FKIE_CVE-2023-44183
Vulnerability from fkie_nvd - Published: 2023-10-13 00:15 - Updated: 2026-06-17 06:27
Severity
6.5 (Medium) - CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
5.3 (Medium) - CVSS:3.1/AV:A/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H
5.3 (Medium) - CVSS:3.1/AV:A/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H
Summary
An Improper Input Validation vulnerability in the VxLAN packet forwarding engine (PFE) of Juniper Networks Junos OS on QFX5000 Series, EX4600 Series devices allows an unauthenticated, adjacent attacker, sending two or more genuine packets in the same VxLAN topology to possibly cause a DMA memory leak to occur under various specific operational conditions. The scenario described here is the worst-case scenario. There are other scenarios that require operator action to occur.
An indicator of compromise may be seen when multiple devices indicate that FPC0 has gone missing when issuing a show chassis fpc command for about 10 to 20 minutes, and a number of interfaces have also gone missing.
Use the following command to determine if FPC0 has gone missing from the device.
show chassis fpc detail
This issue affects:
Juniper Networks Junos OS on QFX5000 Series, EX4600 Series:
* 18.4 version 18.4R2 and later versions prior to 20.4R3-S8;
* 21.1 version 21.1R1 and later versions prior to 21.2R3-S6;
* 21.3 versions prior to 21.3R3-S5;
* 21.4 versions prior to 21.4R3-S4;
* 22.1 versions prior to 22.1R3-S3;
* 22.2 versions prior to 22.2R3-S1;
* 22.3 versions prior to 22.3R2-S2, 22.3R3;
* 22.4 versions prior to 22.4R2.
References
Impacted products
{
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{
"lang": "en",
"value": "\nAn Improper Input Validation vulnerability in the VxLAN packet forwarding engine (PFE) of Juniper Networks Junos OS on QFX5000 Series, EX4600 Series devices allows an unauthenticated, adjacent attacker, sending two or more genuine packets in the same VxLAN topology to possibly cause a DMA memory leak to occur under various specific operational conditions. The scenario described here is the worst-case scenario. There are other scenarios that require operator action to occur.\n\nAn indicator of compromise may be seen when multiple devices indicate that FPC0 has gone missing when issuing a show chassis fpc command for about 10 to 20 minutes, and a number of interfaces have also gone missing.\n\nUse the following command to determine if FPC0 has gone missing from the device.\n\nshow chassis fpc detail\nThis issue affects:\n\nJuniper Networks Junos OS on QFX5000 Series, EX4600 Series:\n\n\n\n * 18.4 version 18.4R2 and later versions prior to 20.4R3-S8;\n * 21.1 version 21.1R1 and later versions prior to 21.2R3-S6;\n * 21.3 versions prior to 21.3R3-S5;\n * 21.4 versions prior to 21.4R3-S4;\n * 22.1 versions prior to 22.1R3-S3;\n * 22.2 versions prior to 22.2R3-S1;\n * 22.3 versions prior to 22.3R2-S2, 22.3R3;\n * 22.4 versions prior to 22.4R2.\n\n\n\n\n\n\n"
},
{
"lang": "es",
"value": "Una vulnerabilidad de validaci\u00f3n de entrada incorrecta en Packet Forwarding Engine (PFE) VxLAN de Juniper Networks Junos OS en dispositivos de las series QFX5000 y EX4600 permite que un atacante adyacente no autenticado env\u00ede dos o m\u00e1s paquetes genuinos en la misma topolog\u00eda VxLAN para causar posiblemente una memoria DMA que se produzca una fuga en diversas condiciones operativas espec\u00edficas. El escenario descrito aqu\u00ed es el peor de los casos. Hay otros escenarios que requieren la acci\u00f3n del operador. Se puede ver un indicador de compromiso cuando varios dispositivos indican que FPC0 ha desaparecido al emitir un comando show chasis fpc durante aproximadamente 10 a 20 minutos, y tambi\u00e9n han desaparecido varias interfaces. Utilice el siguiente comando para determinar si FPC0 ha desaparecido del dispositivo. muestre el detalle del fpc del chasis Este problema afecta a: Juniper Networks Junos OS en las series QFX5000 y EX4600: * 18.4 versi\u00f3n 18.4R2 y versiones posteriores anteriores a 20.4R3-S8; * 21.1 versi\u00f3n 21.1R1 y versiones posteriores anteriores a 21.2R3-S6; * Versiones 21.3 anteriores a 21.3R3-S5; * Versiones 21.4 anteriores a 21.4R3-S4; * Versiones 22.1 anteriores a 22.1R3-S3; * Versiones 22.2 anteriores a 22.2R3-S1; * Versiones 22.3 anteriores a 22.3R2-S2, 22.3R3; * Versiones 22.4 anteriores a 22.4R2."
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],
"id": "CVE-2023-44183",
"lastModified": "2026-06-17T06:27:04.047",
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"userInteraction": "NONE",
"vectorString": "CVSS:3.1/AV:A/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H",
"version": "3.1"
},
"exploitabilityScore": 1.6,
"impactScore": 3.6,
"source": "nvd@nist.gov",
"type": "Primary"
}
],
"ssvcV203": [
{
"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
"ssvcData": {
"id": "CVE-2023-44183",
"options": [
{
"exploitation": "none"
},
{
"automatable": "no"
},
{
"technicalImpact": "partial"
}
],
"role": "CISA Coordinator",
"timestamp": "2024-09-18T14:40:50.513658Z",
"version": "2.0.3"
}
}
]
},
"published": "2023-10-13T00:15:11.983",
"references": [
{
"source": "sirt@juniper.net",
"tags": [
"Vendor Advisory"
],
"url": "https://supportportal.juniper.net/JSA73148"
},
{
"source": "sirt@juniper.net",
"tags": [
"Technical Description"
],
"url": "https://www.juniper.net/documentation/us/en/software/junos/evpn-vxlan/topics/topic-map/sdn-vxlan.html"
},
{
"source": "sirt@juniper.net",
"tags": [
"Technical Description"
],
"url": "https://www.juniper.net/documentation/us/en/software/junos/multicast-l2/topics/topic-map/redundant-trunk-groups.html"
},
{
"source": "af854a3a-2127-422b-91ae-364da2661108",
"tags": [
"Vendor Advisory"
],
"url": "https://supportportal.juniper.net/JSA73148"
},
{
"source": "af854a3a-2127-422b-91ae-364da2661108",
"tags": [
"Technical Description"
],
"url": "https://www.juniper.net/documentation/us/en/software/junos/evpn-vxlan/topics/topic-map/sdn-vxlan.html"
},
{
"source": "af854a3a-2127-422b-91ae-364da2661108",
"tags": [
"Technical Description"
],
"url": "https://www.juniper.net/documentation/us/en/software/junos/multicast-l2/topics/topic-map/redundant-trunk-groups.html"
}
],
"sourceIdentifier": "sirt@juniper.net",
"vulnStatus": "Modified",
"weaknesses": [
{
"description": [
{
"lang": "en",
"value": "CWE-20"
}
],
"source": "sirt@juniper.net",
"type": "Secondary"
},
{
"description": [
{
"lang": "en",
"value": "CWE-401"
}
],
"source": "nvd@nist.gov",
"type": "Primary"
}
]
}
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Experimental. This forecast is provided for visualization only and may change without notice. Do not use it for operational decisions.
Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.
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.
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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.
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