CVE-2017-5243

The default SSH configuration in Rapid7 Nexpose hardware appliances shipped before June 2017 does not specify desired algorithms for key exchange and other important functions. As a result, it falls back to allowing ALL algorithms supported by the relevant version of OpenSSH and makes the installations vulnerable to a range of MITM, downgrade, and decryption attacks.

CVSS v3 8.5 HIGH
CVSS v2.0 6.8 MEDIUM

8.5^/10

CVSS v3 : HIGH

Vector : AV:N/AC:H/PR:L/UI:N/S:C/C:H/I:H/A:H

Exploitability : 1.8 / Impact : 6.0

Attack Vector NETWORK

Attack Complexity HIGH

Privileges Required LOW

User Interaction NONE

Confidentiality Impact HIGH

Integrity Impact HIGH

Availability Impact HIGH

Scope CHANGED

6.8^/10

CVSS v2.0 : MEDIUM

Vector : AV:N/AC:M/Au:N/C:P/I:P/A:P

Exploitability : 8.6 / Impact : 6.4

Access Vector NETWORK

Access Complexity MEDIUM

Authentication NONE

Confidentiality Impact PARTIAL

Integrity Impact PARTIAL

Availability Impact PARTIAL

References

Link	Resource
https://community.rapid7.com/community/nexpose/blog/2017/05/31/r7-2017-13-nexpose-hardware-appliance-ssh-enabled-obsolete-algorithms-cve-2017-5243	Vendor Advisory
https://community.rapid7.com/community/nexpose/blog/2017/05/31/r7-2017-13-nexpose-hardware-appliance-ssh-enabled-obsolete-algorithms-cve-2017-5243	Vendor Advisory

Configurations

Configuration 1 (hide)

cpe:2.3:a:rapid7:nexpose:*:*:*:*:*:*:*:*

History

21 Nov 2024, 03:27

Type	Values Removed	Values Added
References	~~() https://community.rapid7.com/community/nexpose/blog/2017/05/31/r7-2017-13-nexpose-hardware-appliance-ssh-enabled-obsolete-algorithms-cve-2017-5243 - Vendor Advisory~~	() https://community.rapid7.com/community/nexpose/blog/2017/05/31/r7-2017-13-nexpose-hardware-appliance-ssh-enabled-obsolete-algorithms-cve-2017-5243 - Vendor Advisory

Information

Published : 2017-06-06 16:29

Updated : 2024-11-21 03:27

NVD link : CVE-2017-5243

Mitre link : CVE-2017-5243

CVE.ORG link : CVE-2017-5243

JSON object : View

Products Affected

rapid7

nexpose

CWE

CWE-327

Use of a Broken or Risky Cryptographic Algorithm

{"id": "CVE-2017-5243", "metrics": {"cvssMetricV2": [{"type": "Primary", "source": "nvd@nist.gov", "cvssData": {"version": "2.0", "baseScore": 6.8, "accessVector": "NETWORK", "vectorString": "AV:N/AC:M/Au:N/C:P/I:P/A:P", "authentication": "NONE", "integrityImpact": "PARTIAL", "accessComplexity": "MEDIUM", "availabilityImpact": "PARTIAL", "confidentialityImpact": "PARTIAL"}, "acInsufInfo": false, "impactScore": 6.4, "baseSeverity": "MEDIUM", "obtainAllPrivilege": false, "exploitabilityScore": 8.6, "obtainUserPrivilege": false, "obtainOtherPrivilege": false, "userInteractionRequired": false}], "cvssMetricV30": [{"type": "Primary", "source": "nvd@nist.gov", "cvssData": {"scope": "CHANGED", "version": "3.0", "baseScore": 8.5, "attackVector": "NETWORK", "baseSeverity": "HIGH", "vectorString": "CVSS:3.0/AV:N/AC:H/PR:L/UI:N/S:C/C:H/I:H/A:H", "integrityImpact": "HIGH", "userInteraction": "NONE", "attackComplexity": "HIGH", "availabilityImpact": "HIGH", "privilegesRequired": "LOW", "confidentialityImpact": "HIGH"}, "impactScore": 6.0, "exploitabilityScore": 1.8}]}, "published": "2017-06-06T16:29:00.173", "references": [{"url": "https://community.rapid7.com/community/nexpose/blog/2017/05/31/r7-2017-13-nexpose-hardware-appliance-ssh-enabled-obsolete-algorithms-cve-2017-5243", "tags": ["Vendor Advisory"], "source": "cve@rapid7.com"}, {"url": "https://community.rapid7.com/community/nexpose/blog/2017/05/31/r7-2017-13-nexpose-hardware-appliance-ssh-enabled-obsolete-algorithms-cve-2017-5243", "tags": ["Vendor Advisory"], "source": "af854a3a-2127-422b-91ae-364da2661108"}], "vulnStatus": "Modified", "weaknesses": [{"type": "Secondary", "source": "cve@rapid7.com", "description": [{"lang": "en", "value": "CWE-327"}]}, {"type": "Primary", "source": "nvd@nist.gov", "description": [{"lang": "en", "value": "CWE-327"}]}], "descriptions": [{"lang": "en", "value": "The default SSH configuration in Rapid7 Nexpose hardware appliances shipped before June 2017 does not specify desired algorithms for key exchange and other important functions. As a result, it falls back to allowing ALL algorithms supported by the relevant version of OpenSSH and makes the installations vulnerable to a range of MITM, downgrade, and decryption attacks."}, {"lang": "es", "value": "La configuraci\u00f3n por defecto de SSH en los dispositivos hardware con Nexpose de Rapid7 enviados antes de Junio de 2017 no especifica los algoritmos deseados para el intercambio de claves y otras funciones importantes. Como resultado, vuelve a permitir TODOS los algoritmos compatibles para la versi\u00f3n relevante de OpenSSH y hace que las instalaciones sean vulnerables a una variedad de ataques MITM, degradados y descifrados."}], "lastModified": "2024-11-21T03:27:21.440", "configurations": [{"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:a:rapid7:nexpose:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "A1B79EC4-5022-4BE6-AF39-972407FD03AD", "versionEndIncluding": "6.4.40"}], "operator": "OR"}]}], "sourceIdentifier": "cve@rapid7.com"}