CVE-2021-34994

This vulnerability allows remote attackers to execute arbitrary code on affected installations of Commvault CommCell 11.22.22. Although authentication is required to exploit this vulnerability, the existing authentication mechanism can be bypassed. The specific flaw exists within the DataProvider class. The issue results from the lack of proper validation of a user-supplied string before executing it as JavaScript code. An attacker can leverage this vulnerability to escape the JavaScript sandbox and execute Java code in the context of NETWORK SERVICE. Was ZDI-CAN-13755.

CVSS v3 8.8 HIGH
CVSS v2.0 6.5 MEDIUM

8.8^/10

CVSS v3 : HIGH

Vector :

Exploitability : 2.8 / Impact : 5.9

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required LOW

User Interaction NONE

Confidentiality Impact HIGH

Integrity Impact HIGH

Availability Impact HIGH

Scope UNCHANGED

6.5^/10

CVSS v2.0 : MEDIUM

Vector : AV:N/AC:L/Au:S/C:P/I:P/A:P

Exploitability : 8.0 / Impact : 6.4

Access Vector NETWORK

Access Complexity LOW

Authentication SINGLE

Confidentiality Impact PARTIAL

Integrity Impact PARTIAL

Availability Impact PARTIAL

References

Link	Resource
https://www.zerodayinitiative.com/advisories/ZDI-21-1329/	Third Party Advisory VDB Entry
https://www.zerodayinitiative.com/advisories/ZDI-21-1329/	Third Party Advisory VDB Entry

Configurations

Configuration 1 (hide)

cpe:2.3:a:commvault:commcell:11.22.22:*:*:*:*:*:*:*

History

21 Nov 2024, 06:11

Type	Values Removed	Values Added
References	~~() https://www.zerodayinitiative.com/advisories/ZDI-21-1329/ - Third Party Advisory, VDB Entry~~	() https://www.zerodayinitiative.com/advisories/ZDI-21-1329/ - Third Party Advisory, VDB Entry

26 Jun 2023, 19:00

Type	Values Removed	Values Added
CWE	~~CWE-20~~	CWE-94

Information

Published : 2022-01-13 22:15

Updated : 2024-11-21 06:11

NVD link : CVE-2021-34994

Mitre link : CVE-2021-34994

CVE.ORG link : CVE-2021-34994

JSON object : View

Products Affected

commvault

commcell

CWE

CWE-20

Improper Input Validation

CWE-94

Improper Control of Generation of Code ('Code Injection')

{"id": "CVE-2021-34994", "metrics": {"cvssMetricV2": [{"type": "Primary", "source": "nvd@nist.gov", "cvssData": {"version": "2.0", "baseScore": 6.5, "accessVector": "NETWORK", "vectorString": "AV:N/AC:L/Au:S/C:P/I:P/A:P", "authentication": "SINGLE", "integrityImpact": "PARTIAL", "accessComplexity": "LOW", "availabilityImpact": "PARTIAL", "confidentialityImpact": "PARTIAL"}, "acInsufInfo": false, "impactScore": 6.4, "baseSeverity": "MEDIUM", "obtainAllPrivilege": false, "exploitabilityScore": 8.0, "obtainUserPrivilege": false, "obtainOtherPrivilege": false, "userInteractionRequired": false}], "cvssMetricV30": [{"type": "Secondary", "source": "zdi-disclosures@trendmicro.com", "cvssData": {"scope": "UNCHANGED", "version": "3.0", "baseScore": 8.8, "attackVector": "NETWORK", "baseSeverity": "HIGH", "vectorString": "CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H", "integrityImpact": "HIGH", "userInteraction": "NONE", "attackComplexity": "LOW", "availabilityImpact": "HIGH", "privilegesRequired": "LOW", "confidentialityImpact": "HIGH"}, "impactScore": 5.9, "exploitabilityScore": 2.8}], "cvssMetricV31": [{"type": "Primary", "source": "nvd@nist.gov", "cvssData": {"scope": "UNCHANGED", "version": "3.1", "baseScore": 8.8, "attackVector": "NETWORK", "baseSeverity": "HIGH", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H", "integrityImpact": "HIGH", "userInteraction": "NONE", "attackComplexity": "LOW", "availabilityImpact": "HIGH", "privilegesRequired": "LOW", "confidentialityImpact": "HIGH"}, "impactScore": 5.9, "exploitabilityScore": 2.8}]}, "published": "2022-01-13T22:15:12.993", "references": [{"url": "https://www.zerodayinitiative.com/advisories/ZDI-21-1329/", "tags": ["Third Party Advisory", "VDB Entry"], "source": "zdi-disclosures@trendmicro.com"}, {"url": "https://www.zerodayinitiative.com/advisories/ZDI-21-1329/", "tags": ["Third Party Advisory", "VDB Entry"], "source": "af854a3a-2127-422b-91ae-364da2661108"}], "vulnStatus": "Modified", "weaknesses": [{"type": "Secondary", "source": "zdi-disclosures@trendmicro.com", "description": [{"lang": "en", "value": "CWE-20"}]}, {"type": "Primary", "source": "nvd@nist.gov", "description": [{"lang": "en", "value": "CWE-94"}]}], "descriptions": [{"lang": "en", "value": "This vulnerability allows remote attackers to execute arbitrary code on affected installations of Commvault CommCell 11.22.22. Although authentication is required to exploit this vulnerability, the existing authentication mechanism can be bypassed. The specific flaw exists within the DataProvider class. The issue results from the lack of proper validation of a user-supplied string before executing it as JavaScript code. An attacker can leverage this vulnerability to escape the JavaScript sandbox and execute Java code in the context of NETWORK SERVICE. Was ZDI-CAN-13755."}, {"lang": "es", "value": "Esta vulnerabilidad permite a atacantes remotos ejecutar c\u00f3digo arbitrario en las instalaciones afectadas de Commvault CommCell versi\u00f3n 11.22.22. Aunque es requerida una autenticaci\u00f3n para explotar esta vulnerabilidad, el mecanismo de autenticaci\u00f3n existente puede ser omitido. El fallo espec\u00edfico se presenta en la clase DataProvider. El problema es debido a una falta de comprobaci\u00f3n apropiada de una cadena suministrada por el usuario antes de ejecutarla como c\u00f3digo JavaScript. Un atacante puede aprovechar esta vulnerabilidad para escapar del sandbox de JavaScript y ejecutar c\u00f3digo Java en el contexto de NETWORK SERVICE. Fue ZDI-CAN-13755"}], "lastModified": "2024-11-21T06:11:39.667", "configurations": [{"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:a:commvault:commcell:11.22.22:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "A878ED91-1EF4-4B0E-9613-C4A089BC29F3"}], "operator": "OR"}]}], "sourceIdentifier": "zdi-disclosures@trendmicro.com"}