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[email protected]CVE-2021-26737

HistoryOct 23, 2023 - 2:15 p.m.

CVE-2021-26737

2023-10-2314:15:09

CWE-346

[email protected]

web.nvd.nist.gov

zscaler

client connector

macos

vulnerability

cve-2021-26737

rpc

race condition

nvd

5.5 Medium

CVSS3

Attack Vector

LOCAL

Attack Complexity

LOW

Privileges Required

LOW

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

NONE

Integrity Impact

NONE

Availability Impact

HIGH

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

4.5 Medium

AI Score

Confidence

High

0.0004 Low

EPSS

Percentile

9.0%

JSON

The Zscaler Client Connector for macOS prior to 3.6 did not sufficiently validate RPC clients. A local adversary without sufficient privileges may be able to shutdown the Zscaler tunnel by exploiting a race condition.

Affected configurations

NVD

Node

zscalerclient_connectorRange<3.6macos

CPENameOperatorVersion
zscaler:client_connectorzscaler client connectorlt3.6

CPE	Name	Operator	Version
zscaler:client_connector	zscaler client connector	lt	3.6

CNA Affected

[
  {
    "defaultStatus": "unaffected",
    "product": "Client Connector",
    "vendor": "Zscaler",
    "versions": [
      {
        "lessThan": "3.6",
        "status": "affected",
        "version": "0",
        "versionType": "custom"
      }
    ]
  }
]

References

help.zscaler.com/client-connector/client-connector-app-release-summary-2022?applicable_category=macOS&applicable_version=3.6&deployment_date=2022-01-07&id=1388686

5.5 Medium

CVSS3

Attack Vector

LOCAL

Attack Complexity

LOW

Privileges Required

LOW

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

NONE

Integrity Impact

NONE

Availability Impact

HIGH

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

4.5 Medium

AI Score

Confidence

High

0.0004 Low

EPSS

Percentile

9.0%

JSON

Related for CVE-2021-26737

nvd1 prion1 cvelist1