{"affected":[{"affectedData":[{"product":"MQ","vendor":"IBM","versions":[{"status":"affected","version":"8.0"},{"status":"affected","version":"9.0.LTS"},{"status":"affected","version":"9.1.LTS"},{"status":"affected","version":"9.1.CD"}]}],"source":"psirt@us.ibm.com"}],"configurations":[{"nodes":[{"cpeMatch":[{"criteria":"cpe:2.3:a:ibm:mq:*:*:*:*:*:*:*:*","matchCriteriaId":"8E9843A4-04F5-4511-AFDE-E10FE9EEA656","versionEndExcluding":"8.0.0.15","versionStartIncluding":"8.0.0.0","vulnerable":true},{"criteria":"cpe:2.3:a:ibm:mq:*:*:*:*:lts:*:*:*","matchCriteriaId":"03F00921-9822-4065-876C-1B53D19989FA","versionEndExcluding":"9.0.0.10","versionStartIncluding":"9.0.0.0","vulnerable":true},{"criteria":"cpe:2.3:a:ibm:mq:*:*:*:*:continuous_delivery:*:*:*","matchCriteriaId":"8AB35A75-BE63-4CD3-AB00-DF7FC284A2C0","versionEndExcluding":"9.1.5","versionStartIncluding":"9.1.0","vulnerable":true},{"criteria":"cpe:2.3:a:ibm:mq:*:*:*:*:lts:*:*:*","matchCriteriaId":"92E9574E-C0C0-490E-8B5D-E9F90B109302","versionEndExcluding":"9.1.0.5","versionStartIncluding":"9.1.0.0","vulnerable":true}],"negate":false,"operator":"OR"},{"cpeMatch":[{"criteria":"cpe:2.3:o:hp:hp-ux:-:*:*:*:*:*:*:*","matchCriteriaId":"F480AA32-841A-4E68-9343-B2E7548B0A0C","vulnerable":false},{"criteria":"cpe:2.3:o:ibm:aix:-:*:*:*:*:*:*:*","matchCriteriaId":"E492C463-D76E-49B7-A4D4-3B499E422D89","vulnerable":false},{"criteria":"cpe:2.3:o:linux:linux_kernel:-:*:*:*:*:*:*:*","matchCriteriaId":"703AF700-7A70-47E2-BC3A-7FD03B3CA9C1","vulnerable":false},{"criteria":"cpe:2.3:o:microsoft:windows:-:*:*:*:*:*:*:*","matchCriteriaId":"A2572D17-1DE6-457B-99CC-64AFD54487EA","vulnerable":false},{"criteria":"cpe:2.3:o:oracle:solaris:-:*:*:*:*:*:*:*","matchCriteriaId":"91F372EA-3A78-4703-A457-751B2C98D796","vulnerable":false}],"negate":false,"operator":"OR"}],"operator":"AND"}],"cveTags":[],"descriptions":[{"lang":"en","value":"IBM MQ Appliance and IBM MQ AMQP Channels 8.0, 9.0 LTS, 9.1 LTS, and 9.1 CD do not correctly block or allow clients based on the certificate distinguished name SSLPEER setting. IBM X-Force ID: 177403."},{"lang":"es","value":"IBM MQ Appliance e IBM MQ AMQP Channels versiones 8.0, 9.0 LTS, 9.1 LTS y 9.1 CD, no bloquean ni habilitan correctamente a los clientes basados en la configuración SSLPEER del nombre distinguido del certificado. IBM X-Force ID: 177403"}],"id":"CVE-2020-4320","lastModified":"2026-06-17T03:19:49.647","metrics":{"cvssMetricV2":[{"acInsufInfo":false,"baseSeverity":"MEDIUM","cvssData":{"accessComplexity":"LOW","accessVector":"NETWORK","authentication":"SINGLE","availabilityImpact":"PARTIAL","baseScore":4.0,"confidentialityImpact":"NONE","integrityImpact":"NONE","vectorString":"AV:N/AC:L/Au:S/C:N/I:N/A:P","version":"2.0"},"exploitabilityScore":8.0,"impactScore":2.9,"obtainAllPrivilege":false,"obtainOtherPrivilege":false,"obtainUserPrivilege":false,"source":"nvd@nist.gov","type":"Primary","userInteractionRequired":false}],"cvssMetricV30":[{"cvssData":{"attackComplexity":"HIGH","attackVector":"NETWORK","availabilityImpact":"HIGH","baseScore":5.3,"baseSeverity":"MEDIUM","confidentialityImpact":"NONE","integrityImpact":"NONE","privilegesRequired":"LOW","scope":"UNCHANGED","userInteraction":"NONE","vectorString":"CVSS:3.0/AV:N/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H","version":"3.0"},"exploitabilityScore":1.6,"impactScore":3.6,"source":"psirt@us.ibm.com","type":"Secondary"}],"cvssMetricV31":[{"cvssData":{"attackComplexity":"LOW","attackVector":"NETWORK","availabilityImpact":"HIGH","baseScore":6.5,"baseSeverity":"MEDIUM","confidentialityImpact":"NONE","integrityImpact":"NONE","privilegesRequired":"LOW","scope":"UNCHANGED","userInteraction":"NONE","vectorString":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H","version":"3.1"},"exploitabilityScore":2.8,"impactScore":3.6,"source":"nvd@nist.gov","type":"Primary"}]},"published":"2020-06-16T14:15:11.463","references":[{"source":"psirt@us.ibm.com","tags":["VDB Entry","Vendor Advisory"],"url":"https://exchange.xforce.ibmcloud.com/vulnerabilities/177403"},{"source":"psirt@us.ibm.com","tags":["Vendor Advisory"],"url":"https://www.ibm.com/support/pages/node/5736885"},{"source":"af854a3a-2127-422b-91ae-364da2661108","tags":["VDB Entry","Vendor Advisory"],"url":"https://exchange.xforce.ibmcloud.com/vulnerabilities/177403"},{"source":"af854a3a-2127-422b-91ae-364da2661108","tags":["Vendor Advisory"],"url":"https://www.ibm.com/support/pages/node/5736885"}],"sourceIdentifier":"psirt@us.ibm.com","vulnStatus":"Modified","weaknesses":[{"description":[{"lang":"en","value":"CWE-295"}],"source":"nvd@nist.gov","type":"Primary"}]}