{"containers":{"cna":{"affected":[{"platforms":["QFX Series"],"product":"Junos OS","vendor":"Juniper Networks","versions":[{"lessThan":"17.3R3-S10","status":"affected","version":"unspecified","versionType":"custom"},{"lessThan":"17.4R2-S12, 17.4R3-S3","status":"affected","version":"17.4","versionType":"custom"},{"lessThan":"18.1R3-S11","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":"18.4R2-S5, 18.4R3-S5","status":"affected","version":"18.4","versionType":"custom"},{"lessThan":"19.1R1-S6, 19.1R2-S2, 19.1R3-S3","status":"affected","version":"19.1","versionType":"custom"},{"lessThan":"19.2R1-S5, 19.2R3-S1","status":"affected","version":"19.2","versionType":"custom"},{"lessThan":"19.3R2-S5, 19.3R3","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":"20.2R1-S2, 20.2R2","status":"affected","version":"20.2","versionType":"custom"}]}],"configurations":[{"lang":"en","value":"A sample IRB configuration using virtual gateway addresses is shown below:\n\n  user@junos# show interfaces irb.1162 \n  virtual-gateway-accept-data;\n  family inet {\n      address 192.168.190.125/25 {\n          virtual-gateway-address 192.168.190.1;\n      }\n      address 192.168.190.253/25 {\n          virtual-gateway-address 192.168.190.129;\n      }\n  }\n  virtual-gateway-v4-mac 00:08:2b:03:05:07;"}],"datePublic":"2021-01-13T00:00:00.000Z","descriptions":[{"lang":"en","value":"In an EVPN/VXLAN scenario, if an IRB interface with a virtual gateway address (VGA) is configured on a PE, a traffic loop may occur upon receipt of specific IP multicast traffic. The traffic loop will cause interface traffic to increase abnormally, ultimately leading to a Denial of Service (DoS) in packet processing. The following command could be used to monitor the interface traffic: user@junos> monitor interface traffic Interface Link Input packets (pps) Output packets (pps) et-0/0/1 Up 6492089274364 (70994959) 6492089235319 (70994956) et-0/0/25 Up 343458103 (1) 156844 (0) ae0 Up 9132519197257 (70994959) 9132519139454 (70994956) This issue affects Juniper Networks Junos OS on QFX Series: all versions prior to 17.3R3-S10; 17.4 versions prior to 17.4R2-S12, 17.4R3-S3; 18.1 versions prior to 18.1R3-S11; 18.2 versions prior to 18.2R3-S6; 18.3 versions prior to 18.3R3-S4; 18.4 versions prior to 18.4R2-S5, 18.4R3-S5; 19.1 versions prior to 19.1R1-S6, 19.1R2-S2, 19.1R3-S3; 19.2 versions prior to 19.2R1-S5, 19.2R3-S1; 19.3 versions prior to 19.3R2-S5, 19.3R3; 19.4 versions prior to 19.4R2-S2, 19.4R3; 20.1 versions prior to 20.1R2; 20.2 versions prior to 20.2R1-S2, 20.2R2."}],"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":6.5,"baseSeverity":"MEDIUM","confidentialityImpact":"NONE","integrityImpact":"NONE","privilegesRequired":"NONE","scope":"UNCHANGED","userInteraction":"NONE","vectorString":"CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/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"}]}],"providerMetadata":{"dateUpdated":"2021-01-15T17:36:01.000Z","orgId":"8cbe9d5a-a066-4c94-8978-4b15efeae968","shortName":"juniper"},"references":[{"tags":["x_refsource_CONFIRM"],"url":"https://kb.juniper.net/JSA11111"}],"solutions":[{"lang":"en","value":"The following software releases have been updated to resolve this specific issue: Junos OS 17.3R3-S10, 17.4R2-S12, 17.4R3-S3, 18.1R3-S11, 18.2R3-S6, 18.3R3-S4, 18.4R2-S5, 18.4R3-S5, 19.1R1-S6, 19.1R2-S2, 19.1R3-S3, 19.2R1-S5, 19.2R3-S1, 19.3R2-S5, 19.3R3, 19.4R2-S2, 19.4R3, 20.1R2, 20.2R1-S2, 20.2R2, 20.3R1, and all subsequent releases."}],"source":{"advisory":"JSA11111","defect":["1518537"],"discovery":"USER"},"title":"Junos OS: QFX Series: Traffic loop Denial of Service (DoS) upon receipt of specific IP multicast traffic","workarounds":[{"lang":"en","value":"There are no known workarounds for this issue."}],"x_generator":{"engine":"Vulnogram 0.0.9"},"x_legacyV4Record":{"CVE_data_meta":{"ASSIGNER":"sirt@juniper.net","DATE_PUBLIC":"2021-01-13T17:00:00.000Z","ID":"CVE-2021-0221","STATE":"PUBLIC","TITLE":"Junos OS: QFX Series: Traffic loop Denial of Service (DoS) upon receipt of specific IP multicast traffic"},"affects":{"vendor":{"vendor_data":[{"product":{"product_data":[{"product_name":"Junos OS","version":{"version_data":[{"platform":"QFX Series","version_affected":"<","version_value":"17.3R3-S10"},{"platform":"QFX Series","version_affected":"<","version_name":"17.4","version_value":"17.4R2-S12, 17.4R3-S3"},{"platform":"QFX Series","version_affected":"<","version_name":"18.1","version_value":"18.1R3-S11"},{"platform":"QFX Series","version_affected":"<","version_name":"18.2","version_value":"18.2R3-S6"},{"platform":"QFX Series","version_affected":"<","version_name":"18.3","version_value":"18.3R3-S4"},{"platform":"QFX Series","version_affected":"<","version_name":"18.4","version_value":"18.4R2-S5, 18.4R3-S5"},{"platform":"QFX Series","version_affected":"<","version_name":"19.1","version_value":"19.1R1-S6, 19.1R2-S2, 19.1R3-S3"},{"platform":"QFX Series","version_affected":"<","version_name":"19.2","version_value":"19.2R1-S5, 19.2R3-S1"},{"platform":"QFX Series","version_affected":"<","version_name":"19.3","version_value":"19.3R2-S5, 19.3R3"},{"platform":"QFX Series","version_affected":"<","version_name":"19.4","version_value":"19.4R2-S2, 19.4R3"},{"platform":"QFX Series","version_affected":"<","version_name":"20.1","version_value":"20.1R2"},{"platform":"QFX Series","version_affected":"<","version_name":"20.2","version_value":"20.2R1-S2, 20.2R2"}]}}]},"vendor_name":"Juniper Networks"}]}},"configuration":[{"lang":"en","value":"A sample IRB configuration using virtual gateway addresses is shown below:\n\n  user@junos# show interfaces irb.1162 \n  virtual-gateway-accept-data;\n  family inet {\n      address 192.168.190.125/25 {\n          virtual-gateway-address 192.168.190.1;\n      }\n      address 192.168.190.253/25 {\n          virtual-gateway-address 192.168.190.129;\n      }\n  }\n  virtual-gateway-v4-mac 00:08:2b:03:05:07;"}],"data_format":"MITRE","data_type":"CVE","data_version":"4.0","description":{"description_data":[{"lang":"eng","value":"In an EVPN/VXLAN scenario, if an IRB interface with a virtual gateway address (VGA) is configured on a PE, a traffic loop may occur upon receipt of specific IP multicast traffic. The traffic loop will cause interface traffic to increase abnormally, ultimately leading to a Denial of Service (DoS) in packet processing. The following command could be used to monitor the interface traffic: user@junos> monitor interface traffic Interface Link Input packets (pps) Output packets (pps) et-0/0/1 Up 6492089274364 (70994959) 6492089235319 (70994956) et-0/0/25 Up 343458103 (1) 156844 (0) ae0 Up 9132519197257 (70994959) 9132519139454 (70994956) This issue affects Juniper Networks Junos OS on QFX Series: all versions prior to 17.3R3-S10; 17.4 versions prior to 17.4R2-S12, 17.4R3-S3; 18.1 versions prior to 18.1R3-S11; 18.2 versions prior to 18.2R3-S6; 18.3 versions prior to 18.3R3-S4; 18.4 versions prior to 18.4R2-S5, 18.4R3-S5; 19.1 versions prior to 19.1R1-S6, 19.1R2-S2, 19.1R3-S3; 19.2 versions prior to 19.2R1-S5, 19.2R3-S1; 19.3 versions prior to 19.3R2-S5, 19.3R3; 19.4 versions prior to 19.4R2-S2, 19.4R3; 20.1 versions prior to 20.1R2; 20.2 versions prior to 20.2R1-S2, 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":"ADJACENT_NETWORK","availabilityImpact":"HIGH","baseScore":6.5,"baseSeverity":"MEDIUM","confidentialityImpact":"NONE","integrityImpact":"NONE","privilegesRequired":"NONE","scope":"UNCHANGED","userInteraction":"NONE","vectorString":"CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/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"}]}]},"references":{"reference_data":[{"name":"https://kb.juniper.net/JSA11111","refsource":"CONFIRM","url":"https://kb.juniper.net/JSA11111"}]},"solution":[{"lang":"en","value":"The following software releases have been updated to resolve this specific issue: Junos OS 17.3R3-S10, 17.4R2-S12, 17.4R3-S3, 18.1R3-S11, 18.2R3-S6, 18.3R3-S4, 18.4R2-S5, 18.4R3-S5, 19.1R1-S6, 19.1R2-S2, 19.1R3-S3, 19.2R1-S5, 19.2R3-S1, 19.3R2-S5, 19.3R3, 19.4R2-S2, 19.4R3, 20.1R2, 20.2R1-S2, 20.2R2, 20.3R1, and all subsequent releases."}],"source":{"advisory":"JSA11111","defect":["1518537"],"discovery":"USER"},"work_around":[{"lang":"en","value":"There are no known workarounds for this issue."}]}},"adp":[{"providerMetadata":{"orgId":"af854a3a-2127-422b-91ae-364da2661108","shortName":"CVE","dateUpdated":"2024-08-03T15:32:10.040Z"},"title":"CVE Program Container","references":[{"tags":["x_refsource_CONFIRM","x_transferred"],"url":"https://kb.juniper.net/JSA11111"}]}]},"cveMetadata":{"assignerOrgId":"8cbe9d5a-a066-4c94-8978-4b15efeae968","assignerShortName":"juniper","cveId":"CVE-2021-0221","datePublished":"2021-01-15T17:36:01.999Z","dateReserved":"2020-10-27T00:00:00.000Z","dateUpdated":"2024-09-16T18:08:09.691Z","state":"PUBLISHED"},"dataType":"CVE_RECORD","dataVersion":"5.1"}