CVE-2021-20505

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{"affected": [{"affectedData": [{"product": "PowerVM Hypervisor", "vendor": "IBM", "versions": [{"status": "affected", "version": "FW920"}, {"status": "affected", "version": "FW930"}, {"status": "affected", "version": "FW940"}, {"status": "affected", "version": "FW950"}]}], "source": "psirt@us.ibm.com"}], "configurations": [{"nodes": [{"cpeMatch": [{"criteria": "cpe:2.3:o:ibm:powervm_hypervisor:fw920:*:*:*:*:*:*:*", "matchCriteriaId": "20EB1647-3463-4296-A103-ECC4BC37D6E4", "vulnerable": true}, {"criteria": "cpe:2.3:o:ibm:powervm_hypervisor:fw930:*:*:*:*:*:*:*", "matchCriteriaId": "FBD55D95-2969-4C64-A8E4-5BCE9BE4DE81", "vulnerable": true}, {"criteria": "cpe:2.3:o:ibm:powervm_hypervisor:fw940:*:*:*:*:*:*:*", "matchCriteriaId": "D9685283-13BE-474E-A09E-66AF9A72B9E9", "vulnerable": true}, {"criteria": "cpe:2.3:o:ibm:powervm_hypervisor:fw950:*:*:*:*:*:*:*", "matchCriteriaId": "84837FC8-545A-44B4-8144-F8DC8EBCB165", "vulnerable": true}], "negate": false, "operator": "OR"}]}], "cveTags": [], "descriptions": [{"lang": "en", "value": "The PowerVM Logical Partition Mobility(LPM) (PowerVM Hypervisor FW920, FW930, FW940, and FW950) encryption key exchange protocol can be compromised. If an attacker has the ability to capture encrypted LPM network traffic and is able to gain service access to the FSP they can use this information to perform a series of PowerVM service procedures to decrypt the captured migration traffic IBM X-Force ID: 198232"}, {"lang": "es", "value": "El protocolo de intercambio de claves de cifrado de PowerVM Logical Partition Mobility(LPM) (PowerVM Hypervisor FW920, FW930, FW940 y FW950) puede estar comprometido. Si un atacante tiene la habilidad de capturar el tr\u00e1fico de red LPM encriptado y es capaz de conseguir acceso de servicio al FSP puede usar esta informaci\u00f3n para llevar a cabo una serie de procedimientos de servicio PowerVM para descifrar el tr\u00e1fico de migraci\u00f3n capturado. IBM X-Force ID: 198232"}], "id": "CVE-2021-20505", "lastModified": "2026-06-17T03:33:56.740", "metrics": {"cvssMetricV2": [{"acInsufInfo": false, "baseSeverity": "LOW", "cvssData": {"accessComplexity": "MEDIUM", "accessVector": "NETWORK", "authentication": "SINGLE", "availabilityImpact": "NONE", "baseScore": 3.5, "confidentialityImpact": "PARTIAL", "integrityImpact": "NONE", "vectorString": "AV:N/AC:M/Au:S/C:P/I:N/A:N", "version": "2.0"}, "exploitabilityScore": 6.8, "impactScore": 2.9, "obtainAllPrivilege": false, "obtainOtherPrivilege": false, "obtainUserPrivilege": false, "source": "nvd@nist.gov", "type": "Primary", "userInteractionRequired": false}], "cvssMetricV30": [{"cvssData": {"attackComplexity": "HIGH", "attackVector": "NETWORK", "availabilityImpact": "NONE", "baseScore": 4.4, "baseSeverity": "MEDIUM", "confidentialityImpact": "HIGH", "integrityImpact": "NONE", "privilegesRequired": "HIGH", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.0/AV:N/AC:H/PR:H/UI:N/S:U/C:H/I:N/A:N", "version": "3.0"}, "exploitabilityScore": 0.7, "impactScore": 3.6, "source": "psirt@us.ibm.com", "type": "Secondary"}], "cvssMetricV31": [{"cvssData": {"attackComplexity": "HIGH", "attackVector": "NETWORK", "availabilityImpact": "NONE", "baseScore": 4.4, "baseSeverity": "MEDIUM", "confidentialityImpact": "HIGH", "integrityImpact": "NONE", "privilegesRequired": "HIGH", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:U/C:H/I:N/A:N", "version": "3.1"}, "exploitabilityScore": 0.7, "impactScore": 3.6, "source": "nvd@nist.gov", "type": "Primary"}]}, "published": "2021-07-29T12:15:07.380", "references": [{"source": "psirt@us.ibm.com", "tags": ["VDB Entry", "Vendor Advisory"], "url": "https://exchange.xforce.ibmcloud.com/vulnerabilities/198232"}, {"source": "psirt@us.ibm.com", "tags": ["Vendor Advisory"], "url": "https://www.ibm.com/support/pages/node/6475619"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["VDB Entry", "Vendor Advisory"], "url": "https://exchange.xforce.ibmcloud.com/vulnerabilities/198232"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Vendor Advisory"], "url": "https://www.ibm.com/support/pages/node/6475619"}], "sourceIdentifier": "psirt@us.ibm.com", "vulnStatus": "Modified", "weaknesses": [{"description": [{"lang": "en", "value": "NVD-CWE-noinfo"}], "source": "nvd@nist.gov", "type": "Primary"}]}

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