Vulnerability-Lookup

CVE-2021-26738 (GCVE-0-2021-26738)

Vulnerability from cvelistv5 – Published: 2023-10-23 13:24 – Updated: 2025-02-27 20:40

Title

Privilege Escalation for ZCC macOS via PATH Variable

Summary

Zscaler Client Connector for macOS prior to 3.7 had an unquoted search path vulnerability via the PATH variable. A local adversary may be able to execute code with root privileges.

Severity

7.8 (High)


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

SSVC

Exploitation: none Automatable: no Technical Impact: total

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2025-02-26 21:49 UTC

CWE

CWE-426 - Untrusted Search Path

Assigner

Zscaler mitre root

References

1 reference

URL	Tags
https://help.zscaler.com/client-connector/client-…

Impacted products

1 product

Vendor	Product	Version	CPE status
Zscaler	Client Connector	Affected: 0 , < 3.7 (custom)	guessed

Credits

Deutsche Bank Red Team

Show details on NVD website

JSON

To clipboard

{
  "containers": {
    "adp": [
      {
        "providerMetadata": {
          "dateUpdated": "2024-08-03T20:33:40.800Z",
          "orgId": "af854a3a-2127-422b-91ae-364da2661108",
          "shortName": "CVE"
        },
        "references": [
          {
            "tags": [
              "x_transferred"
            ],
            "url": "https://help.zscaler.com/client-connector/client-connector-app-release-summary-2022?applicable_category=macOS\u0026applicable_version=3.7\u0026deployment_date=2022-08-19\u0026id=1414851"
          }
        ],
        "title": "CVE Program Container"
      },
      {
        "metrics": [
          {
            "other": {
              "content": {
                "id": "CVE-2021-26738",
                "options": [
                  {
                    "Exploitation": "none"
                  },
                  {
                    "Automatable": "no"
                  },
                  {
                    "Technical Impact": "total"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2025-02-26T21:49:27.775796Z",
                "version": "2.0.3"
              },
              "type": "ssvc"
            }
          }
        ],
        "providerMetadata": {
          "dateUpdated": "2025-02-27T20:40:03.972Z",
          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
        },
        "title": "CISA ADP Vulnrichment"
      }
    ],
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Client Connector",
          "vendor": "Zscaler",
          "versions": [
            {
              "lessThan": "3.7",
              "status": "affected",
              "version": "0",
              "versionType": "custom"
            }
          ]
        }
      ],
      "credits": [
        {
          "lang": "en",
          "type": "finder",
          "user": "00000000-0000-4000-9000-000000000000",
          "value": "Deutsche Bank Red Team"
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "supportingMedia": [
            {
              "base64": false,
              "type": "text/html",
              "value": "Zscaler Client Connector for macOS prior to 3.7 had an unquoted search path vulnerability via the PATH variable. A local adversary may be able to execute code with root privileges.\n\n\u003cbr\u003e"
            }
          ],
          "value": "Zscaler Client Connector for macOS prior to 3.7 had an unquoted search path vulnerability via the PATH variable. A local adversary may be able to execute code with root privileges.\n\n\n"
        }
      ],
      "impacts": [
        {
          "capecId": "CAPEC-233",
          "descriptions": [
            {
              "lang": "en",
              "value": "CAPEC-233 Privilege Escalation"
            }
          ]
        }
      ],
      "metrics": [
        {
          "cvssV3_1": {
            "attackComplexity": "LOW",
            "attackVector": "LOCAL",
            "availabilityImpact": "HIGH",
            "baseScore": 7.8,
            "baseSeverity": "HIGH",
            "confidentialityImpact": "HIGH",
            "integrityImpact": "HIGH",
            "privilegesRequired": "LOW",
            "scope": "UNCHANGED",
            "userInteraction": "NONE",
            "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
            "version": "3.1"
          },
          "format": "CVSS",
          "scenarios": [
            {
              "lang": "en",
              "value": "GENERAL"
            }
          ]
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "cweId": "CWE-426",
              "description": "CWE-426 Untrusted Search Path",
              "lang": "en",
              "type": "CWE"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2023-10-23T13:24:49.584Z",
        "orgId": "73c6f63b-efac-410d-a0a9-569700f85a04",
        "shortName": "Zscaler"
      },
      "references": [
        {
          "url": "https://help.zscaler.com/client-connector/client-connector-app-release-summary-2022?applicable_category=macOS\u0026applicable_version=3.7\u0026deployment_date=2022-08-19\u0026id=1414851"
        }
      ],
      "source": {
        "discovery": "UNKNOWN"
      },
      "title": "Privilege Escalation for ZCC macOS via PATH Variable",
      "x_generator": {
        "engine": "Vulnogram 0.1.0-dev"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "73c6f63b-efac-410d-a0a9-569700f85a04",
    "assignerShortName": "Zscaler",
    "cveId": "CVE-2021-26738",
    "datePublished": "2023-10-23T13:24:49.584Z",
    "dateReserved": "2021-02-05T20:34:27.824Z",
    "dateUpdated": "2025-02-27T20:40:03.972Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.1",
  "vulnerability-lookup:meta": {
    "epss": {
      "cve": "CVE-2021-26738",
      "date": "2026-09-17",
      "epss": "0.00228",
      "percentile": "0.13759"
    },
    "fkie_nvd": {
      "configurations": "[{\"nodes\": [{\"operator\": \"OR\", \"negate\": false, \"cpeMatch\": [{\"vulnerable\": true, \"criteria\": \"cpe:2.3:a:zscaler:client_connector:*:*:*:*:*:macos:*:*\", \"versionEndExcluding\": \"3.7\", \"matchCriteriaId\": \"42F3A99E-0E82-49F1-88D5-9397220A0A1A\"}]}]}]",
      "descriptions": "[{\"lang\": \"en\", \"value\": \"Zscaler Client Connector for macOS prior to 3.7 had an unquoted search path vulnerability via the PATH variable. A local adversary may be able to execute code with root privileges.\\n\\n\\n\"}, {\"lang\": \"es\", \"value\": \"Zscaler Client Connector para macOS anterior a 3.7 ten\\u00eda una vulnerabilidad de ruta de b\\u00fasqueda sin comillas a trav\\u00e9s de la variable PATH. Un adversario local puede ejecutar c\\u00f3digo con privilegios de root.\"}]",
      "id": "CVE-2021-26738",
      "lastModified": "2024-11-21T05:56:46.947",
      "metrics": "{\"cvssMetricV31\": [{\"source\": \"cve@zscaler.com\", \"type\": \"Secondary\", \"cvssData\": {\"version\": \"3.1\", \"vectorString\": \"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H\", \"baseScore\": 7.8, \"baseSeverity\": \"HIGH\", \"attackVector\": \"LOCAL\", \"attackComplexity\": \"LOW\", \"privilegesRequired\": \"LOW\", \"userInteraction\": \"NONE\", \"scope\": \"UNCHANGED\", \"confidentialityImpact\": \"HIGH\", \"integrityImpact\": \"HIGH\", \"availabilityImpact\": \"HIGH\"}, \"exploitabilityScore\": 1.8, \"impactScore\": 5.9}, {\"source\": \"nvd@nist.gov\", \"type\": \"Primary\", \"cvssData\": {\"version\": \"3.1\", \"vectorString\": \"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H\", \"baseScore\": 7.8, \"baseSeverity\": \"HIGH\", \"attackVector\": \"LOCAL\", \"attackComplexity\": \"LOW\", \"privilegesRequired\": \"LOW\", \"userInteraction\": \"NONE\", \"scope\": \"UNCHANGED\", \"confidentialityImpact\": \"HIGH\", \"integrityImpact\": \"HIGH\", \"availabilityImpact\": \"HIGH\"}, \"exploitabilityScore\": 1.8, \"impactScore\": 5.9}]}",
      "published": "2023-10-23T14:15:09.187",
      "references": "[{\"url\": \"https://help.zscaler.com/client-connector/client-connector-app-release-summary-2022?applicable_category=macOS\u0026applicable_version=3.7\u0026deployment_date=2022-08-19\u0026id=1414851\", \"source\": \"cve@zscaler.com\", \"tags\": [\"Release Notes\"]}, {\"url\": \"https://help.zscaler.com/client-connector/client-connector-app-release-summary-2022?applicable_category=macOS\u0026applicable_version=3.7\u0026deployment_date=2022-08-19\u0026id=1414851\", \"source\": \"af854a3a-2127-422b-91ae-364da2661108\", \"tags\": [\"Release Notes\"]}]",
      "sourceIdentifier": "cve@zscaler.com",
      "vulnStatus": "Modified",
      "weaknesses": "[{\"source\": \"cve@zscaler.com\", \"type\": \"Secondary\", \"description\": [{\"lang\": \"en\", \"value\": \"CWE-426\"}]}, {\"source\": \"nvd@nist.gov\", \"type\": \"Primary\", \"description\": [{\"lang\": \"en\", \"value\": \"CWE-426\"}]}]"
    },
    "nvd": "{\"cve\":{\"id\":\"CVE-2021-26738\",\"sourceIdentifier\":\"cve@zscaler.com\",\"published\":\"2023-10-23T14:15:09.187\",\"lastModified\":\"2024-11-21T05:56:46.947\",\"vulnStatus\":\"Modified\",\"cveTags\":[],\"descriptions\":[{\"lang\":\"en\",\"value\":\"Zscaler Client Connector for macOS prior to 3.7 had an unquoted search path vulnerability via the PATH variable. A local adversary may be able to execute code with root privileges.\\n\\n\\n\"},{\"lang\":\"es\",\"value\":\"Zscaler Client Connector para macOS anterior a 3.7 ten\u00eda una vulnerabilidad de ruta de b\u00fasqueda sin comillas a trav\u00e9s de la variable PATH. Un adversario local puede ejecutar c\u00f3digo con privilegios de root.\"}],\"metrics\":{\"cvssMetricV31\":[{\"source\":\"cve@zscaler.com\",\"type\":\"Secondary\",\"cvssData\":{\"version\":\"3.1\",\"vectorString\":\"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H\",\"baseScore\":7.8,\"baseSeverity\":\"HIGH\",\"attackVector\":\"LOCAL\",\"attackComplexity\":\"LOW\",\"privilegesRequired\":\"LOW\",\"userInteraction\":\"NONE\",\"scope\":\"UNCHANGED\",\"confidentialityImpact\":\"HIGH\",\"integrityImpact\":\"HIGH\",\"availabilityImpact\":\"HIGH\"},\"exploitabilityScore\":1.8,\"impactScore\":5.9},{\"source\":\"nvd@nist.gov\",\"type\":\"Primary\",\"cvssData\":{\"version\":\"3.1\",\"vectorString\":\"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H\",\"baseScore\":7.8,\"baseSeverity\":\"HIGH\",\"attackVector\":\"LOCAL\",\"attackComplexity\":\"LOW\",\"privilegesRequired\":\"LOW\",\"userInteraction\":\"NONE\",\"scope\":\"UNCHANGED\",\"confidentialityImpact\":\"HIGH\",\"integrityImpact\":\"HIGH\",\"availabilityImpact\":\"HIGH\"},\"exploitabilityScore\":1.8,\"impactScore\":5.9}]},\"weaknesses\":[{\"source\":\"cve@zscaler.com\",\"type\":\"Secondary\",\"description\":[{\"lang\":\"en\",\"value\":\"CWE-426\"}]},{\"source\":\"nvd@nist.gov\",\"type\":\"Primary\",\"description\":[{\"lang\":\"en\",\"value\":\"CWE-426\"}]}],\"configurations\":[{\"nodes\":[{\"operator\":\"OR\",\"negate\":false,\"cpeMatch\":[{\"vulnerable\":true,\"criteria\":\"cpe:2.3:a:zscaler:client_connector:*:*:*:*:*:macos:*:*\",\"versionEndExcluding\":\"3.7\",\"matchCriteriaId\":\"42F3A99E-0E82-49F1-88D5-9397220A0A1A\"}]}]}],\"references\":[{\"url\":\"https://help.zscaler.com/client-connector/client-connector-app-release-summary-2022?applicable_category=macOS\u0026applicable_version=3.7\u0026deployment_date=2022-08-19\u0026id=1414851\",\"source\":\"cve@zscaler.com\",\"tags\":[\"Release Notes\"]},{\"url\":\"https://help.zscaler.com/client-connector/client-connector-app-release-summary-2022?applicable_category=macOS\u0026applicable_version=3.7\u0026deployment_date=2022-08-19\u0026id=1414851\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\",\"tags\":[\"Release Notes\"]}]}}",
    "redhat_vex": {
      "current_release_date": "2025-05-29T04:26:37+00:00",
      "cve": "CVE-2021-26738",
      "id": "CVE-2021-26738",
      "initial_release_date": "2021-01-01T00:00:00+00:00",
      "product_status:known_not_affected": "1",
      "source": "Red Hat CSAF VEX",
      "status": "final",
      "title": "Privilege Escalation for ZCC macOS via PATH Variable",
      "url": "https://security.access.redhat.com/data/csaf/v2/vex/2021/cve-2021-26738.json",
      "version": "3"
    },
    "vulnrichment": {
      "containers": "{\"cna\": {\"affected\": [{\"defaultStatus\": \"unaffected\", \"product\": \"Client Connector\", \"vendor\": \"Zscaler\", \"versions\": [{\"lessThan\": \"3.7\", \"status\": \"affected\", \"version\": \"0\", \"versionType\": \"custom\"}]}], \"credits\": [{\"lang\": \"en\", \"type\": \"finder\", \"user\": \"00000000-0000-4000-9000-000000000000\", \"value\": \"Deutsche Bank Red Team\"}], \"descriptions\": [{\"lang\": \"en\", \"supportingMedia\": [{\"base64\": false, \"type\": \"text/html\", \"value\": \"Zscaler Client Connector for macOS prior to 3.7 had an unquoted search path vulnerability via the PATH variable. A local adversary may be able to execute code with root privileges.\\n\\n\u003cbr\u003e\"}], \"value\": \"Zscaler Client Connector for macOS prior to 3.7 had an unquoted search path vulnerability via the PATH variable. A local adversary may be able to execute code with root privileges.\\n\\n\\n\"}], \"impacts\": [{\"capecId\": \"CAPEC-233\", \"descriptions\": [{\"lang\": \"en\", \"value\": \"CAPEC-233 Privilege Escalation\"}]}], \"metrics\": [{\"cvssV3_1\": {\"attackComplexity\": \"LOW\", \"attackVector\": \"LOCAL\", \"availabilityImpact\": \"HIGH\", \"baseScore\": 7.8, \"baseSeverity\": \"HIGH\", \"confidentialityImpact\": \"HIGH\", \"integrityImpact\": \"HIGH\", \"privilegesRequired\": \"LOW\", \"scope\": \"UNCHANGED\", \"userInteraction\": \"NONE\", \"vectorString\": \"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H\", \"version\": \"3.1\"}, \"format\": \"CVSS\", \"scenarios\": [{\"lang\": \"en\", \"value\": \"GENERAL\"}]}], \"problemTypes\": [{\"descriptions\": [{\"cweId\": \"CWE-426\", \"description\": \"CWE-426 Untrusted Search Path\", \"lang\": \"en\", \"type\": \"CWE\"}]}], \"providerMetadata\": {\"orgId\": \"73c6f63b-efac-410d-a0a9-569700f85a04\", \"shortName\": \"Zscaler\", \"dateUpdated\": \"2023-10-23T13:24:49.584Z\"}, \"references\": [{\"url\": \"https://help.zscaler.com/client-connector/client-connector-app-release-summary-2022?applicable_category=macOS\u0026applicable_version=3.7\u0026deployment_date=2022-08-19\u0026id=1414851\"}], \"source\": {\"discovery\": \"UNKNOWN\"}, \"title\": \"Privilege Escalation for ZCC macOS via PATH Variable\", \"x_generator\": {\"engine\": \"Vulnogram 0.1.0-dev\"}}, \"adp\": [{\"providerMetadata\": {\"orgId\": \"af854a3a-2127-422b-91ae-364da2661108\", \"shortName\": \"CVE\", \"dateUpdated\": \"2024-08-03T20:33:40.800Z\"}, \"title\": \"CVE Program Container\", \"references\": [{\"url\": \"https://help.zscaler.com/client-connector/client-connector-app-release-summary-2022?applicable_category=macOS\u0026applicable_version=3.7\u0026deployment_date=2022-08-19\u0026id=1414851\", \"tags\": [\"x_transferred\"]}]}, {\"title\": \"CISA ADP Vulnrichment\", \"metrics\": [{\"other\": {\"type\": \"ssvc\", \"content\": {\"id\": \"CVE-2021-26738\", \"role\": \"CISA Coordinator\", \"options\": [{\"Exploitation\": \"none\"}, {\"Automatable\": \"no\"}, {\"Technical Impact\": \"total\"}], \"version\": \"2.0.3\", \"timestamp\": \"2025-02-26T21:49:27.775796Z\"}}}], \"providerMetadata\": {\"orgId\": \"134c704f-9b21-4f2e-91b3-4a467353bcc0\", \"shortName\": \"CISA-ADP\", \"dateUpdated\": \"2025-02-26T19:57:13.724Z\"}}]}",
      "cveMetadata": "{\"cveId\": \"CVE-2021-26738\", \"assignerOrgId\": \"73c6f63b-efac-410d-a0a9-569700f85a04\", \"state\": \"PUBLISHED\", \"assignerShortName\": \"Zscaler\", \"dateReserved\": \"2021-02-05T20:34:27.824Z\", \"datePublished\": \"2023-10-23T13:24:49.584Z\", \"dateUpdated\": \"2025-02-27T20:40:03.972Z\"}",
      "dataType": "CVE_RECORD",
      "dataVersion": "5.1"
    }
  }
}

FKIE_CVE-2021-26738

Vulnerability from fkie_nvd - Published: 2023-10-23 14:15 - Updated: 2026-06-17 03:43

Severity

7.8 (High) - CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
7.8 (High) - CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Summary

Zscaler Client Connector for macOS prior to 3.7 had an unquoted search path vulnerability via the PATH variable. A local adversary may be able to execute code with root privileges.

References

	URL	Tags
	cve@zscaler.com	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	Release Notes
	af854a3a-2127-422b-91ae-364da2661108	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	Release Notes

Impacted products

	Vendor	Product	Version
	zscaler	client_connector	*

JSON

To clipboard

{
  "affected": [
    {
      "affectedData": [
        {
          "defaultStatus": "unaffected",
          "product": "Client Connector",
          "vendor": "Zscaler",
          "versions": [
            {
              "lessThan": "3.7",
              "status": "affected",
              "version": "0",
              "versionType": "custom"
            }
          ]
        }
      ],
      "source": "cve@zscaler.com"
    }
  ],
  "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": "Zscaler Client Connector for macOS prior to 3.7 had an unquoted search path vulnerability via the PATH variable. A local adversary may be able to execute code with root privileges.\n\n\n"
    },
    {
      "lang": "es",
      "value": "Zscaler Client Connector para macOS anterior a 3.7 ten\u00eda una vulnerabilidad de ruta de b\u00fasqueda sin comillas a trav\u00e9s de la variable PATH. Un adversario local puede ejecutar c\u00f3digo con privilegios de root."
    }
  ],
  "id": "CVE-2021-26738",
  "lastModified": "2026-06-17T03:43:45.433",
  "metrics": {
    "cvssMetricV31": [
      {
        "cvssData": {
          "attackComplexity": "LOW",
          "attackVector": "LOCAL",
          "availabilityImpact": "HIGH",
          "baseScore": 7.8,
          "baseSeverity": "HIGH",
          "confidentialityImpact": "HIGH",
          "integrityImpact": "HIGH",
          "privilegesRequired": "LOW",
          "scope": "UNCHANGED",
          "userInteraction": "NONE",
          "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
          "version": "3.1"
        },
        "exploitabilityScore": 1.8,
        "impactScore": 5.9,
        "source": "cve@zscaler.com",
        "type": "Secondary"
      },
      {
        "cvssData": {
          "attackComplexity": "LOW",
          "attackVector": "LOCAL",
          "availabilityImpact": "HIGH",
          "baseScore": 7.8,
          "baseSeverity": "HIGH",
          "confidentialityImpact": "HIGH",
          "integrityImpact": "HIGH",
          "privilegesRequired": "LOW",
          "scope": "UNCHANGED",
          "userInteraction": "NONE",
          "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
          "version": "3.1"
        },
        "exploitabilityScore": 1.8,
        "impactScore": 5.9,
        "source": "nvd@nist.gov",
        "type": "Primary"
      }
    ],
    "ssvcV203": [
      {
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "ssvcData": {
          "id": "CVE-2021-26738",
          "options": [
            {
              "exploitation": "none"
            },
            {
              "automatable": "no"
            },
            {
              "technicalImpact": "total"
            }
          ],
          "role": "CISA Coordinator",
          "timestamp": "2025-02-26T21:49:27.775796Z",
          "version": "2.0.3"
        }
      }
    ]
  },
  "published": "2023-10-23T14:15:09.187",
  "references": [
    {
      "source": "cve@zscaler.com",
      "tags": [
        "Release Notes"
      ],
      "url": "https://help.zscaler.com/client-connector/client-connector-app-release-summary-2022?applicable_category=macOS\u0026applicable_version=3.7\u0026deployment_date=2022-08-19\u0026id=1414851"
    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "tags": [
        "Release Notes"
      ],
      "url": "https://help.zscaler.com/client-connector/client-connector-app-release-summary-2022?applicable_category=macOS\u0026applicable_version=3.7\u0026deployment_date=2022-08-19\u0026id=1414851"
    }
  ],
  "sourceIdentifier": "cve@zscaler.com",
  "vulnStatus": "Modified",
  "weaknesses": [
    {
      "description": [
        {
          "lang": "en",
          "value": "CWE-426"
        }
      ],
      "source": "cve@zscaler.com",
      "type": "Secondary"
    },
    {
      "description": [
        {
          "lang": "en",
          "value": "CWE-426"
        }
      ],
      "source": "nvd@nist.gov",
      "type": "Primary"
    }
  ]
}

GHSA-CR8H-8GV8-GXXV

Vulnerability from github – Published: 2023-10-23 15:30 – Updated: 2024-04-04 08:52

Details

Zscaler Client Connector for macOS prior to 3.7 had an unquoted search path vulnerability via the PATH variable. A local adversary may be able to execute code with root privileges.

Severity

7.8 (High)


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

Show details on source website

JSON

To clipboard

{
  "affected": [],
  "aliases": [
    "CVE-2021-26738"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-426"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2023-10-23T14:15:09Z",
    "severity": "HIGH"
  },
  "details": "Zscaler Client Connector for macOS prior to 3.7 had an unquoted search path vulnerability via the PATH variable. A local adversary may be able to execute code with root privileges.\n\n\n",
  "id": "GHSA-cr8h-8gv8-gxxv",
  "modified": "2024-04-04T08:52:56Z",
  "published": "2023-10-23T15:30:24Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2021-26738"
    },
    {
      "type": "WEB",
      "url": "https://help.zscaler.com/client-connector/client-connector-app-release-summary-2022?applicable_category=macOS\u0026applicable_version=3.7\u0026deployment_date=2022-08-19\u0026id=1414851"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
      "type": "CVSS_V3"
    }
  ]
}

GSD-2021-26738

Vulnerability from gsd - Updated: 2023-12-13 01:23

Details

Zscaler Client Connector for macOS prior to 3.7 had an unquoted search path vulnerability via the PATH variable. A local adversary may be able to execute code with root privileges.

Aliases

CVE-2021-26738

Aliases

CVE-2021-26738

JSON

To clipboard

{
  "GSD": {
    "alias": "CVE-2021-26738",
    "id": "GSD-2021-26738"
  },
  "gsd": {
    "metadata": {
      "exploitCode": "unknown",
      "remediation": "unknown",
      "reportConfidence": "confirmed",
      "type": "vulnerability"
    },
    "osvSchema": {
      "aliases": [
        "CVE-2021-26738"
      ],
      "details": "Zscaler Client Connector for macOS prior to 3.7 had an unquoted search path vulnerability via the PATH variable. A local adversary may be able to execute code with root privileges.\n\n\n",
      "id": "GSD-2021-26738",
      "modified": "2023-12-13T01:23:33.738287Z",
      "schema_version": "1.4.0"
    }
  },
  "namespaces": {
    "cve.org": {
      "CVE_data_meta": {
        "ASSIGNER": "cve@zscaler.com",
        "ID": "CVE-2021-26738",
        "STATE": "PUBLIC"
      },
      "affects": {
        "vendor": {
          "vendor_data": [
            {
              "product": {
                "product_data": [
                  {
                    "product_name": "Client Connector",
                    "version": {
                      "version_data": [
                        {
                          "version_affected": "\u003c",
                          "version_name": "0",
                          "version_value": "3.7"
                        }
                      ]
                    }
                  }
                ]
              },
              "vendor_name": "Zscaler"
            }
          ]
        }
      },
      "credits": [
        {
          "lang": "en",
          "value": "Deutsche Bank Red Team"
        }
      ],
      "data_format": "MITRE",
      "data_type": "CVE",
      "data_version": "4.0",
      "description": {
        "description_data": [
          {
            "lang": "eng",
            "value": "Zscaler Client Connector for macOS prior to 3.7 had an unquoted search path vulnerability via the PATH variable. A local adversary may be able to execute code with root privileges.\n\n\n"
          }
        ]
      },
      "generator": {
        "engine": "Vulnogram 0.1.0-dev"
      },
      "impact": {
        "cvss": [
          {
            "attackComplexity": "LOW",
            "attackVector": "LOCAL",
            "availabilityImpact": "HIGH",
            "baseScore": 7.8,
            "baseSeverity": "HIGH",
            "confidentialityImpact": "HIGH",
            "integrityImpact": "HIGH",
            "privilegesRequired": "LOW",
            "scope": "UNCHANGED",
            "userInteraction": "NONE",
            "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
            "version": "3.1"
          }
        ]
      },
      "problemtype": {
        "problemtype_data": [
          {
            "description": [
              {
                "cweId": "CWE-426",
                "lang": "eng",
                "value": "CWE-426 Untrusted Search Path"
              }
            ]
          }
        ]
      },
      "references": {
        "reference_data": [
          {
            "name": "https://help.zscaler.com/client-connector/client-connector-app-release-summary-2022?applicable_category=macOS\u0026applicable_version=3.7\u0026deployment_date=2022-08-19\u0026id=1414851",
            "refsource": "MISC",
            "url": "https://help.zscaler.com/client-connector/client-connector-app-release-summary-2022?applicable_category=macOS\u0026applicable_version=3.7\u0026deployment_date=2022-08-19\u0026id=1414851"
          }
        ]
      },
      "source": {
        "discovery": "UNKNOWN"
      }
    },
    "nvd.nist.gov": {
      "configurations": {
        "CVE_data_version": "4.0",
        "nodes": [
          {
            "children": [],
            "cpe_match": [
              {
                "cpe23Uri": "cpe:2.3:a:zscaler:client_connector:*:*:*:*:*:macos:*:*",
                "cpe_name": [],
                "versionEndExcluding": "3.7",
                "vulnerable": true
              }
            ],
            "operator": "OR"
          }
        ]
      },
      "cve": {
        "CVE_data_meta": {
          "ASSIGNER": "cve@zscaler.com",
          "ID": "CVE-2021-26738"
        },
        "data_format": "MITRE",
        "data_type": "CVE",
        "data_version": "4.0",
        "description": {
          "description_data": [
            {
              "lang": "en",
              "value": "Zscaler Client Connector for macOS prior to 3.7 had an unquoted search path vulnerability via the PATH variable. A local adversary may be able to execute code with root privileges.\n\n\n"
            }
          ]
        },
        "problemtype": {
          "problemtype_data": [
            {
              "description": [
                {
                  "lang": "en",
                  "value": "CWE-426"
                }
              ]
            }
          ]
        },
        "references": {
          "reference_data": [
            {
              "name": "https://help.zscaler.com/client-connector/client-connector-app-release-summary-2022?applicable_category=macOS\u0026applicable_version=3.7\u0026deployment_date=2022-08-19\u0026id=1414851",
              "refsource": "MISC",
              "tags": [
                "Release Notes"
              ],
              "url": "https://help.zscaler.com/client-connector/client-connector-app-release-summary-2022?applicable_category=macOS\u0026applicable_version=3.7\u0026deployment_date=2022-08-19\u0026id=1414851"
            }
          ]
        }
      },
      "impact": {
        "baseMetricV3": {
          "cvssV3": {
            "attackComplexity": "LOW",
            "attackVector": "LOCAL",
            "availabilityImpact": "HIGH",
            "baseScore": 7.8,
            "baseSeverity": "HIGH",
            "confidentialityImpact": "HIGH",
            "integrityImpact": "HIGH",
            "privilegesRequired": "LOW",
            "scope": "UNCHANGED",
            "userInteraction": "NONE",
            "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
            "version": "3.1"
          },
          "exploitabilityScore": 1.8,
          "impactScore": 5.9
        }
      },
      "lastModifiedDate": "2023-10-27T00:33Z",
      "publishedDate": "2023-10-23T14:15Z"
    }
  }
}

WID-SEC-W-2023-2733

Vulnerability from csaf_certbund - Published: 2023-10-23 22:00 - Updated: 2023-10-23 22:00

Summary

ZScaler Client Connector: Mehrere Schwachstellen

Severity

Hoch

Scope

12 vulnerabilities in this advisory, including CVE-2021-26738.

CVE-2021-26738

Es besteht eine Schwachstelle in ZScaler Client Connector. Dieser Fehler besteht aufgrund eines nicht zitierten Suchpfades. Ein lokaler Angreifer kann diese Schwachstelle zur Ausführung von beliebigem Code ausnutzen.

Known affected: 1 product

Open the full advisory

Sightings

Author	Source	Type	Date	Other

Nomenclature

Seen: The vulnerability was mentioned, discussed, or observed by the user.
Confirmed: The vulnerability has been validated from an analyst's perspective.
Published Proof of Concept: A public proof of concept is available for this vulnerability.
Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
Not confirmed: The user expressed doubt about the validity of the vulnerability.
Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.

Detection rules are retrieved from Rulezet.

The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base model, served locally by ML-Gateway. They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.

Related by attack behaviour

Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.

Action not permitted

CVE-2021-26738 (GCVE-0-2021-26738)

FKIE_CVE-2021-26738

GHSA-CR8H-8GV8-GXXV

GSD-2021-26738

WID-SEC-W-2023-2733

Tags

Sightings

Nomenclature

Related by attack behaviour