{"containers":{"cna":{"affected":[{"product":"Junos OS","vendor":"Juniper Networks","versions":[{"lessThan":"17.4R3-S3","status":"affected","version":"unspecified","versionType":"custom"},{"lessThan":"18.1R3-S12","status":"affected","version":"18.1","versionType":"custom"},{"lessThan":"18.2R3-S6","status":"affected","version":"18.2","versionType":"custom"},{"lessThan":"18.3R3-S4","status":"affected","version":"18.3","versionType":"custom"},{"lessThan":"18.4R3-S6","status":"affected","version":"18.4","versionType":"custom"},{"lessThan":"19.1R3-S4","status":"affected","version":"19.1","versionType":"custom"},{"lessThan":"19.2R3-S1","status":"affected","version":"19.2","versionType":"custom"},{"lessThan":"19.3R3-S1","status":"affected","version":"19.3","versionType":"custom"},{"lessThan":"19.4R2-S2, 19.4R3","status":"affected","version":"19.4","versionType":"custom"},{"lessThan":"20.1R2","status":"affected","version":"20.1","versionType":"custom"},{"lessThan":"20.2R2","status":"affected","version":"20.2","versionType":"custom"}]}],"configurations":[{"lang":"en","value":"This issue requires J-Web to be enabled on the device.\n\nThe examples of the config stanza affected by this issue:\n  [system services web-management http]\n  [system services web-management https]"}],"datePublic":"2021-04-14T00:00:00.000Z","descriptions":[{"lang":"en","value":"The improper handling of client-side parameters in J-Web of Juniper Networks Junos OS allows an attacker to perform a number of different malicious actions against a target device when a user is authenticated to J-Web. An attacker may be able to supersede existing parameters, including hardcoded parameters within the HTTP/S session, access and exploit variables, bypass web application firewall rules or input validation mechanisms, and otherwise alter and modify J-Web's normal behavior. An attacker may be able to transition victims to malicious web services, or exfiltrate sensitive information from otherwise secure web forms. This issue affects: Juniper Networks Junos OS: All versions prior to 17.4R3-S3; 18.1 versions prior to 18.1R3-S12; 18.2 versions prior to 18.2R3-S6; 18.3 versions prior to 18.3R3-S4; 18.4 versions prior to 18.4R3-S6; 19.1 versions prior to 19.1R3-S4; 19.2 versions prior to 19.2R3-S1; 19.3 versions prior to 19.3R3-S1; 19.4 versions prior to 19.4R2-S2, 19.4R3; 20.1 versions prior to 20.1R2; 20.2 versions prior to 20.2R2."}],"exploits":[{"lang":"en","value":"Juniper SIRT is not aware of any malicious exploitation of this vulnerability."}],"metrics":[{"cvssV3_1":{"attackComplexity":"LOW","attackVector":"NETWORK","availabilityImpact":"HIGH","baseScore":8.8,"baseSeverity":"HIGH","confidentialityImpact":"HIGH","integrityImpact":"HIGH","privilegesRequired":"NONE","scope":"UNCHANGED","userInteraction":"REQUIRED","vectorString":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H","version":"3.1"}}],"problemTypes":[{"descriptions":[{"cweId":"CWE-233","description":"CWE-233: Improper Handling of Parameters","lang":"en","type":"CWE"}]}],"providerMetadata":{"dateUpdated":"2021-04-22T19:37:25.000Z","orgId":"8cbe9d5a-a066-4c94-8978-4b15efeae968","shortName":"juniper"},"references":[{"tags":["x_refsource_MISC"],"url":"https://kb.juniper.net/JSA11160"}],"solutions":[{"lang":"en","value":"The following software releases have been updated to resolve this specific issue: 17.4R3-S3, 18.1R3-S12, 18.2R3-S6, 18.3R3-S4, 18.4R3-S6, 19.1R3-S4, 19.2R3-S1, 19.3R3-S1, 19.4R2-S2, 19.4R3, 20.1R2, 20.2R2, 20.3R1, and all subsequent releases."}],"source":{"advisory":"JSA11160","defect":["1501588"],"discovery":"INTERNAL"},"title":"Junos OS: J-Web can be compromised through reflected client-side HTTP parameter pollution attacks.","workarounds":[{"lang":"en","value":"To reduce the risk of exploitation utilize common security BCPs to limit the exploitable surface by limiting access to network and device to trusted systems, administrators, networks and hosts. \n\nAccess the J-Web service from trusted hosts which may not be compromised by cross-site scripting attacks, for example, deploying jump hosts with no internet access.\n\nAlternatively, disable J-Web."}],"x_generator":{"engine":"Vulnogram 0.0.9"},"x_legacyV4Record":{"CVE_data_meta":{"ASSIGNER":"sirt@juniper.net","DATE_PUBLIC":"2021-04-14T16:00:00.000Z","ID":"CVE-2021-0269","STATE":"PUBLIC","TITLE":"Junos OS: J-Web can be compromised through reflected client-side HTTP parameter pollution attacks."},"affects":{"vendor":{"vendor_data":[{"product":{"product_data":[{"product_name":"Junos OS","version":{"version_data":[{"version_affected":"<","version_value":"17.4R3-S3"},{"version_affected":"<","version_name":"18.1","version_value":"18.1R3-S12"},{"version_affected":"<","version_name":"18.2","version_value":"18.2R3-S6"},{"version_affected":"<","version_name":"18.3","version_value":"18.3R3-S4"},{"version_affected":"<","version_name":"18.4","version_value":"18.4R3-S6"},{"version_affected":"<","version_name":"19.1","version_value":"19.1R3-S4"},{"version_affected":"<","version_name":"19.2","version_value":"19.2R3-S1"},{"version_affected":"<","version_name":"19.3","version_value":"19.3R3-S1"},{"version_affected":"<","version_name":"19.4","version_value":"19.4R2-S2, 19.4R3"},{"version_affected":"<","version_name":"20.1","version_value":"20.1R2"},{"version_affected":"<","version_name":"20.2","version_value":"20.2R2"}]}}]},"vendor_name":"Juniper Networks"}]}},"configuration":[{"lang":"en","value":"This issue requires J-Web to be enabled on the device.\n\nThe examples of the config stanza affected by this issue:\n  [system services web-management http]\n  [system services web-management https]"}],"data_format":"MITRE","data_type":"CVE","data_version":"4.0","description":{"description_data":[{"lang":"eng","value":"The improper handling of client-side parameters in J-Web of Juniper Networks Junos OS allows an attacker to perform a number of different malicious actions against a target device when a user is authenticated to J-Web. An attacker may be able to supersede existing parameters, including hardcoded parameters within the HTTP/S session, access and exploit variables, bypass web application firewall rules or input validation mechanisms, and otherwise alter and modify J-Web's normal behavior. An attacker may be able to transition victims to malicious web services, or exfiltrate sensitive information from otherwise secure web forms. This issue affects: Juniper Networks Junos OS: All versions prior to 17.4R3-S3; 18.1 versions prior to 18.1R3-S12; 18.2 versions prior to 18.2R3-S6; 18.3 versions prior to 18.3R3-S4; 18.4 versions prior to 18.4R3-S6; 19.1 versions prior to 19.1R3-S4; 19.2 versions prior to 19.2R3-S1; 19.3 versions prior to 19.3R3-S1; 19.4 versions prior to 19.4R2-S2, 19.4R3; 20.1 versions prior to 20.1R2; 20.2 versions prior to 20.2R2."}]},"exploit":[{"lang":"en","value":"Juniper SIRT is not aware of any malicious exploitation of this vulnerability."}],"generator":{"engine":"Vulnogram 0.0.9"},"impact":{"cvss":{"attackComplexity":"LOW","attackVector":"NETWORK","availabilityImpact":"HIGH","baseScore":8.8,"baseSeverity":"HIGH","confidentialityImpact":"HIGH","integrityImpact":"HIGH","privilegesRequired":"NONE","scope":"UNCHANGED","userInteraction":"REQUIRED","vectorString":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H","version":"3.1"}},"problemtype":{"problemtype_data":[{"description":[{"lang":"eng","value":"CWE-233: Improper Handling of Parameters"}]}]},"references":{"reference_data":[{"name":"https://kb.juniper.net/JSA11160","refsource":"MISC","url":"https://kb.juniper.net/JSA11160"}]},"solution":[{"lang":"en","value":"The following software releases have been updated to resolve this specific issue: 17.4R3-S3, 18.1R3-S12, 18.2R3-S6, 18.3R3-S4, 18.4R3-S6, 19.1R3-S4, 19.2R3-S1, 19.3R3-S1, 19.4R2-S2, 19.4R3, 20.1R2, 20.2R2, 20.3R1, and all subsequent releases."}],"source":{"advisory":"JSA11160","defect":["1501588"],"discovery":"INTERNAL"},"work_around":[{"lang":"en","value":"To reduce the risk of exploitation utilize common security BCPs to limit the exploitable surface by limiting access to network and device to trusted systems, administrators, networks and hosts. \n\nAccess the J-Web service from trusted hosts which may not be compromised by cross-site scripting attacks, for example, deploying jump hosts with no internet access.\n\nAlternatively, disable J-Web."}]}},"adp":[{"providerMetadata":{"orgId":"af854a3a-2127-422b-91ae-364da2661108","shortName":"CVE","dateUpdated":"2024-08-03T15:32:10.516Z"},"title":"CVE Program Container","references":[{"tags":["x_refsource_MISC","x_transferred"],"url":"https://kb.juniper.net/JSA11160"}]}]},"cveMetadata":{"assignerOrgId":"8cbe9d5a-a066-4c94-8978-4b15efeae968","assignerShortName":"juniper","cveId":"CVE-2021-0269","datePublished":"2021-04-22T19:37:25.649Z","dateReserved":"2020-10-27T00:00:00.000Z","dateUpdated":"2024-09-17T01:12:12.544Z","state":"PUBLISHED"},"dataType":"CVE_RECORD","dataVersion":"5.1"}