{
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        "providerMetadata": {
          "dateUpdated": "2024-08-03T15:32:09.975Z",
          "orgId": "af854a3a-2127-422b-91ae-364da2661108",
          "shortName": "CVE"
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        "references": [
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            "tags": [
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              "x_transferred"
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            "url": "https://kb.juniper.net/JSA11092"
          }
        ],
        "title": "CVE Program Container"
      }
    ],
    "cna": {
      "affected": [
        {
          "platforms": [
            "MX Series, EX9200 Series"
          ],
          "product": "Junos OS",
          "vendor": "Juniper Networks",
          "versions": [
            {
              "status": "affected",
              "version": "17.3R3-S8"
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            {
              "status": "affected",
              "version": "17.4R3-S2"
            },
            {
              "status": "unaffected",
              "version": "18.1"
            },
            {
              "status": "unaffected",
              "version": "19.1"
            },
            {
              "status": "unaffected",
              "version": "19.3"
            },
            {
              "status": "unaffected",
              "version": "20.1"
            },
            {
              "changes": [
                {
                  "at": "18.2R3-S6",
                  "status": "unaffected"
                }
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              "status": "affected",
              "version": "18.2R3-S4",
              "versionType": "custom"
            },
            {
              "changes": [
                {
                  "at": "18.3R3-S4",
                  "status": "unaffected"
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              ],
              "lessThan": "18.3*",
              "status": "affected",
              "version": "18.3R3-S2",
              "versionType": "custom"
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            {
              "changes": [
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                  "at": "18.4R3-S6",
                  "status": "unaffected"
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              ],
              "lessThan": "18.4*",
              "status": "affected",
              "version": "18.4R3-S1",
              "versionType": "custom"
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            {
              "changes": [
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                  "status": "unaffected"
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              "status": "affected",
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              "versionType": "custom"
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              "changes": [
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                  "at": "19.4R2-S3, 19.4R3",
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              "status": "affected",
              "version": "19.4R2",
              "versionType": "custom"
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            {
              "changes": [
                {
                  "at": "20.2R1-S3, 20.2R2",
                  "status": "unaffected"
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              "lessThan": "20.2*",
              "status": "affected",
              "version": "20.2R1",
              "versionType": "custom"
            }
          ]
        }
      ],
      "configurations": [
        {
          "lang": "en",
          "value": "This issue may occur when the IRB interface is configured and mapped to a VPLS instance or a Bridge-Domain\n\nIn the scenario where the IRB interface is mapped to a Bridge-Domain, the minimum configuration stanzas required related to this issue are the following:\n  [bridge-domains \u003cdomain_name\u003e routing-interface  irb.\u003cunit_number\u003e]\nin combination with:\n  [bridge-domains \u003cdomain_name\u003e  domain-type bridge]\n\nIn the scenario where the IRB interface is mapped to a VPLS instance, the minimum configuration stanzas required related to this issue are the following:\n  [routing-instances \u003cinstance_name\u003e instance-type vpls]\nin combination with:\n  [routing-instances \u003cinstance_name\u003e routing-interface irb.\u003cunit_number\u003e]"
        }
      ],
      "datePublic": "2021-01-13T00:00:00.000Z",
      "descriptions": [
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          "lang": "en",
          "value": "On Juniper Networks MX Series and EX9200 Series platforms with Trio-based MPC (Modular Port Concentrator) where Integrated Routing and Bridging (IRB) interface is configured and it is mapped to a VPLS instance or a Bridge-Domain, certain network events at Customer Edge (CE) device may cause memory leak in the MPC which can cause an out of memory and MPC restarts. When this issue occurs, there will be temporary traffic interruption until the MPC is restored. An administrator can use the following CLI command to monitor the status of memory usage level of the MPC: user@device\u003e show system resource-monitor fpc FPC Resource Usage Summary Free Heap Mem Watermark : 20 % Free NH Mem Watermark : 20 % Free Filter Mem Watermark : 20 % * - Watermark reached Slot # % Heap Free RTT Average RTT 1 87 PFE # % ENCAP mem Free % NH mem Free % FW mem Free 0 NA 88 99 1 NA 89 99 When the issue is occurring, the value of \u201c% NH mem Free\u201d will go down until the MPC restarts. This issue affects MX Series and EX9200 Series with Trio-based PFEs (Packet Forwarding Engines). Please refer to https://kb.juniper.net/KB25385 for the list of Trio-based PFEs. This issue affects Juniper Networks Junos OS on MX Series, EX9200 Series: 17.3R3-S8; 17.4R3-S2; 18.2R3-S4, 18.2R3-S5; 18.3R3-S2, 18.3R3-S3; 18.4 versions starting from 18.4R3-S1 and later versions prior to 18.4R3-S6; 19.2 versions starting from 19.2R2 and later versions prior to 19.2R3-S1; 19.4 versions starting from 19.4R2 and later versions prior to 19.4R2-S3, 19.4R3; 20.2 versions starting from 20.2R1 and later versions prior to 20.2R1-S3, 20.2R2. This issue does not affect Juniper Networks Junos OS: 18.1, 19.1, 19.3, 20.1."
        }
      ],
      "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": 7.5,
            "baseSeverity": "HIGH",
            "confidentialityImpact": "NONE",
            "integrityImpact": "NONE",
            "privilegesRequired": "NONE",
            "scope": "UNCHANGED",
            "userInteraction": "NONE",
            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
            "version": "3.1"
          }
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "cweId": "CWE-400",
              "description": "CWE-400 Uncontrolled Resource Consumption",
              "lang": "en",
              "type": "CWE"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2021-01-15T17:35:51.000Z",
        "orgId": "8cbe9d5a-a066-4c94-8978-4b15efeae968",
        "shortName": "juniper"
      },
      "references": [
        {
          "tags": [
            "x_refsource_CONFIRM"
          ],
          "url": "https://kb.juniper.net/JSA11092"
        }
      ],
      "solutions": [
        {
          "lang": "en",
          "value": "The following software releases have been updated to resolve this specific issue:  17.3R3-S9, 17.4R3-S3, 18.2R3-S6, 18.3R3-S4, 18.4R3-S6, 19.2R3-S1, 19.4R2-S3, 19.4R3, 20.2R1-S3, 20.2R2, 20.3R1, and all subsequent releases.\nThe fix has been proactively committed to other releases as well."
        }
      ],
      "source": {
        "advisory": "JSA11092",
        "defect": [
          "1525226"
        ],
        "discovery": "USER"
      },
      "title": "Junos OS: MX Series, EX9200 Series: Trio-based MPC memory leak when Integrated Routing and Bridging (IRB) interface is mapped to a VPLS instance or a Bridge-Domain",
      "workarounds": [
        {
          "lang": "en",
          "value": "There are no viable workarounds for this issue."
        }
      ],
      "x_generator": {
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      "x_legacyV4Record": {
        "CVE_data_meta": {
          "ASSIGNER": "sirt@juniper.net",
          "DATE_PUBLIC": "2021-01-13T17:00:00.000Z",
          "ID": "CVE-2021-0202",
          "STATE": "PUBLIC",
          "TITLE": "Junos OS: MX Series, EX9200 Series: Trio-based MPC memory leak when Integrated Routing and Bridging (IRB) interface is mapped to a VPLS instance or a Bridge-Domain"
        },
        "affects": {
          "vendor": {
            "vendor_data": [
              {
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                            "platform": "MX Series, EX9200 Series",
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                            "platform": "MX Series, EX9200 Series",
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                          {
                            "platform": "MX Series, EX9200 Series",
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                            "version_affected": "\u003c",
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                            "version_value": "19.2R3-S1"
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                          {
                            "platform": "MX Series, EX9200 Series",
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                          {
                            "platform": "MX Series, EX9200 Series",
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            "lang": "en",
            "value": "This issue may occur when the IRB interface is configured and mapped to a VPLS instance or a Bridge-Domain\n\nIn the scenario where the IRB interface is mapped to a Bridge-Domain, the minimum configuration stanzas required related to this issue are the following:\n  [bridge-domains \u003cdomain_name\u003e routing-interface  irb.\u003cunit_number\u003e]\nin combination with:\n  [bridge-domains \u003cdomain_name\u003e  domain-type bridge]\n\nIn the scenario where the IRB interface is mapped to a VPLS instance, the minimum configuration stanzas required related to this issue are the following:\n  [routing-instances \u003cinstance_name\u003e instance-type vpls]\nin combination with:\n  [routing-instances \u003cinstance_name\u003e routing-interface irb.\u003cunit_number\u003e]"
          }
        ],
        "data_format": "MITRE",
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              "lang": "eng",
              "value": "On Juniper Networks MX Series and EX9200 Series platforms with Trio-based MPC (Modular Port Concentrator) where Integrated Routing and Bridging (IRB) interface is configured and it is mapped to a VPLS instance or a Bridge-Domain, certain network events at Customer Edge (CE) device may cause memory leak in the MPC which can cause an out of memory and MPC restarts. When this issue occurs, there will be temporary traffic interruption until the MPC is restored. An administrator can use the following CLI command to monitor the status of memory usage level of the MPC: user@device\u003e show system resource-monitor fpc FPC Resource Usage Summary Free Heap Mem Watermark : 20 % Free NH Mem Watermark : 20 % Free Filter Mem Watermark : 20 % * - Watermark reached Slot # % Heap Free RTT Average RTT 1 87 PFE # % ENCAP mem Free % NH mem Free % FW mem Free 0 NA 88 99 1 NA 89 99 When the issue is occurring, the value of \u201c% NH mem Free\u201d will go down until the MPC restarts. This issue affects MX Series and EX9200 Series with Trio-based PFEs (Packet Forwarding Engines). Please refer to https://kb.juniper.net/KB25385 for the list of Trio-based PFEs. This issue affects Juniper Networks Junos OS on MX Series, EX9200 Series: 17.3R3-S8; 17.4R3-S2; 18.2R3-S4, 18.2R3-S5; 18.3R3-S2, 18.3R3-S3; 18.4 versions starting from 18.4R3-S1 and later versions prior to 18.4R3-S6; 19.2 versions starting from 19.2R2 and later versions prior to 19.2R3-S1; 19.4 versions starting from 19.4R2 and later versions prior to 19.4R2-S3, 19.4R3; 20.2 versions starting from 20.2R1 and later versions prior to 20.2R1-S3, 20.2R2. This issue does not affect Juniper Networks Junos OS: 18.1, 19.1, 19.3, 20.1."
            }
          ]
        },
        "exploit": [
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          ],
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            "value": "There are no viable workarounds for this issue."
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    "assignerShortName": "juniper",
    "cveId": "CVE-2021-0202",
    "datePublished": "2021-01-15T17:35:51.550Z",
    "dateReserved": "2020-10-27T00:00:00.000Z",
    "dateUpdated": "2024-09-17T00:31:32.694Z",
    "state": "PUBLISHED"
  },
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}