{"containers":{"cna":{"affected":[{"product":"Junos OS","vendor":"Juniper Networks","versions":[{"lessThan":"17.3R3-S12","status":"affected","version":"17.3","versionType":"custom"},{"lessThan":"17.4R3-S5","status":"affected","version":"17.4","versionType":"custom"},{"lessThan":"18.1R3-S13","status":"affected","version":"18.1","versionType":"custom"},{"lessThan":"18.2R3-S8","status":"affected","version":"18.2","versionType":"custom"},{"lessThan":"18.3R3-S5","status":"affected","version":"18.3","versionType":"custom"},{"lessThan":"18.4R1-S8, 18.4R3-S7","status":"affected","version":"18.4","versionType":"custom"},{"lessThan":"19.1R3-S5","status":"affected","version":"19.1","versionType":"custom"},{"lessThan":"19.2R3-S2","status":"affected","version":"19.2","versionType":"custom"},{"lessThan":"19.3R3-S2","status":"affected","version":"19.3","versionType":"custom"},{"lessThan":"19.4R3-S2","status":"affected","version":"19.4","versionType":"custom"},{"lessThan":"20.1R3","status":"affected","version":"20.1","versionType":"custom"},{"lessThan":"20.2R2-S3, 20.2R3","status":"affected","version":"20.2","versionType":"custom"},{"lessThan":"20.3R2","status":"affected","version":"20.3","versionType":"custom"},{"lessThan":"20.4R2","status":"affected","version":"20.4","versionType":"custom"}]}],"configurations":[{"lang":"en","value":"The example of DHCPv6 local server configuration stanza affected by this issue is:\n   [system services dhcp-local-server dhcpv6]\n\nThe example of configuration stanza for DHCPv6 Relay Agent affected by this issue is: \n   [forwarding-options dhcp-relay dhcpv6]"}],"datePublic":"2021-04-14T00:00:00.000Z","descriptions":[{"lang":"en","value":"On Juniper Networks Junos OS platforms configured as DHCPv6 local server or DHCPv6 Relay Agent, the Juniper Networks Dynamic Host Configuration Protocol Daemon (JDHCPD) process might crash if a malformed DHCPv6 packet is received, resulting in a restart of the daemon. The daemon automatically restarts without intervention, but continued receipt and processing of this packet will create a sustained Denial of Service (DoS) condition. This issue only affects DHCPv6. DHCPv4 is not affected by this issue. This issue affects Juniper Networks Junos OS: 17.3 versions prior to 17.3R3-S12; 17.4 versions prior to 17.4R3-S5; 18.1 versions prior to 18.1R3-S13; 18.2 versions prior to 18.2R3-S8; 18.3 versions prior to 18.3R3-S5; 18.4 versions prior to 18.4R1-S8, 18.4R3-S7; 19.1 versions prior to 19.1R3-S5; 19.2 versions prior to 19.2R3-S2; 19.3 versions prior to 19.3R3-S2; 19.4 versions prior to 19.4R3-S2; 20.1 versions prior to 20.1R3; 20.2 versions prior to 20.2R2-S3, 20.2R3; 20.3 versions prior to 20.3R2; 20.4 versions prior to 20.4R2."}],"exploits":[{"lang":"en","value":"Juniper SIRT is not aware of any malicious exploitation of this vulnerability."}],"metrics":[{"cvssV3_1":{"attackComplexity":"LOW","attackVector":"ADJACENT_NETWORK","availabilityImpact":"HIGH","baseScore":7.4,"baseSeverity":"HIGH","confidentialityImpact":"NONE","integrityImpact":"NONE","privilegesRequired":"NONE","scope":"CHANGED","userInteraction":"NONE","vectorString":"CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H","version":"3.1"}}],"problemTypes":[{"descriptions":[{"cweId":"CWE-703","description":"CWE-703 Improper Check or Handling of Exceptional Conditions","lang":"en","type":"CWE"}]},{"descriptions":[{"description":"Denial of Service (DoS)","lang":"en","type":"text"}]}],"providerMetadata":{"dateUpdated":"2021-04-22T19:37:05.000Z","orgId":"8cbe9d5a-a066-4c94-8978-4b15efeae968","shortName":"juniper"},"references":[{"tags":["x_refsource_MISC"],"url":"https://kb.juniper.net/JSA11168"}],"solutions":[{"lang":"en","value":"The following software releases have been updated to resolve this specific issue: Junos OS 17.3R3-S12, 17.4R3-S5, 18.1R3-S13, 18.2R3-S8, 18.3R3-S5, 18.4R1-S8, 18.4R3-S7, 19.1R3-S5, 19.2R3-S2, 19.3R3-S2, 19.4R3-S2, 20.1R3, 20.2R2-S3, 20.2R3, 20.3R2, 20.4R2, 21.1R1, and all subsequent releases."}],"source":{"advisory":"JSA11168","defect":["1564434"],"discovery":"USER"},"title":"Junos OS: Receipt of malformed DHCPv6 packets causes jdhcpd to crash and restart.","workarounds":[{"lang":"en","value":"There are no viable workarounds for this issue."}],"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-2021-0240","STATE":"PUBLIC","TITLE":"Junos OS: Receipt of malformed DHCPv6 packets causes jdhcpd to crash and restart."},"affects":{"vendor":{"vendor_data":[{"product":{"product_data":[{"product_name":"Junos OS","version":{"version_data":[{"version_affected":"<","version_name":"17.3","version_value":"17.3R3-S12"},{"version_affected":"<","version_name":"17.4","version_value":"17.4R3-S5"},{"version_affected":"<","version_name":"18.1","version_value":"18.1R3-S13"},{"version_affected":"<","version_name":"18.2","version_value":"18.2R3-S8"},{"version_affected":"<","version_name":"18.3","version_value":"18.3R3-S5"},{"version_affected":"<","version_name":"18.4","version_value":"18.4R1-S8, 18.4R3-S7"},{"version_affected":"<","version_name":"19.1","version_value":"19.1R3-S5"},{"version_affected":"<","version_name":"19.2","version_value":"19.2R3-S2"},{"version_affected":"<","version_name":"19.3","version_value":"19.3R3-S2"},{"version_affected":"<","version_name":"19.4","version_value":"19.4R3-S2"},{"version_affected":"<","version_name":"20.1","version_value":"20.1R3"},{"version_affected":"<","version_name":"20.2","version_value":"20.2R2-S3, 20.2R3"},{"version_affected":"<","version_name":"20.3","version_value":"20.3R2"},{"version_affected":"<","version_name":"20.4","version_value":"20.4R2"}]}}]},"vendor_name":"Juniper Networks"}]}},"configuration":[{"lang":"en","value":"The example of DHCPv6 local server configuration stanza affected by this issue is:\n   [system services dhcp-local-server dhcpv6]\n\nThe example of configuration stanza for DHCPv6 Relay Agent affected by this issue is: \n   [forwarding-options dhcp-relay dhcpv6]"}],"data_format":"MITRE","data_type":"CVE","data_version":"4.0","description":{"description_data":[{"lang":"eng","value":"On Juniper Networks Junos OS platforms configured as DHCPv6 local server or DHCPv6 Relay Agent, the Juniper Networks Dynamic Host Configuration Protocol Daemon (JDHCPD) process might crash if a malformed DHCPv6 packet is received, resulting in a restart of the daemon. The daemon automatically restarts without intervention, but continued receipt and processing of this packet will create a sustained Denial of Service (DoS) condition. This issue only affects DHCPv6. DHCPv4 is not affected by this issue. This issue affects Juniper Networks Junos OS: 17.3 versions prior to 17.3R3-S12; 17.4 versions prior to 17.4R3-S5; 18.1 versions prior to 18.1R3-S13; 18.2 versions prior to 18.2R3-S8; 18.3 versions prior to 18.3R3-S5; 18.4 versions prior to 18.4R1-S8, 18.4R3-S7; 19.1 versions prior to 19.1R3-S5; 19.2 versions prior to 19.2R3-S2; 19.3 versions prior to 19.3R3-S2; 19.4 versions prior to 19.4R3-S2; 20.1 versions prior to 20.1R3; 20.2 versions prior to 20.2R2-S3, 20.2R3; 20.3 versions prior to 20.3R2; 20.4 versions prior to 20.4R2."}]},"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":"ADJACENT_NETWORK","availabilityImpact":"HIGH","baseScore":7.4,"baseSeverity":"HIGH","confidentialityImpact":"NONE","integrityImpact":"NONE","privilegesRequired":"NONE","scope":"CHANGED","userInteraction":"NONE","vectorString":"CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H","version":"3.1"}},"problemtype":{"problemtype_data":[{"description":[{"lang":"eng","value":"CWE-703 Improper Check or Handling of Exceptional Conditions"}]},{"description":[{"lang":"eng","value":"Denial of Service (DoS)"}]}]},"references":{"reference_data":[{"name":"https://kb.juniper.net/JSA11168","refsource":"MISC","url":"https://kb.juniper.net/JSA11168"}]},"solution":[{"lang":"en","value":"The following software releases have been updated to resolve this specific issue: Junos OS 17.3R3-S12, 17.4R3-S5, 18.1R3-S13, 18.2R3-S8, 18.3R3-S5, 18.4R1-S8, 18.4R3-S7, 19.1R3-S5, 19.2R3-S2, 19.3R3-S2, 19.4R3-S2, 20.1R3, 20.2R2-S3, 20.2R3, 20.3R2, 20.4R2, 21.1R1, and all subsequent releases."}],"source":{"advisory":"JSA11168","defect":["1564434"],"discovery":"USER"},"work_around":[{"lang":"en","value":"There are no viable workarounds for this issue."}]}},"adp":[{"providerMetadata":{"orgId":"af854a3a-2127-422b-91ae-364da2661108","shortName":"CVE","dateUpdated":"2024-08-03T15:32:10.102Z"},"title":"CVE Program Container","references":[{"tags":["x_refsource_MISC","x_transferred"],"url":"https://kb.juniper.net/JSA11168"}]}]},"cveMetadata":{"assignerOrgId":"8cbe9d5a-a066-4c94-8978-4b15efeae968","assignerShortName":"juniper","cveId":"CVE-2021-0240","datePublished":"2021-04-22T19:37:06.056Z","dateReserved":"2020-10-27T00:00:00.000Z","dateUpdated":"2024-09-16T20:26:48.246Z","state":"PUBLISHED"},"dataType":"CVE_RECORD","dataVersion":"5.1"}