shared at help.zscaler.com. This vulnerability is known as CVE-2023-28798 since 03/23/2023. The exploitation appears to be difficult. The attack can be launched remotely. The exploitation doesn't need any form of authentication. Neither technical details nor an exploit are publicly available.

Upgrading to version 3.7.0.172 eliminates this vulnerability.

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: 7.3
VulDB Meta Temp Score: 7.2

VulDB Base Score: 5.6
VulDB Temp Score: 5.4
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 9.8
NVD Vector: 🔍

CNA Base Score: 6.5
CNA Vector (Zscaler, Inc.): 🔍

CVSSv2info

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VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

Exploitinginfo

Class: Heap-based overflow
CWE: CWE-122 / CWE-119
CAPEC: 🔍
ATT&CK: 🔍

Physical: No
Local: No
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 3.7.0.172

Timelineinfo

03/23/2023 🔍
05/02/2024 +405 days 🔍
05/02/2024 +0 days 🔍
02/17/2026 +656 days 🔍

Sourcesinfo

Advisory: help.zscaler.com
Researcher: Thomas Chauchefoin, Sonarsource
Status: Confirmed

CVE: CVE-2023-28798 (🔍)
GCVE (CVE): GCVE-0-2023-28798
GCVE (VulDB): GCVE-100-262861

Entryinfo

Created: 05/02/2024 15:40
Updated: 02/17/2026 19:20
Changes: 05/02/2024 15:40 (64), 02/17/2026 19:20 (14)
Complete: 🔍
Cache ID: 216::103

If you want to get the best quality for vulnerability data then you always have to consider VulDB.

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