Vulnerability-Lookup

VAR-202301-0904

Vulnerability from variot - Updated: 2023-12-18 13:31

A Use After Free vulnerability in the kernel of Juniper Networks Junos OS Evolved allows an unauthenticated, network-based attacker to cause a Denial of Service (DoS). In a Non Stop Routing (NSR) scenario, an unexpected kernel restart might be observed if "bgp auto-discovery" is enabled and if there is a BGP neighbor flap of auto-discovery sessions for any reason. This is a race condition which is outside of an attackers direct control and it depends on system internal timing whether this issue occurs. This issue affects Juniper Networks Junos OS Evolved: 21.3 versions prior to 21.3R3-EVO; 21.4 versions prior to 21.4R2-EVO; 22.1 versions prior to 22.1R2-EVO; 22.2 versions prior to 22.2R1-S1-EVO, 22.2R2-EVO

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CVE-2023-22402 (GCVE-0-2023-22402)

Vulnerability from cvelistv5 – Published: 2023-01-12 00:00 – Updated: 2025-04-07 20:06

Title

Junos OS Evolved: The kernel might restart in a BGP scenario where "bgp auto-discovery" is enabled and such a neighbor flaps

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 2025-04-07 20:06 UTC

CWE

CWE-416 - Use After Free
Denial of Service (DoS)

Assigner

juniper mitre root Scorecard

References

1 reference

URL	Tags
https://kb.juniper.net/JSA70198

Impacted products

1 product

Vendor	Product	Version
Juniper Networks	Junos OS Evolved	Affected: 21.3 , < 21.3R3-EVO (custom) Affected: 21.4 , < 21.4R2-EVO (custom) Affected: 22.1 , < 22.1R2-EVO (custom) Affected: 22.2 , < 22.2R1-S1-EVO, 22.2R2-EVO (custom)

Date Public

2023-01-11 00:00

Show details on NVD website

JSON

To clipboard

{
  "containers": {
    "adp": [
      {
        "providerMetadata": {
          "dateUpdated": "2024-08-02T10:07:06.572Z",
          "orgId": "af854a3a-2127-422b-91ae-364da2661108",
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        "references": [
          {
            "tags": [
              "x_transferred"
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            "url": "https://kb.juniper.net/JSA70198"
          }
        ],
        "title": "CVE Program Container"
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              "content": {
                "id": "CVE-2023-22402",
                "options": [
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                  },
                  {
                    "Automatable": "no"
                  },
                  {
                    "Technical Impact": "partial"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2025-04-07T20:06:46.953989Z",
                "version": "2.0.3"
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    "cna": {
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          "vendor": "Juniper Networks",
          "versions": [
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              "status": "affected",
              "version": "21.3",
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            },
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              "lessThan": "21.4R2-EVO",
              "status": "affected",
              "version": "21.4",
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            },
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              "lessThan": "22.1R2-EVO",
              "status": "affected",
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              "versionType": "custom"
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              "version": "22.2",
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          ]
        }
      ],
      "configurations": [
        {
          "lang": "en",
          "value": "To be exposed to this is issue non-stop routing (NSR) and BGP auto-discovery need to be configured:\n\n  [routing-options nonstop-routing]\n  [protocols bgp group \u003cname\u003e dynamic-neighbor \u003ctemplate\u003e peer-auto-discovery]"
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      ],
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        }
      ],
      "exploits": [
        {
          "lang": "en",
          "value": "Juniper SIRT is not aware of any malicious exploitation of this vulnerability."
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      "metrics": [
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            "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"
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          "url": "https://kb.juniper.net/JSA70198"
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      "solutions": [
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          "lang": "en",
          "value": "The following software releases have been updated to resolve this specific issue: 21.3R3-EVO, 21.4R2-EVO, 22.1R2-EVO, 22.2R1-S1-EVO, 22.2R2-EVO, 22.3R1-EVO, and all subsequent releases."
        }
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        "advisory": "JSA70198",
        "defect": [
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        "discovery": "USER"
      },
      "title": "Junos OS Evolved: The kernel might restart in a BGP scenario where \"bgp auto-discovery\" is enabled and such a neighbor flaps",
      "workarounds": [
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          "lang": "en",
          "value": "There are no known workarounds for this issue."
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    "dateReserved": "2022-12-27T00:00:00.000Z",
    "dateUpdated": "2025-04-07T20:06:56.856Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.1"
}

Sightings

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Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.

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VAR-202301-0904

CVE-2023-22402 (GCVE-0-2023-22402)

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