gsd-2023-4481
Vulnerability from gsd
Modified
2023-12-13 01:20
Details
An Improper Input Validation vulnerability in the Routing Protocol Daemon (rpd) of Juniper Networks Junos OS and Junos OS Evolved allows an unauthenticated, network-based attacker to cause a Denial of Service (DoS). When certain specific crafted BGP UPDATE messages are received over an established BGP session, one BGP session may be torn down with an UPDATE message error, or the issue may propagate beyond the local system which will remain non-impacted, but may affect one or more remote systems. This issue is exploitable remotely as the crafted UPDATE message can propagate through unaffected systems and intermediate BGP speakers. Continuous receipt of the crafted BGP UPDATE messages will create a sustained Denial of Service (DoS) condition for impacted devices. This issue affects eBGP and iBGP, in both IPv4 and IPv6 implementations. This issue requires a remote attacker to have at least one established BGP session.
Aliases
Aliases
CVE-2023-4481


To clipboard 

{
  "GSD": {
    "alias": "CVE-2023-4481",
    "id": "GSD-2023-4481"
  },
  "gsd": {
    "metadata": {
      "exploitCode": "unknown",
      "remediation": "unknown",
      "reportConfidence": "confirmed",
      "type": "vulnerability"
    },
    "osvSchema": {
      "aliases": [
        "CVE-2023-4481"
      ],
      "details": "An Improper Input Validation vulnerability in the Routing Protocol Daemon (rpd) of Juniper Networks Junos OS and Junos OS Evolved allows an unauthenticated, network-based attacker to cause a Denial of Service (DoS).\n\nWhen certain specific crafted BGP UPDATE messages are received over an established BGP session, one BGP session may be torn down with an UPDATE message error, or the issue may propagate beyond the local system which will remain non-impacted, but may affect one or more remote systems. This issue is exploitable remotely as the crafted UPDATE message can propagate through unaffected systems and intermediate BGP speakers.\nContinuous receipt of the crafted BGP UPDATE messages will create a sustained Denial of Service (DoS) condition for impacted devices.\n\nThis issue affects eBGP and iBGP, in both IPv4 and IPv6 implementations.  This issue requires a remote attacker to have at least one established BGP session.\n",
      "id": "GSD-2023-4481",
      "modified": "2023-12-13T01:20:26.820452Z",
      "schema_version": "1.4.0"
    }
  },
  "namespaces": {
    "cve.org": {
      "CVE_data_meta": {
        "ASSIGNER": "sirt@juniper.net",
        "ID": "CVE-2023-4481",
        "STATE": "PUBLIC"
      },
      "affects": {
        "vendor": {
          "vendor_data": [
            {
              "product": {
                "product_data": [
                  {
                    "product_name": "Junos OS",
                    "version": {
                      "version_data": [
                        {
                          "version_value": "not down converted",
                          "x_cve_json_5_version_data": {
                            "defaultStatus": "affected",
                            "versions": [
                              {
                                "lessThan": "23.4R1",
                                "status": "affected",
                                "version": "0",
                                "versionType": "semver"
                              }
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                          }
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                      ]
                    }
                  },
                  {
                    "product_name": "Junos OS Evolved",
                    "version": {
                      "version_data": [
                        {
                          "version_value": "not down converted",
                          "x_cve_json_5_version_data": {
                            "defaultStatus": "affected",
                            "versions": [
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                                "status": "affected",
                                "version": "0",
                                "versionType": "semver"
                              }
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                          }
                        }
                      ]
                    }
                  }
                ]
              },
              "vendor_name": "Juniper Networks, Inc."
            }
          ]
        }
      },
      "configuration": [
        {
          "lang": "en",
          "supportingMedia": [
            {
              "base64": false,
              "type": "text/html",
              "value": "The following minimal configuration is required:\u003cbr\u003e\u003cbr\u003e\u0026nbsp; [protocols bgp]"
            }
          ],
          "value": "The following minimal configuration is required:\n\n\u00a0 [protocols bgp]"
        }
      ],
      "credits": [
        {
          "lang": "en",
          "value": "Ben Cartwright-Cox / bgp.tools"
        }
      ],
      "data_format": "MITRE",
      "data_type": "CVE",
      "data_version": "4.0",
      "description": {
        "description_data": [
          {
            "lang": "eng",
            "value": "An Improper Input Validation vulnerability in the Routing Protocol Daemon (rpd) of Juniper Networks Junos OS and Junos OS Evolved allows an unauthenticated, network-based attacker to cause a Denial of Service (DoS).\n\nWhen certain specific crafted BGP UPDATE messages are received over an established BGP session, one BGP session may be torn down with an UPDATE message error, or the issue may propagate beyond the local system which will remain non-impacted, but may affect one or more remote systems. This issue is exploitable remotely as the crafted UPDATE message can propagate through unaffected systems and intermediate BGP speakers.\nContinuous receipt of the crafted BGP UPDATE messages will create a sustained Denial of Service (DoS) condition for impacted devices.\n\nThis issue affects eBGP and iBGP, in both IPv4 and IPv6 implementations.  This issue requires a remote attacker to have at least one established BGP session.\n"
          }
        ]
      },
      "exploit": [
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          "lang": "en",
          "supportingMedia": [
            {
              "base64": false,
              "type": "text/html",
              "value": "\u003cspan style=\"background-color: rgb(255, 255, 255);\"\u003eJuniper SIRT is not aware of any malicious exploitation of this vulnerability.\u003c/span\u003e\u003cbr\u003e"
            }
          ],
          "value": "Juniper SIRT is not aware of any malicious exploitation of this vulnerability.\n"
        }
      ],
      "generator": {
        "engine": "Vulnogram 0.1.0-dev"
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      "impact": {
        "cvss": [
          {
            "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"
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                "cweId": "CWE-20",
                "lang": "eng",
                "value": "CWE-20 Improper Input Validation"
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          {
            "description": [
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                "lang": "eng",
                "value": "Denial of Service"
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            "name": "https://kb.juniper.net/JSA72510",
            "refsource": "MISC",
            "url": "https://kb.juniper.net/JSA72510"
          },
          {
            "name": "https://www.rfc-editor.org/rfc/rfc7606",
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            "url": "https://www.rfc-editor.org/rfc/rfc7606"
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          {
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            "url": "https://www.rfc-editor.org/rfc/rfc4271"
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            "url": "https://www.juniper.net/documentation/us/en/software/junos/bgp/topics/topic-map/bgp-error-messages.html"
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        ]
      },
      "solution": [
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          "supportingMedia": [
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              "value": "\u003cp\u003eThe following software releases have been updated to resolve this specific issue:\u003c/p\u003e\u003cp\u003eJunos OS: 23.4R1*, and all subsequent releases.\u003c/p\u003e\u003cp\u003eJunos OS Evolved: 23.4R1-EVO*, and all subsequent releases.\u003cbr\u003e\u003cbr\u003e*Pending Publication \u2013 Please note: Additional releases before 23.4R1 for Junos OS and 23.4R1-EVO for Junos OS Evolved are being worked on at this time. Please monitor PRSearch ongoing, and subscribe to this advisory, to see  additional resolved in releases as they become available or as this advisory is updated.\u003cbr\u003e\u003cbr\u003eIt is important that customers implement the workaround in addition to taking any updated software as these crafted UPDATE messages may be propagated to other devices even if non-impacted locally, thereby protecting the network by stopping the propagation of these crafted UPDATE messages.\u003cbr\u003eThe workaround is to configure BGP error tolerance by way of:\u003cbr\u003e\u003cbr\u003e\u0026nbsp; [ protocols bgp bgp-error-tolerance ... ]\u003cbr\u003e\u003cbr\u003eAdditional details can be found at \u003ca target=\"_blank\" rel=\"nofollow\" href=\"https://www.juniper.net/documentation/us/en/software/junos/bgp/topics/topic-map/bgp-error-messages.html\"\u003ehttps://www.juniper.net/documentation/us/en/software/junos/bgp/topics/topic-map/bgp-error-messages.h...\u003c/a\u003e\u003cbr\u003e\u003cbr\u003eJuniper considers configuring this option to be a Best Common Practice (BCP) as it not only prevents this issue from happening, but protects against similar issues as well.\u003c/p\u003e\u003cp\u003eThis issue is being tracked as PR \u003ca target=\"_blank\" rel=\"nofollow\" href=\"https://prsearch.juniper.net/problemreport/PR1709837\"\u003e1709837\u003c/a\u003e\u0026nbsp;which is visible on the Customer Support website.\u003c/p\u003e\u003cp\u003eNote: Juniper SIRT\u0027s \u003ca target=\"_blank\" rel=\"nofollow\" href=\"https://kb.juniper.net/KB16765\"\u003epolicy\u003c/a\u003e\u0026nbsp;is not to evaluate releases which are beyond End of Engineering (EOE) or End of Life (EOL).\u003c/p\u003e\u003cbr\u003e"
            }
          ],
          "value": "The following software releases have been updated to resolve this specific issue:\n\nJunos OS: 23.4R1*, and all subsequent releases.\n\nJunos OS Evolved: 23.4R1-EVO*, and all subsequent releases.\n\n*Pending Publication \u2013 Please note: Additional releases before 23.4R1 for Junos OS and 23.4R1-EVO for Junos OS Evolved are being worked on at this time. Please monitor PRSearch ongoing, and subscribe to this advisory, to see  additional resolved in releases as they become available or as this advisory is updated.\n\nIt is important that customers implement the workaround in addition to taking any updated software as these crafted UPDATE messages may be propagated to other devices even if non-impacted locally, thereby protecting the network by stopping the propagation of these crafted UPDATE messages.\nThe workaround is to configure BGP error tolerance by way of:\n\n\u00a0 [ protocols bgp bgp-error-tolerance ... ]\n\nAdditional details can be found at  https://www.juniper.net/documentation/us/en/software/junos/bgp/topics/topic-map/bgp-error-messages.h... https://www.juniper.net/documentation/us/en/software/junos/bgp/topics/topic-map/bgp-error-messages.html \n\nJuniper considers configuring this option to be a Best Common Practice (BCP) as it not only prevents this issue from happening, but protects against similar issues as well.\n\nThis issue is being tracked as PR  1709837 https://prsearch.juniper.net/problemreport/PR1709837 \u00a0which is visible on the Customer Support website.\n\nNote: Juniper SIRT\u0027s  policy https://kb.juniper.net/KB16765 \u00a0is not to evaluate releases which are beyond End of Engineering (EOE) or End of Life (EOL).\n\n\n"
        }
      ],
      "source": {
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        "defect": [
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        ],
        "discovery": "EXTERNAL"
      },
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              "value": "\u003cspan style=\"background-color: rgb(255, 255, 255);\"\u003eThe workaround is to configure BGP error tolerance by way of:\u003c/span\u003e\u003cbr\u003e\u003cbr\u003e\u003cspan style=\"background-color: rgb(255, 255, 255);\"\u003e\u0026nbsp; [ protocols bgp bgp-error-tolerance ... ]\u003c/span\u003e\u003cbr\u003e\u003cbr\u003e\u003cspan style=\"background-color: rgb(255, 255, 255);\"\u003eAdditional details can be found at \u003c/span\u003e\u003ca target=\"_blank\" rel=\"nofollow\" href=\"https://www.juniper.net/documentation/us/en/software/junos/bgp/topics/topic-map/bgp-error-messages.html\"\u003ehttps://www.juniper.net/documentation/us/en/software/junos/bgp/topics/topic-map/bgp-error-messages.h...\u003c/a\u003e\u003cbr\u003e\u003cbr\u003e\u003cspan style=\"background-color: rgb(255, 255, 255);\"\u003eJuniper considers configuring this option to be a Best Common Practice (BCP) as it not only prevents this issue from happening, but protects against similar issues as well.\u003c/span\u003e\u003cbr\u003e"
            }
          ],
          "value": "The workaround is to configure BGP error tolerance by way of:\n\n\u00a0 [ protocols bgp bgp-error-tolerance ... ]\n\nAdditional details can be found at  https://www.juniper.net/documentation/us/en/software/junos/bgp/topics/topic-map/bgp-error-messages.h... https://www.juniper.net/documentation/us/en/software/junos/bgp/topics/topic-map/bgp-error-messages.html \n\nJuniper considers configuring this option to be a Best Common Practice (BCP) as it not only prevents this issue from happening, but protects against similar issues as well.\n"
        }
      ]
    },
    "nvd.nist.gov": {
      "configurations": {
        "CVE_data_version": "4.0",
        "nodes": [
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            "children": [],
            "cpe_match": [
              {
                "cpe23Uri": "cpe:2.3:o:juniper:junos:*:*:*:*:*:*:*:*",
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            "operator": "OR"
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          "ID": "CVE-2023-4481"
        },
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        "data_type": "CVE",
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        "description": {
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              "lang": "en",
              "value": "An Improper Input Validation vulnerability in the Routing Protocol Daemon (rpd) of Juniper Networks Junos OS and Junos OS Evolved allows an unauthenticated, network-based attacker to cause a Denial of Service (DoS).\n\nWhen certain specific crafted BGP UPDATE messages are received over an established BGP session, one BGP session may be torn down with an UPDATE message error, or the issue may propagate beyond the local system which will remain non-impacted, but may affect one or more remote systems. This issue is exploitable remotely as the crafted UPDATE message can propagate through unaffected systems and intermediate BGP speakers.\nContinuous receipt of the crafted BGP UPDATE messages will create a sustained Denial of Service (DoS) condition for impacted devices.\n\nThis issue affects eBGP and iBGP, in both IPv4 and IPv6 implementations.  This issue requires a remote attacker to have at least one established BGP session.\n"
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      "impact": {
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            "attackVector": "NETWORK",
            "availabilityImpact": "HIGH",
            "baseScore": 7.5,
            "baseSeverity": "HIGH",
            "confidentialityImpact": "NONE",
            "integrityImpact": "NONE",
            "privilegesRequired": "NONE",
            "scope": "UNCHANGED",
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            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
            "version": "3.1"
          },
          "exploitabilityScore": 3.9,
          "impactScore": 3.6
        }
      },
      "lastModifiedDate": "2023-09-07T19:11Z",
      "publishedDate": "2023-09-01T00:15Z"
    }
  }
}


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