CVE-2021-0267 (GCVE-0-2021-0267)

Vulnerability from cvelistv5 – Published: 2021-04-22 19:37 – Updated: 2024-09-17 03:54
VLAI?
Summary
An Improper Input Validation vulnerability in the active-lease query portion in JDHCPD's DHCP Relay Agent of Juniper Networks Junos OS allows an attacker to cause a Denial of Service (DoS) by sending a crafted DHCP packet to the device thereby crashing the jdhcpd DHCP service. This is typically configured for Broadband Subscriber Sessions. Continued receipt and processing of this crafted packet will create a sustained Denial of Service (DoS) condition. This issue affects Juniper Networks Junos OS: 19.4 versions prior to 19.4R3-S1; 20.1 versions prior to 20.1R2-S1, 20.1R3; 20.2 versions prior to 20.2R3; 20.3 versions prior to 20.3R2. This issue does not affect Junos OS Evolved.
Severity ?
7.4 (High)
CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H
CWE
  • CWE-20 - Improper Input Validation
  • Denial of Service (DoS)
Assigner
References
Impacted products
Vendor Product Version
Juniper Networks Junos OS Affected: 19.4 , < 19.4R3-S1 (custom)
Affected: 20.1 , < 20.1R2-S1, 20.1R3 (custom)
Affected: 20.2 , < 20.2R3 (custom)
Affected: 20.3 , < 20.3R2 (custom)
Create a notification for this product.
Show details on NVD website
To clipboard 

{
  "containers": {
    "adp": [
      {
        "providerMetadata": {
          "dateUpdated": "2024-08-03T15:32:10.508Z",
          "orgId": "af854a3a-2127-422b-91ae-364da2661108",
          "shortName": "CVE"
        },
        "references": [
          {
            "tags": [
              "x_refsource_MISC",
              "x_transferred"
            ],
            "url": "https://kb.juniper.net/JSA11158"
          },
          {
            "tags": [
              "x_refsource_MISC",
              "x_transferred"
            ],
            "url": "https://www.juniper.net/documentation/us/en/software/junos/subscriber-mgmt-sessions/topics/ref/statement/active-leasequery-edit-forwarding-options.html"
          }
        ],
        "title": "CVE Program Container"
      }
    ],
    "cna": {
      "affected": [
        {
          "product": "Junos OS",
          "vendor": "Juniper Networks",
          "versions": [
            {
              "lessThan": "19.4R3-S1",
              "status": "affected",
              "version": "19.4",
              "versionType": "custom"
            },
            {
              "lessThan": "20.1R2-S1, 20.1R3",
              "status": "affected",
              "version": "20.1",
              "versionType": "custom"
            },
            {
              "lessThan": "20.2R3",
              "status": "affected",
              "version": "20.2",
              "versionType": "custom"
            },
            {
              "lessThan": "20.3R2",
              "status": "affected",
              "version": "20.3",
              "versionType": "custom"
            }
          ]
        }
      ],
      "configurations": [
        {
          "lang": "en",
          "value": "This issue requires active-lease query with none or greater optional settings to be configured in one or more hierarchy locations.\n\n  active-leasequery {\n    idle-timeout \"seconds\"; (optional)\n    peer-address \"address\"; (optional)\n    timeout \"seconds\"; (optional)\n    topology-discover; (optional)\n  }\n\nwith\n\n  [forwarding-options dhcp-relay],\n  [forwarding-options dhcp-relay dhcpv6],\n  [logical-systems logical-system-name ...],\n  [logical-systems logical-system-name routing-instances routing-instance-name ...],\n  [routing-instances routing-instance-name ...]"
        }
      ],
      "datePublic": "2021-04-14T00:00:00",
      "descriptions": [
        {
          "lang": "en",
          "value": "An Improper Input Validation vulnerability in the active-lease query portion in JDHCPD\u0027s DHCP Relay Agent of Juniper Networks Junos OS allows an attacker to cause a Denial of Service (DoS) by sending a crafted DHCP packet to the device thereby crashing the jdhcpd DHCP service. This is typically configured for Broadband Subscriber Sessions. Continued receipt and processing of this crafted packet will create a sustained Denial of Service (DoS) condition. This issue affects Juniper Networks Junos OS: 19.4 versions prior to 19.4R3-S1; 20.1 versions prior to 20.1R2-S1, 20.1R3; 20.2 versions prior to 20.2R3; 20.3 versions prior to 20.3R2. This issue does not affect Junos OS Evolved."
        }
      ],
      "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-20",
              "description": "CWE-20 Improper Input Validation",
              "lang": "en",
              "type": "CWE"
            }
          ]
        },
        {
          "descriptions": [
            {
              "description": "Denial of Service (DoS)",
              "lang": "en",
              "type": "text"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2021-04-22T19:37:24",
        "orgId": "8cbe9d5a-a066-4c94-8978-4b15efeae968",
        "shortName": "juniper"
      },
      "references": [
        {
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://kb.juniper.net/JSA11158"
        },
        {
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://www.juniper.net/documentation/us/en/software/junos/subscriber-mgmt-sessions/topics/ref/statement/active-leasequery-edit-forwarding-options.html"
        }
      ],
      "solutions": [
        {
          "lang": "en",
          "value": "The following software releases have been updated to resolve this specific issue: \nJunos OS: 19.4R3-S1, 20.1R2-S1, 20.1R3, 20.2R3, 20.3R2, 20.4R1, and all subsequent releases."
        }
      ],
      "source": {
        "advisory": "JSA11158",
        "defect": [
          "1534814"
        ],
        "discovery": "USER"
      },
      "title": "Junos OS: Receipt of a crafted DHCP packet will cause the jdhcpd DHCP service to core.",
      "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-2021-0267",
          "STATE": "PUBLIC",
          "TITLE": "Junos OS: Receipt of a crafted DHCP packet will cause the jdhcpd DHCP service to core."
        },
        "affects": {
          "vendor": {
            "vendor_data": [
              {
                "product": {
                  "product_data": [
                    {
                      "product_name": "Junos OS",
                      "version": {
                        "version_data": [
                          {
                            "version_affected": "\u003c",
                            "version_name": "19.4",
                            "version_value": "19.4R3-S1"
                          },
                          {
                            "version_affected": "\u003c",
                            "version_name": "20.1",
                            "version_value": "20.1R2-S1, 20.1R3"
                          },
                          {
                            "version_affected": "\u003c",
                            "version_name": "20.2",
                            "version_value": "20.2R3"
                          },
                          {
                            "version_affected": "\u003c",
                            "version_name": "20.3",
                            "version_value": "20.3R2"
                          }
                        ]
                      }
                    }
                  ]
                },
                "vendor_name": "Juniper Networks"
              }
            ]
          }
        },
        "configuration": [
          {
            "lang": "en",
            "value": "This issue requires active-lease query with none or greater optional settings to be configured in one or more hierarchy locations.\n\n  active-leasequery {\n    idle-timeout \"seconds\"; (optional)\n    peer-address \"address\"; (optional)\n    timeout \"seconds\"; (optional)\n    topology-discover; (optional)\n  }\n\nwith\n\n  [forwarding-options dhcp-relay],\n  [forwarding-options dhcp-relay dhcpv6],\n  [logical-systems logical-system-name ...],\n  [logical-systems logical-system-name routing-instances routing-instance-name ...],\n  [routing-instances routing-instance-name ...]"
          }
        ],
        "data_format": "MITRE",
        "data_type": "CVE",
        "data_version": "4.0",
        "description": {
          "description_data": [
            {
              "lang": "eng",
              "value": "An Improper Input Validation vulnerability in the active-lease query portion in JDHCPD\u0027s DHCP Relay Agent of Juniper Networks Junos OS allows an attacker to cause a Denial of Service (DoS) by sending a crafted DHCP packet to the device thereby crashing the jdhcpd DHCP service. This is typically configured for Broadband Subscriber Sessions. Continued receipt and processing of this crafted packet will create a sustained Denial of Service (DoS) condition. This issue affects Juniper Networks Junos OS: 19.4 versions prior to 19.4R3-S1; 20.1 versions prior to 20.1R2-S1, 20.1R3; 20.2 versions prior to 20.2R3; 20.3 versions prior to 20.3R2. This issue does not affect Junos OS Evolved."
            }
          ]
        },
        "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-20 Improper Input Validation"
                }
              ]
            },
            {
              "description": [
                {
                  "lang": "eng",
                  "value": "Denial of Service (DoS)"
                }
              ]
            }
          ]
        },
        "references": {
          "reference_data": [
            {
              "name": "https://kb.juniper.net/JSA11158",
              "refsource": "MISC",
              "url": "https://kb.juniper.net/JSA11158"
            },
            {
              "name": "https://www.juniper.net/documentation/us/en/software/junos/subscriber-mgmt-sessions/topics/ref/statement/active-leasequery-edit-forwarding-options.html",
              "refsource": "MISC",
              "url": "https://www.juniper.net/documentation/us/en/software/junos/subscriber-mgmt-sessions/topics/ref/statement/active-leasequery-edit-forwarding-options.html"
            }
          ]
        },
        "solution": [
          {
            "lang": "en",
            "value": "The following software releases have been updated to resolve this specific issue: \nJunos OS: 19.4R3-S1, 20.1R2-S1, 20.1R3, 20.2R3, 20.3R2, 20.4R1, and all subsequent releases."
          }
        ],
        "source": {
          "advisory": "JSA11158",
          "defect": [
            "1534814"
          ],
          "discovery": "USER"
        },
        "work_around": [
          {
            "lang": "en",
            "value": "There are no viable workarounds for this issue."
          }
        ]
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "8cbe9d5a-a066-4c94-8978-4b15efeae968",
    "assignerShortName": "juniper",
    "cveId": "CVE-2021-0267",
    "datePublished": "2021-04-22T19:37:24.295896Z",
    "dateReserved": "2020-10-27T00:00:00",
    "dateUpdated": "2024-09-17T03:54:44.443Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.1",
  "vulnerability-lookup:meta": {
    "fkie_nvd": {
      "configurations": "[{\"nodes\": [{\"operator\": \"OR\", \"negate\": false, \"cpeMatch\": [{\"vulnerable\": true, \"criteria\": \"cpe:2.3:o:juniper:junos:19.4:r1:*:*:*:*:*:*\", \"matchCriteriaId\": \"DC743EE4-8833-452A-94DB-655BF139F883\"}, {\"vulnerable\": true, \"criteria\": \"cpe:2.3:o:juniper:junos:19.4:r1-s1:*:*:*:*:*:*\", \"matchCriteriaId\": \"FE96A8EA-FFE3-4D8F-9266-21899149D634\"}, {\"vulnerable\": true, \"criteria\": \"cpe:2.3:o:juniper:junos:19.4:r1-s2:*:*:*:*:*:*\", \"matchCriteriaId\": \"C12A75C6-2D00-4202-B861-00FF71585FA0\"}, {\"vulnerable\": true, \"criteria\": \"cpe:2.3:o:juniper:junos:19.4:r2:*:*:*:*:*:*\", \"matchCriteriaId\": \"4DCFA774-96EF-4018-82CF-95C807025C24\"}, {\"vulnerable\": true, \"criteria\": \"cpe:2.3:o:juniper:junos:19.4:r2-s1:*:*:*:*:*:*\", \"matchCriteriaId\": \"76022948-4B07-43CB-824C-44E1AB3537CB\"}, {\"vulnerable\": true, \"criteria\": \"cpe:2.3:o:juniper:junos:19.4:r2-s2:*:*:*:*:*:*\", \"matchCriteriaId\": \"25446F60-5CB9-4923-BCE8-609AE3CFDFBC\"}, {\"vulnerable\": true, \"criteria\": \"cpe:2.3:o:juniper:junos:19.4:r3:*:*:*:*:*:*\", \"matchCriteriaId\": \"758275F3-9457-45A2-8F57-65DCD659FC1B\"}, {\"vulnerable\": true, \"criteria\": \"cpe:2.3:o:juniper:junos:20.1:r1:*:*:*:*:*:*\", \"matchCriteriaId\": \"8328FDE6-9707-4142-B905-3B07C0E28E35\"}, {\"vulnerable\": true, \"criteria\": \"cpe:2.3:o:juniper:junos:20.1:r1-s1:*:*:*:*:*:*\", \"matchCriteriaId\": \"41CD982F-E6F2-4951-9F96-A76C142DF08E\"}, {\"vulnerable\": true, \"criteria\": \"cpe:2.3:o:juniper:junos:20.1:r1-s2:*:*:*:*:*:*\", \"matchCriteriaId\": \"19FDC05F-5582-4F7E-B628-E58A3C0E7F2F\"}, {\"vulnerable\": true, \"criteria\": \"cpe:2.3:o:juniper:junos:20.1:r1-s3:*:*:*:*:*:*\", \"matchCriteriaId\": \"401306D1-E9CE-49C6-8DC9-0E8747B9DC2C\"}, {\"vulnerable\": true, \"criteria\": \"cpe:2.3:o:juniper:junos:20.1:r1-s4:*:*:*:*:*:*\", \"matchCriteriaId\": \"615EAF48-AD53-4CC2-B233-5EA5C0F72CB1\"}, {\"vulnerable\": true, \"criteria\": \"cpe:2.3:o:juniper:junos:20.1:r2:*:*:*:*:*:*\", \"matchCriteriaId\": \"DC8E7547-6649-436D-BC45-184417680C72\"}, {\"vulnerable\": true, \"criteria\": \"cpe:2.3:o:juniper:junos:20.2:r1:*:*:*:*:*:*\", \"matchCriteriaId\": \"CD07B7E2-F5C2-4610-9133-FDA9E66DFF4F\"}, {\"vulnerable\": true, \"criteria\": \"cpe:2.3:o:juniper:junos:20.2:r1-s1:*:*:*:*:*:*\", \"matchCriteriaId\": \"D3C23AEB-34DE-44FB-8D64-E69D6E8B7401\"}, {\"vulnerable\": true, \"criteria\": \"cpe:2.3:o:juniper:junos:20.2:r1-s2:*:*:*:*:*:*\", \"matchCriteriaId\": \"18DB9401-5A51-4BB3-AC2F-58F58F1C788C\"}, {\"vulnerable\": true, \"criteria\": \"cpe:2.3:o:juniper:junos:20.2:r1-s3:*:*:*:*:*:*\", \"matchCriteriaId\": \"06F53DA5-59AE-403C-9B1E-41CE267D8BB1\"}, {\"vulnerable\": true, \"criteria\": \"cpe:2.3:o:juniper:junos:20.2:r2:*:*:*:*:*:*\", \"matchCriteriaId\": \"3332262F-81DA-4D78-99C9-514CADA46611\"}, {\"vulnerable\": true, \"criteria\": \"cpe:2.3:o:juniper:junos:20.2:r2-s1:*:*:*:*:*:*\", \"matchCriteriaId\": \"B46B63A2-1518-4A29-940C-F05624C9658D\"}, {\"vulnerable\": true, \"criteria\": \"cpe:2.3:o:juniper:junos:20.2:r2-s2:*:*:*:*:*:*\", \"matchCriteriaId\": \"8E0D4959-3865-42A7-98CD-1103EBD84528\"}, {\"vulnerable\": true, \"criteria\": \"cpe:2.3:o:juniper:junos:20.2:r2-s3:*:*:*:*:*:*\", \"matchCriteriaId\": \"3A58292B-814C-49E7-8D6D-BE26EFB9ADDF\"}, {\"vulnerable\": true, \"criteria\": \"cpe:2.3:o:juniper:junos:20.3:r1:*:*:*:*:*:*\", \"matchCriteriaId\": \"5C9BC697-C7C9-447D-9EBD-E9711462583E\"}, {\"vulnerable\": true, \"criteria\": \"cpe:2.3:o:juniper:junos:20.3:r1-s1:*:*:*:*:*:*\", \"matchCriteriaId\": \"7B80433B-57B1-49EF-B1A1-83781D6102E3\"}]}]}]",
      "descriptions": "[{\"lang\": \"en\", \"value\": \"An Improper Input Validation vulnerability in the active-lease query portion in JDHCPD\u0027s DHCP Relay Agent of Juniper Networks Junos OS allows an attacker to cause a Denial of Service (DoS) by sending a crafted DHCP packet to the device thereby crashing the jdhcpd DHCP service. This is typically configured for Broadband Subscriber Sessions. Continued receipt and processing of this crafted packet will create a sustained Denial of Service (DoS) condition. This issue affects Juniper Networks Junos OS: 19.4 versions prior to 19.4R3-S1; 20.1 versions prior to 20.1R2-S1, 20.1R3; 20.2 versions prior to 20.2R3; 20.3 versions prior to 20.3R2. This issue does not affect Junos OS Evolved.\"}, {\"lang\": \"es\", \"value\": \"Una vulnerabilidad de Comprobaci\\u00f3n de Entrada Inapropiada en una porci\\u00f3n de consulta active-lease en DHCP Relay Agent de JDHCPD de Juniper Networks Junos OS, permite a un atacante causar una Denegaci\\u00f3n de Servicio (DoS) mediante el env\\u00edo de un paquete DHCP dise\\u00f1ado hacia el dispositivo, lo que bloquea el servicio DHCP jdhcpd.\u0026#xa0;Por lo general, se configura para Broadband Subscriber Sessions.\u0026#xa0;La recepci\\u00f3n y el procesamiento continuo de este paquete dise\\u00f1ado crear\\u00e1 una condici\\u00f3n sostenida de Denegaci\\u00f3n de Servicio (DoS).\u0026#xa0;Este problema afecta a Juniper Networks Junos OS: versiones 19.4 anteriores a 19.4R3-S1;\u0026#xa0;versiones 20.1 anteriores a 20.1R2-S1, 20.1R3;\u0026#xa0;20.2 versiones anteriores a 20.2R3;\u0026#xa0;20.3 versiones anteriores a 20.3R2.\u0026#xa0;Este problema no afecta a Junos OS Evolved\"}]",
      "id": "CVE-2021-0267",
      "lastModified": "2024-11-21T05:42:21.583",
      "metrics": "{\"cvssMetricV31\": [{\"source\": \"sirt@juniper.net\", \"type\": \"Secondary\", \"cvssData\": {\"version\": \"3.1\", \"vectorString\": \"CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H\", \"baseScore\": 7.4, \"baseSeverity\": \"HIGH\", \"attackVector\": \"ADJACENT_NETWORK\", \"attackComplexity\": \"LOW\", \"privilegesRequired\": \"NONE\", \"userInteraction\": \"NONE\", \"scope\": \"CHANGED\", \"confidentialityImpact\": \"NONE\", \"integrityImpact\": \"NONE\", \"availabilityImpact\": \"HIGH\"}, \"exploitabilityScore\": 2.8, \"impactScore\": 4.0}, {\"source\": \"nvd@nist.gov\", \"type\": \"Primary\", \"cvssData\": {\"version\": \"3.1\", \"vectorString\": \"CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H\", \"baseScore\": 6.5, \"baseSeverity\": \"MEDIUM\", \"attackVector\": \"ADJACENT_NETWORK\", \"attackComplexity\": \"LOW\", \"privilegesRequired\": \"NONE\", \"userInteraction\": \"NONE\", \"scope\": \"UNCHANGED\", \"confidentialityImpact\": \"NONE\", \"integrityImpact\": \"NONE\", \"availabilityImpact\": \"HIGH\"}, \"exploitabilityScore\": 2.8, \"impactScore\": 3.6}], \"cvssMetricV2\": [{\"source\": \"nvd@nist.gov\", \"type\": \"Primary\", \"cvssData\": {\"version\": \"2.0\", \"vectorString\": \"AV:A/AC:L/Au:N/C:N/I:N/A:P\", \"baseScore\": 3.3, \"accessVector\": \"ADJACENT_NETWORK\", \"accessComplexity\": \"LOW\", \"authentication\": \"NONE\", \"confidentialityImpact\": \"NONE\", \"integrityImpact\": \"NONE\", \"availabilityImpact\": \"PARTIAL\"}, \"baseSeverity\": \"LOW\", \"exploitabilityScore\": 6.5, \"impactScore\": 2.9, \"acInsufInfo\": false, \"obtainAllPrivilege\": false, \"obtainUserPrivilege\": false, \"obtainOtherPrivilege\": false, \"userInteractionRequired\": false}]}",
      "published": "2021-04-22T20:15:09.910",
      "references": "[{\"url\": \"https://kb.juniper.net/JSA11158\", \"source\": \"sirt@juniper.net\", \"tags\": [\"Vendor Advisory\"]}, {\"url\": \"https://www.juniper.net/documentation/us/en/software/junos/subscriber-mgmt-sessions/topics/ref/statement/active-leasequery-edit-forwarding-options.html\", \"source\": \"sirt@juniper.net\", \"tags\": [\"Vendor Advisory\"]}, {\"url\": \"https://kb.juniper.net/JSA11158\", \"source\": \"af854a3a-2127-422b-91ae-364da2661108\", \"tags\": [\"Vendor Advisory\"]}, {\"url\": \"https://www.juniper.net/documentation/us/en/software/junos/subscriber-mgmt-sessions/topics/ref/statement/active-leasequery-edit-forwarding-options.html\", \"source\": \"af854a3a-2127-422b-91ae-364da2661108\", \"tags\": [\"Vendor Advisory\"]}]",
      "sourceIdentifier": "sirt@juniper.net",
      "vulnStatus": "Modified",
      "weaknesses": "[{\"source\": \"sirt@juniper.net\", \"type\": \"Secondary\", \"description\": [{\"lang\": \"en\", \"value\": \"CWE-20\"}]}, {\"source\": \"nvd@nist.gov\", \"type\": \"Primary\", \"description\": [{\"lang\": \"en\", \"value\": \"CWE-20\"}]}]"
    },
    "nvd": "{\"cve\":{\"id\":\"CVE-2021-0267\",\"sourceIdentifier\":\"sirt@juniper.net\",\"published\":\"2021-04-22T20:15:09.910\",\"lastModified\":\"2024-11-21T05:42:21.583\",\"vulnStatus\":\"Modified\",\"cveTags\":[],\"descriptions\":[{\"lang\":\"en\",\"value\":\"An Improper Input Validation vulnerability in the active-lease query portion in JDHCPD\u0027s DHCP Relay Agent of Juniper Networks Junos OS allows an attacker to cause a Denial of Service (DoS) by sending a crafted DHCP packet to the device thereby crashing the jdhcpd DHCP service. This is typically configured for Broadband Subscriber Sessions. Continued receipt and processing of this crafted packet will create a sustained Denial of Service (DoS) condition. This issue affects Juniper Networks Junos OS: 19.4 versions prior to 19.4R3-S1; 20.1 versions prior to 20.1R2-S1, 20.1R3; 20.2 versions prior to 20.2R3; 20.3 versions prior to 20.3R2. This issue does not affect Junos OS Evolved.\"},{\"lang\":\"es\",\"value\":\"Una vulnerabilidad de Comprobaci\u00f3n de Entrada Inapropiada en una porci\u00f3n de consulta active-lease en DHCP Relay Agent de JDHCPD de Juniper Networks Junos OS, permite a un atacante causar una Denegaci\u00f3n de Servicio (DoS) mediante el env\u00edo de un paquete DHCP dise\u00f1ado hacia el dispositivo, lo que bloquea el servicio DHCP jdhcpd.\u0026#xa0;Por lo general, se configura para Broadband Subscriber Sessions.\u0026#xa0;La recepci\u00f3n y el procesamiento continuo de este paquete dise\u00f1ado crear\u00e1 una condici\u00f3n sostenida de Denegaci\u00f3n de Servicio (DoS).\u0026#xa0;Este problema afecta a Juniper Networks Junos OS: versiones 19.4 anteriores a 19.4R3-S1;\u0026#xa0;versiones 20.1 anteriores a 20.1R2-S1, 20.1R3;\u0026#xa0;20.2 versiones anteriores a 20.2R3;\u0026#xa0;20.3 versiones anteriores a 20.3R2.\u0026#xa0;Este problema no afecta a Junos OS Evolved\"}],\"metrics\":{\"cvssMetricV31\":[{\"source\":\"sirt@juniper.net\",\"type\":\"Secondary\",\"cvssData\":{\"version\":\"3.1\",\"vectorString\":\"CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H\",\"baseScore\":7.4,\"baseSeverity\":\"HIGH\",\"attackVector\":\"ADJACENT_NETWORK\",\"attackComplexity\":\"LOW\",\"privilegesRequired\":\"NONE\",\"userInteraction\":\"NONE\",\"scope\":\"CHANGED\",\"confidentialityImpact\":\"NONE\",\"integrityImpact\":\"NONE\",\"availabilityImpact\":\"HIGH\"},\"exploitabilityScore\":2.8,\"impactScore\":4.0},{\"source\":\"nvd@nist.gov\",\"type\":\"Primary\",\"cvssData\":{\"version\":\"3.1\",\"vectorString\":\"CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H\",\"baseScore\":6.5,\"baseSeverity\":\"MEDIUM\",\"attackVector\":\"ADJACENT_NETWORK\",\"attackComplexity\":\"LOW\",\"privilegesRequired\":\"NONE\",\"userInteraction\":\"NONE\",\"scope\":\"UNCHANGED\",\"confidentialityImpact\":\"NONE\",\"integrityImpact\":\"NONE\",\"availabilityImpact\":\"HIGH\"},\"exploitabilityScore\":2.8,\"impactScore\":3.6}],\"cvssMetricV2\":[{\"source\":\"nvd@nist.gov\",\"type\":\"Primary\",\"cvssData\":{\"version\":\"2.0\",\"vectorString\":\"AV:A/AC:L/Au:N/C:N/I:N/A:P\",\"baseScore\":3.3,\"accessVector\":\"ADJACENT_NETWORK\",\"accessComplexity\":\"LOW\",\"authentication\":\"NONE\",\"confidentialityImpact\":\"NONE\",\"integrityImpact\":\"NONE\",\"availabilityImpact\":\"PARTIAL\"},\"baseSeverity\":\"LOW\",\"exploitabilityScore\":6.5,\"impactScore\":2.9,\"acInsufInfo\":false,\"obtainAllPrivilege\":false,\"obtainUserPrivilege\":false,\"obtainOtherPrivilege\":false,\"userInteractionRequired\":false}]},\"weaknesses\":[{\"source\":\"sirt@juniper.net\",\"type\":\"Secondary\",\"description\":[{\"lang\":\"en\",\"value\":\"CWE-20\"}]},{\"source\":\"nvd@nist.gov\",\"type\":\"Primary\",\"description\":[{\"lang\":\"en\",\"value\":\"CWE-20\"}]}],\"configurations\":[{\"nodes\":[{\"operator\":\"OR\",\"negate\":false,\"cpeMatch\":[{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:juniper:junos:19.4:r1:*:*:*:*:*:*\",\"matchCriteriaId\":\"DC743EE4-8833-452A-94DB-655BF139F883\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:juniper:junos:19.4:r1-s1:*:*:*:*:*:*\",\"matchCriteriaId\":\"FE96A8EA-FFE3-4D8F-9266-21899149D634\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:juniper:junos:19.4:r1-s2:*:*:*:*:*:*\",\"matchCriteriaId\":\"C12A75C6-2D00-4202-B861-00FF71585FA0\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:juniper:junos:19.4:r2:*:*:*:*:*:*\",\"matchCriteriaId\":\"4DCFA774-96EF-4018-82CF-95C807025C24\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:juniper:junos:19.4:r2-s1:*:*:*:*:*:*\",\"matchCriteriaId\":\"76022948-4B07-43CB-824C-44E1AB3537CB\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:juniper:junos:19.4:r2-s2:*:*:*:*:*:*\",\"matchCriteriaId\":\"25446F60-5CB9-4923-BCE8-609AE3CFDFBC\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:juniper:junos:19.4:r3:*:*:*:*:*:*\",\"matchCriteriaId\":\"758275F3-9457-45A2-8F57-65DCD659FC1B\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:juniper:junos:20.1:r1:*:*:*:*:*:*\",\"matchCriteriaId\":\"8328FDE6-9707-4142-B905-3B07C0E28E35\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:juniper:junos:20.1:r1-s1:*:*:*:*:*:*\",\"matchCriteriaId\":\"41CD982F-E6F2-4951-9F96-A76C142DF08E\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:juniper:junos:20.1:r1-s2:*:*:*:*:*:*\",\"matchCriteriaId\":\"19FDC05F-5582-4F7E-B628-E58A3C0E7F2F\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:juniper:junos:20.1:r1-s3:*:*:*:*:*:*\",\"matchCriteriaId\":\"401306D1-E9CE-49C6-8DC9-0E8747B9DC2C\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:juniper:junos:20.1:r1-s4:*:*:*:*:*:*\",\"matchCriteriaId\":\"615EAF48-AD53-4CC2-B233-5EA5C0F72CB1\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:juniper:junos:20.1:r2:*:*:*:*:*:*\",\"matchCriteriaId\":\"DC8E7547-6649-436D-BC45-184417680C72\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:juniper:junos:20.2:r1:*:*:*:*:*:*\",\"matchCriteriaId\":\"CD07B7E2-F5C2-4610-9133-FDA9E66DFF4F\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:juniper:junos:20.2:r1-s1:*:*:*:*:*:*\",\"matchCriteriaId\":\"D3C23AEB-34DE-44FB-8D64-E69D6E8B7401\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:juniper:junos:20.2:r1-s2:*:*:*:*:*:*\",\"matchCriteriaId\":\"18DB9401-5A51-4BB3-AC2F-58F58F1C788C\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:juniper:junos:20.2:r1-s3:*:*:*:*:*:*\",\"matchCriteriaId\":\"06F53DA5-59AE-403C-9B1E-41CE267D8BB1\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:juniper:junos:20.2:r2:*:*:*:*:*:*\",\"matchCriteriaId\":\"3332262F-81DA-4D78-99C9-514CADA46611\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:juniper:junos:20.2:r2-s1:*:*:*:*:*:*\",\"matchCriteriaId\":\"B46B63A2-1518-4A29-940C-F05624C9658D\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:juniper:junos:20.2:r2-s2:*:*:*:*:*:*\",\"matchCriteriaId\":\"8E0D4959-3865-42A7-98CD-1103EBD84528\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:juniper:junos:20.2:r2-s3:*:*:*:*:*:*\",\"matchCriteriaId\":\"3A58292B-814C-49E7-8D6D-BE26EFB9ADDF\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:juniper:junos:20.3:r1:*:*:*:*:*:*\",\"matchCriteriaId\":\"5C9BC697-C7C9-447D-9EBD-E9711462583E\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:juniper:junos:20.3:r1-s1:*:*:*:*:*:*\",\"matchCriteriaId\":\"7B80433B-57B1-49EF-B1A1-83781D6102E3\"}]}]}],\"references\":[{\"url\":\"https://kb.juniper.net/JSA11158\",\"source\":\"sirt@juniper.net\",\"tags\":[\"Vendor Advisory\"]},{\"url\":\"https://www.juniper.net/documentation/us/en/software/junos/subscriber-mgmt-sessions/topics/ref/statement/active-leasequery-edit-forwarding-options.html\",\"source\":\"sirt@juniper.net\",\"tags\":[\"Vendor Advisory\"]},{\"url\":\"https://kb.juniper.net/JSA11158\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\",\"tags\":[\"Vendor Advisory\"]},{\"url\":\"https://www.juniper.net/documentation/us/en/software/junos/subscriber-mgmt-sessions/topics/ref/statement/active-leasequery-edit-forwarding-options.html\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\",\"tags\":[\"Vendor Advisory\"]}]}}"
  }
}


Log in or create an account to share your comment.




Tags
Taxonomy of the tags.




Sightings

Author Source Type Date

Nomenclature

  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
  • Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
  • Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
  • Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
  • Not confirmed: The user expressed doubt about the validity of the vulnerability.
  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.



Detection rules are retrieved from Rulezet.