CVE-2018-16494

In VOS and overly permissive "umask" may allow for authorized users of the server to gain unauthorized access through insecure file permissions that can result in an arbitrary read, write, or execution of newly created files and directories. Insecure umask setting was present throughout the Versa servers.

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://hackerone.com/reports/1168191	Third Party Advisory
https://hackerone.com/reports/1168191	Third Party Advisory

Configurations

Configuration 1 (hide)

OR	cpe:2.3:o:versa-networks:versa_operating_system::::::::
	cpe:2.3:o:versa-networks:versa_operating_system::::::::
	cpe:2.3:o:versa-networks:versa_operating_system::::::::

History

21 Nov 2024, 03:52

Type	Values Removed	Values Added
References	~~() https://hackerone.com/reports/1168191 - Third Party Advisory~~	() https://hackerone.com/reports/1168191 - Third Party Advisory

Information

Published : 2021-05-26 19:15

Updated : 2024-11-21 03:52

NVD link : CVE-2018-16494

Mitre link : CVE-2018-16494

CVE.ORG link : CVE-2018-16494

JSON object : View

Products Affected

versa-networks

versa_operating_system

CWE

CWE-377

Insecure Temporary File

CWE-668

Exposure of Resource to Wrong Sphere

{"id": "CVE-2018-16494", "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}], "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": "2021-05-26T19:15:08.537", "references": [{"url": "https://hackerone.com/reports/1168191", "tags": ["Third Party Advisory"], "source": "support@hackerone.com"}, {"url": "https://hackerone.com/reports/1168191", "tags": ["Third Party Advisory"], "source": "af854a3a-2127-422b-91ae-364da2661108"}], "vulnStatus": "Modified", "weaknesses": [{"type": "Secondary", "source": "support@hackerone.com", "description": [{"lang": "en", "value": "CWE-377"}]}, {"type": "Primary", "source": "nvd@nist.gov", "description": [{"lang": "en", "value": "CWE-668"}]}], "descriptions": [{"lang": "en", "value": "In VOS and overly permissive \"umask\" may allow for authorized users of the server to gain unauthorized access through insecure file permissions that can result in an arbitrary read, write, or execution of newly created files and directories. Insecure umask setting was present throughout the Versa servers."}, {"lang": "es", "value": "En VOS, un \"umask\" excesivamente permisivo puede permitir a usuarios autorizados del servidor conseguir acceso no autorizado mediante permisos de archivo no seguros que pueden resultar en una lectura, escritura o ejecuci\u00f3n arbitraria de archivos y directorios reci\u00e9n dise\u00f1ados. La configuraci\u00f3n umask no segura estaba presente en todos los servidores de Versa"}], "lastModified": "2024-11-21T03:52:51.900", "configurations": [{"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:o:versa-networks:versa_operating_system:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "1E264C13-0CD8-49FB-868D-1CCF44906CDA", "versionEndExcluding": "16.1r2s11"}, {"criteria": "cpe:2.3:o:versa-networks:versa_operating_system:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "17ECACF2-A7D9-498F-AB4F-FEA707EC4D59", "versionEndExcluding": "20.2.2", "versionStartIncluding": "20.2.0"}, {"criteria": "cpe:2.3:o:versa-networks:versa_operating_system:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "76D6FE42-92E1-4CBE-B1EC-AD4D017127CB", "versionEndExcluding": "21.1.1", "versionStartIncluding": "21.1.0"}], "operator": "OR"}]}], "sourceIdentifier": "support@hackerone.com"}