Vulnerability-Lookup

VAR-202210-1146

Vulnerability from variot - Updated: 2024-08-14 15:06

Due to the Improper Handling of an Unexpected Data Type in the processing of EVPN routes on Juniper Networks Junos OS and Junos OS Evolved, an attacker in direct control of a BGP client connected to a route reflector, or via a machine in the middle (MITM) attack, can send a specific EVPN route contained within a BGP Update, triggering a routing protocol daemon (RPD) crash, leading to a Denial of Service (DoS) condition. Continued receipt and processing of these specific EVPN routes could create a sustained Denial of Service (DoS) condition. This issue only occurs on BGP route reflectors, only within a BGP EVPN multicast environment, and only when one or more BGP clients have 'leave-sync-route-oldstyle' enabled. This issue affects: Juniper Networks Junos OS 21.3 versions prior to 21.3R3-S2; 21.4 versions prior to 21.4R2-S2, 21.4R3; 22.1 versions prior to 22.1R1-S2, 22.1R3; 22.2 versions prior to 22.2R2. Juniper Networks Junos OS Evolved 21.3 version 21.3R1-EVO and later versions prior to 21.4R3-EVO; 22.1 versions prior to 22.1R1-S2-EVO, 22.1R3-EVO; 22.2 versions prior to 22.2R2-EVO. This issue does not affect: Juniper Networks Junos OS versions prior to 21.3R1. Juniper Networks Junos OS Evolved versions prior to 21.3R1-EVO

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CVE-2022-22219 (GCVE-0-2022-22219)

Vulnerability from cvelistv5 – Published: 2022-10-18 02:46 – Updated: 2025-05-12 14:43

Title

Junos OS and Junos OS Evolved: RPD core upon receipt of a specific EVPN route by a BGP route reflector in an EVPN environment

Summary

Severity

5.9 (Medium)


                        
                          CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H

SSVC

Exploitation: none Automatable: no Technical Impact: partial

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2025-05-12 14:43 UTC

CWE

CWE-241 - Improper Handling of Unexpected Data Type
Denial of Service (DoS)

Assigner

juniper CNA under the mitre root

CNA scorecard B 84/100 over 193 records in the last 180 days details

References

2 references

URL	Tags
https://kb.juniper.net/JSA69898
https://www.juniper.net/documentation/us/en/softw…

Impacted products

2 products

Vendor	Product	Version
Juniper Networks	Junos OS	Unaffected: unspecified , ≤ 21.3R1 (custom) Affected: 21.3 , < 21.3R3-S2 (custom) Affected: 21.4 , < 21.4R2-S2, 21.4R3 (custom) Affected: 22.1 , < 22.1R1-S2, 22.1R3 (custom) Affected: 22.2 , < 22.2R2 (custom)
Juniper Networks	Junos OS Evolved	Unaffected: unspecified , < 21.3R1-EVO (custom) Affected: 21.3R1-EVO , < 21.3* (custom) Affected: 21.4 , < 21.4R3-EVO (custom) Affected: 22.1 , < 22.1R1-S2-EVO, 22.1R3-EVO (custom) Affected: 22.2 , < 22.2R2-EVO (custom)

Date Public

2022-10-12 00:00

Show details on NVD website

JSON

To clipboard

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                "timestamp": "2025-05-12T14:43:38.666053Z",
                "version": "2.0.3"
              },
              "type": "ssvc"
            }
          }
        ],
        "providerMetadata": {
          "dateUpdated": "2025-05-12T14:43:47.381Z",
          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
        },
        "title": "CISA ADP Vulnrichment"
      }
    ],
    "cna": {
      "affected": [
        {
          "product": "Junos OS",
          "vendor": "Juniper Networks",
          "versions": [
            {
              "lessThanOrEqual": "21.3R1",
              "status": "unaffected",
              "version": "unspecified",
              "versionType": "custom"
            },
            {
              "lessThan": "21.3R3-S2",
              "status": "affected",
              "version": "21.3",
              "versionType": "custom"
            },
            {
              "lessThan": "21.4R2-S2, 21.4R3",
              "status": "affected",
              "version": "21.4",
              "versionType": "custom"
            },
            {
              "lessThan": "22.1R1-S2, 22.1R3",
              "status": "affected",
              "version": "22.1",
              "versionType": "custom"
            },
            {
              "lessThan": "22.2R2",
              "status": "affected",
              "version": "22.2",
              "versionType": "custom"
            }
          ]
        },
        {
          "product": "Junos OS Evolved",
          "vendor": "Juniper Networks",
          "versions": [
            {
              "lessThan": "21.3R1-EVO",
              "status": "unaffected",
              "version": "unspecified",
              "versionType": "custom"
            },
            {
              "lessThan": "21.3*",
              "status": "affected",
              "version": "21.3R1-EVO",
              "versionType": "custom"
            },
            {
              "lessThan": "21.4R3-EVO",
              "status": "affected",
              "version": "21.4",
              "versionType": "custom"
            },
            {
              "lessThan": "22.1R1-S2-EVO, 22.1R3-EVO",
              "status": "affected",
              "version": "22.1",
              "versionType": "custom"
            },
            {
              "lessThan": "22.2R2-EVO",
              "status": "affected",
              "version": "22.2",
              "versionType": "custom"
            }
          ]
        }
      ],
      "configurations": [
        {
          "lang": "en",
          "value": "This issue can occur when the following configuration is enabled on the route reflector clients:\n\n  [protocols evpn leave-sync-route-oldstyle]\n\nand when EVPN is configured on the route reflector: \n\n  [protocols evpn]"
        }
      ],
      "datePublic": "2022-10-12T00:00:00.000Z",
      "descriptions": [
        {
          "lang": "en",
          "value": "Due to the Improper Handling of an Unexpected Data Type in the processing of EVPN routes on Juniper Networks Junos OS and Junos OS Evolved, an attacker in direct control of a BGP client connected to a route reflector, or via a machine in the middle (MITM) attack, can send a specific EVPN route contained within a BGP Update, triggering a routing protocol daemon (RPD) crash, leading to a Denial of Service (DoS) condition. Continued receipt and processing of these specific EVPN routes could create a sustained Denial of Service (DoS) condition. This issue only occurs on BGP route reflectors, only within a BGP EVPN multicast environment, and only when one or more BGP clients have \u0027leave-sync-route-oldstyle\u0027 enabled. This issue affects: Juniper Networks Junos OS 21.3 versions prior to 21.3R3-S2; 21.4 versions prior to 21.4R2-S2, 21.4R3; 22.1 versions prior to 22.1R1-S2, 22.1R3; 22.2 versions prior to 22.2R2. Juniper Networks Junos OS Evolved 21.3 version 21.3R1-EVO and later versions prior to 21.4R3-EVO; 22.1 versions prior to 22.1R1-S2-EVO, 22.1R3-EVO; 22.2 versions prior to 22.2R2-EVO. This issue does not affect: Juniper Networks Junos OS versions prior to 21.3R1. Juniper Networks Junos OS Evolved versions prior to 21.3R1-EVO."
        }
      ],
      "metrics": [
        {
          "cvssV3_1": {
            "attackComplexity": "HIGH",
            "attackVector": "NETWORK",
            "availabilityImpact": "HIGH",
            "baseScore": 5.9,
            "baseSeverity": "MEDIUM",
            "confidentialityImpact": "NONE",
            "integrityImpact": "NONE",
            "privilegesRequired": "NONE",
            "scope": "UNCHANGED",
            "userInteraction": "NONE",
            "vectorString": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H",
            "version": "3.1"
          }
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "cweId": "CWE-241",
              "description": "CWE-241 Improper Handling of Unexpected Data Type",
              "lang": "en",
              "type": "CWE"
            }
          ]
        },
        {
          "descriptions": [
            {
              "description": "Denial of Service (DoS)",
              "lang": "en",
              "type": "text"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2022-10-18T00:00:00.000Z",
        "orgId": "8cbe9d5a-a066-4c94-8978-4b15efeae968",
        "shortName": "juniper"
      },
      "references": [
        {
          "url": "https://kb.juniper.net/JSA69898"
        },
        {
          "url": "https://www.juniper.net/documentation/us/en/software/junos/evpn-vxlan/topics/ref/statement/evpn-edit-routing-instances-protocols.html"
        }
      ],
      "solutions": [
        {
          "lang": "en",
          "value": "The following software releases have been updated to resolve this specific issue:\nJunos OS 21.3R3-S2, 21.4R2-S2, 21.4R3, 22.1R1-S2, 22.1R3, 22.2R2, 22.3R1, and all subsequent releases.\nJunos OS Evolved 21.4R3-EVO, 22.1R1-S2-EVO, 22.1R3-EVO, 22.2R2-EVO, 22.3R1-EVO, and all subsequent releases."
        }
      ],
      "source": {
        "advisory": "JSA69898",
        "defect": [
          "1675054"
        ],
        "discovery": "USER"
      },
      "title": "Junos OS and Junos OS Evolved: RPD core upon receipt of a specific EVPN route by a BGP route reflector in an EVPN environment",
      "workarounds": [
        {
          "lang": "en",
          "value": "Enabling \u0027leave-sync-route-oldstyle\u0027 on the BGP route reflector will mitigate the RPD crash, but BGP sessions may still be torn down if one or more clients have \u0027leave-sync-route-oldstyle\u0027 enabled."
        }
      ],
      "x_generator": {
        "engine": "Vulnogram 0.0.9"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "8cbe9d5a-a066-4c94-8978-4b15efeae968",
    "assignerShortName": "juniper",
    "cveId": "CVE-2022-22219",
    "datePublished": "2022-10-18T02:46:22.897Z",
    "dateReserved": "2021-12-21T00:00:00.000Z",
    "dateUpdated": "2025-05-12T14:43:47.381Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.1"
}

Sightings

Author	Source	Type	Date	Other

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.

Vulnerability timeline

Sightings and recorded dates, grouped by day · UTC

Order JSON

How durations are calculated

Following the VTEM framework (Black Hat USA 2015), time to patch starts when the vendor or a coordinator was informed, total time to patch at discovery, and disclosure to patch at public disclosure; vendor response time runs from the report to its acknowledgement. Time to exploit and time unpatched start at the earliest discovery or report, falling back to public disclosure. Unpatched time ends at the first recorded patch, or the calculation time when no patch is recorded. Exploitation to patch shows the interval between those two events; a published proof of concept is a public exploit, not exploitation.

Each result shows its source dates. A negative interval means the end event came first; when date-only inputs leave the order open, the result says so. Date-only inputs are approximate. The earliest evidence wins: KEV report dates and sightings are labelled as such. Records describing another vulnerability are listed but never calculated from, and a PoC alone does not establish exploitation. Missing patch evidence does not prove that no patch exists. Filters below change the event list only.

Publication & reservation Sightings KEV catalogs Other timestamps

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The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base model, served locally by ML-Gateway. They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.

Related by attack behaviour

Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.

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