CVE-2023-28798 - Vulnerability Details - OpenCVE

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

No CVSS v4.0

Attack Vector Network

Attack Complexity High

Privileges Required None

Scope Changed

Confidentiality Impact Low

Integrity Impact Low

Availability Impact Low

User Interaction None

No CVSS v3.0

No CVSS v2

This CVE is not in the KEV list.

Exploitation none

Automatable no

Technical Impact total

Vendors	Products
Zscaler	Client Connector

Configuration 1 [-]

cpe:2.3:a:zscaler:client_connector:*:*:*:*:*:macos:*:*

No data.

References

Link	Providers
https://help.zscaler.com/client-connector/client-connector-app-release-summary-2022?applicable_category=macOS&applicable_version=3.7&deployment_date=2022-08-19&id=1414851

History

Tue, 17 Feb 2026 18:00:00 +0000

Type	Values Removed	Values Added
Weaknesses		CWE-787
CPEs		cpe:2.3:a:zscaler:client_connector::::::macos::*

MITRE

Status: PUBLISHED

Assigner: Zscaler

Published: 2024-05-02T13:10:31.933Z

Updated: 2024-08-02T13:51:38.162Z

Reserved: 2023-03-23T18:29:15.802Z

Link: CVE-2023-28798

Vulnrichment

Updated: 2024-05-02T16:24:41.790Z

NVD

Status : Analyzed

Published: 2024-05-02T13:23:05.807

Modified: 2026-02-20T21:23:10.113

Link: CVE-2023-28798

Redhat

No data.

{"dataType": "CVE_RECORD", "dataVersion": "5.1", "cveMetadata": {"cveId": "CVE-2023-28798", "assignerOrgId": "73c6f63b-efac-410d-a0a9-569700f85a04", "state": "PUBLISHED", "assignerShortName": "Zscaler", "dateReserved": "2023-03-23T18:29:15.802Z", "datePublished": "2024-05-02T13:10:31.933Z", "dateUpdated": "2024-08-02T13:51:38.162Z"}, "containers": {"cna": {"affected": [{"defaultStatus": "unaffected", "platforms": ["MacOS"], "product": "Client Connector", "vendor": "Zscaler", "versions": [{"lessThan": "3.7.0.172", "status": "affected", "version": "0", "versionType": "custom"}]}], "credits": [{"lang": "en", "type": "finder", "value": "Thomas Chauchefoin, SonarSource"}], "descriptions": [{"lang": "en", "supportingMedia": [{"base64": false, "type": "text/html", "value": "An out-of-bounds write to heap in the pacparser library on Zscaler Client Connector on Mac may lead to arbitrary code execution."}], "value": "An out-of-bounds write to heap in the pacparser library on Zscaler Client Connector on Mac may lead to arbitrary code execution."}], "impacts": [{"capecId": "CAPEC-100", "descriptions": [{"lang": "en", "value": "CAPEC-100 Overflow Buffers"}]}], "metrics": [{"cvssV3_1": {"attackComplexity": "HIGH", "attackVector": "NETWORK", "availabilityImpact": "LOW", "baseScore": 6.5, "baseSeverity": "MEDIUM", "confidentialityImpact": "LOW", "integrityImpact": "LOW", "privilegesRequired": "NONE", "scope": "CHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:L/I:L/A:L", "version": "3.1"}, "format": "CVSS", "scenarios": [{"lang": "en", "value": "GENERAL"}]}], "problemTypes": [{"descriptions": [{"cweId": "CWE-122", "description": "CWE-122 Heap-based Buffer Overflow", "lang": "en", "type": "CWE"}]}], "providerMetadata": {"orgId": "73c6f63b-efac-410d-a0a9-569700f85a04", "shortName": "Zscaler", "dateUpdated": "2024-05-02T13:10:31.933Z"}, "references": [{"url": "https://help.zscaler.com/client-connector/client-connector-app-release-summary-2022?applicable_category=macOS&applicable_version=3.7&deployment_date=2022-08-19&id=1414851"}], "source": {"discovery": "UNKNOWN"}, "title": "Out-of-bounds write to heap in pacparser", "x_generator": {"engine": "Vulnogram 0.1.0-dev"}}, "adp": [{"title": "CISA ADP Vulnrichment", "metrics": [{"other": {"type": "ssvc", "content": {"id": "CVE-2023-28798", "role": "CISA Coordinator", "options": [{"Exploitation": "none"}, {"Automatable": "no"}, {"Technical Impact": "total"}], "version": "2.0.3", "timestamp": "2024-05-02T16:22:56.380945Z"}}}], "affected": [{"cpes": ["cpe:2.3:a:zscaler:client_connector:-:*:*:*:*:macos:*:*"], "vendor": "zscaler", "product": "client_connector", "versions": [{"status": "affected", "version": "0", "lessThan": "3.7.0.172 ", "versionType": "custom"}], "defaultStatus": "unknown"}], "providerMetadata": {"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "shortName": "CISA-ADP", "dateUpdated": "2024-06-04T17:28:57.869Z"}}, {"providerMetadata": {"orgId": "af854a3a-2127-422b-91ae-364da2661108", "shortName": "CVE", "dateUpdated": "2024-08-02T13:51:38.162Z"}, "title": "CVE Program Container", "references": [{"url": "https://help.zscaler.com/client-connector/client-connector-app-release-summary-2022?applicable_category=macOS&applicable_version=3.7&deployment_date=2022-08-19&id=1414851", "tags": ["x_transferred"]}]}]}}

{"dataType": "CVE_RECORD", "dataVersion": "5.1", "cveMetadata": {"cveId": "CVE-2023-28798", "assignerOrgId": "73c6f63b-efac-410d-a0a9-569700f85a04", "state": "PUBLISHED", "assignerShortName": "Zscaler", "dateReserved": "2023-03-23T18:29:15.802Z", "datePublished": "2024-05-02T13:10:31.933Z", "dateUpdated": "2024-06-04T17:28:57.869Z"}, "containers": {"cna": {"affected": [{"defaultStatus": "unaffected", "platforms": ["MacOS"], "product": "Client Connector", "vendor": "Zscaler", "versions": [{"lessThan": "3.7.0.172", "status": "affected", "version": "0", "versionType": "custom"}]}], "credits": [{"lang": "en", "type": "finder", "value": "Thomas Chauchefoin, SonarSource"}], "descriptions": [{"lang": "en", "supportingMedia": [{"base64": false, "type": "text/html", "value": "An out-of-bounds write to heap in the pacparser library on Zscaler Client Connector on Mac may lead to arbitrary code execution."}], "value": "An out-of-bounds write to heap in the pacparser library on Zscaler Client Connector on Mac may lead to arbitrary code execution."}], "impacts": [{"capecId": "CAPEC-100", "descriptions": [{"lang": "en", "value": "CAPEC-100 Overflow Buffers"}]}], "metrics": [{"cvssV3_1": {"attackComplexity": "HIGH", "attackVector": "NETWORK", "availabilityImpact": "LOW", "baseScore": 6.5, "baseSeverity": "MEDIUM", "confidentialityImpact": "LOW", "integrityImpact": "LOW", "privilegesRequired": "NONE", "scope": "CHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:L/I:L/A:L", "version": "3.1"}, "format": "CVSS", "scenarios": [{"lang": "en", "value": "GENERAL"}]}], "problemTypes": [{"descriptions": [{"cweId": "CWE-122", "description": "CWE-122 Heap-based Buffer Overflow", "lang": "en", "type": "CWE"}]}], "providerMetadata": {"orgId": "73c6f63b-efac-410d-a0a9-569700f85a04", "shortName": "Zscaler", "dateUpdated": "2024-05-02T13:10:31.933Z"}, "references": [{"url": "https://help.zscaler.com/client-connector/client-connector-app-release-summary-2022?applicable_category=macOS&applicable_version=3.7&deployment_date=2022-08-19&id=1414851"}], "source": {"discovery": "UNKNOWN"}, "title": "Out-of-bounds write to heap in pacparser", "x_generator": {"engine": "Vulnogram 0.1.0-dev"}}, "adp": [{"metrics": [{"other": {"type": "ssvc", "content": {"id": "CVE-2023-28798", "role": "CISA Coordinator", "options": [{"Exploitation": "none"}, {"Automatable": "no"}, {"Technical Impact": "total"}], "version": "2.0.3", "timestamp": "2024-05-02T16:22:56.380945Z"}}}], "affected": [{"cpes": ["cpe:2.3:a:zscaler:client_connector:-:*:*:*:*:macos:*:*"], "vendor": "zscaler", "product": "client_connector", "versions": [{"status": "affected", "version": "0", "lessThan": "3.7.0.172 ", "versionType": "custom"}], "defaultStatus": "unknown"}], "providerMetadata": {"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "shortName": "CISA-ADP", "dateUpdated": "2024-05-02T16:24:41.790Z"}, "title": "CISA ADP Vulnrichment"}]}}

{"configurations": [{"nodes": [{"cpeMatch": [{"criteria": "cpe:2.3:a:zscaler:client_connector:*:*:*:*:*:macos:*:*", "matchCriteriaId": "42F3A99E-0E82-49F1-88D5-9397220A0A1A", "versionEndExcluding": "3.7", "vulnerable": true}], "negate": false, "operator": "OR"}]}], "cveTags": [], "descriptions": [{"lang": "en", "value": "An out-of-bounds write to heap in the pacparser library on Zscaler Client Connector on Mac may lead to arbitrary code execution."}, {"lang": "es", "value": "Una escritura fuera de los l\u00edmites en el mont\u00f3n en la librer\u00eda pacparser en Zscaler Client Connector en Mac puede provocar la ejecuci\u00f3n de c\u00f3digo arbitrario."}], "id": "CVE-2023-28798", "lastModified": "2026-02-20T21:23:10.113", "metrics": {"cvssMetricV31": [{"cvssData": {"attackComplexity": "HIGH", "attackVector": "NETWORK", "availabilityImpact": "LOW", "baseScore": 6.5, "baseSeverity": "MEDIUM", "confidentialityImpact": "LOW", "integrityImpact": "LOW", "privilegesRequired": "NONE", "scope": "CHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:L/I:L/A:L", "version": "3.1"}, "exploitabilityScore": 2.2, "impactScore": 3.7, "source": "cve@zscaler.com", "type": "Secondary"}, {"cvssData": {"attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "HIGH", "baseScore": 9.8, "baseSeverity": "CRITICAL", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "privilegesRequired": "NONE", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H", "version": "3.1"}, "exploitabilityScore": 3.9, "impactScore": 5.9, "source": "nvd@nist.gov", "type": "Primary"}]}, "published": "2024-05-02T13:23:05.807", "references": [{"source": "cve@zscaler.com", "tags": ["Release Notes", "Vendor Advisory"], "url": "https://help.zscaler.com/client-connector/client-connector-app-release-summary-2022?applicable_category=macOS&applicable_version=3.7&deployment_date=2022-08-19&id=1414851"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Release Notes", "Vendor Advisory"], "url": "https://help.zscaler.com/client-connector/client-connector-app-release-summary-2022?applicable_category=macOS&applicable_version=3.7&deployment_date=2022-08-19&id=1414851"}], "sourceIdentifier": "cve@zscaler.com", "vulnStatus": "Analyzed", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-122"}], "source": "cve@zscaler.com", "type": "Secondary"}, {"description": [{"lang": "en", "value": "CWE-787"}], "source": "nvd@nist.gov", "type": "Primary"}]}