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{
"CVE_data_meta": {
Juniper JSA publication 2021-01. See https://advisory.juniper.net for more information.
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"ASSIGNER": "sirt@juniper.net",
"DATE_PUBLIC": "2021-01-13T17:00:00.000Z",
"-Synchronized-Data."
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"ID": "CVE-2021-0221",
Juniper JSA publication 2021-01. See https://advisory.juniper.net for more information.
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"STATE": "PUBLIC",
"TITLE": "Junos OS: QFX Series: Traffic loop Denial of Service (DoS) upon receipt of specific IP multicast traffic"
"-Synchronized-Data."
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},
Juniper JSA publication 2021-01. See https://advisory.juniper.net for more information.
2021-01-15 12:27:39 -05:00
"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": "eng",
"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;\n"
}
],
"data_format": "MITRE",
"data_type": "CVE",
"data_version": "4.0",
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"description": {
"description_data": [
{
"lang": "eng",
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"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."
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}
]
Juniper JSA publication 2021-01. See https://advisory.juniper.net for more information.
2021-01-15 12:27:39 -05:00
},
"exploit": [
{
"lang": "eng",
"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": "eng",
"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.\n"
}
],
"source": {
"advisory": "JSA11111",
"defect": [
"1518537"
],
"discovery": "USER"
},
"work_around": [
{
"lang": "eng",
"value": "There are no known workarounds for this issue."
}
]
"-Synchronized-Data."
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}
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