CVE-2025-59958 (GCVE-0-2025-59958)

Vulnerability from cvelistv5 – Published: 2025-10-09 15:44 – Updated: 2025-10-09 19:05
VLAI
Title
Junos OS Evolved: PTX Series: When a firewall filter rejects traffic these packets are erroneously sent to the RE
Summary
An Improper Check for Unusual or Exceptional Conditions vulnerability in the Packet Forwarding Engine (PFE) of Juniper Networks Junos OS Evolved on PTX Series allows an unauthenticated, network-based attacker to cause impact to confidentiality and availability. When an output firewall filter is configured with one or more terms where the action is 'reject', packets matching these terms are erroneously sent to the Routing Engine (RE) and further processed there. Processing of these packets will consume limited RE resources. Also responses from the RE back to the source of this traffic could reveal confidential information about the affected device. This issue only applies to firewall filters applied to WAN or revenue interfaces, so not the mgmt or lo0 interface of the routing-engine, nor any input filters. This issue affects Junos OS Evolved on PTX Series: * all versions before 22.4R3-EVO, * 23.2 versions before 23.2R2-EVO.
Severity
6.5 (Medium)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:L
6.9 (Medium)
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:N/VA:L/SC:N/SI:N/SA:N/RE:M
SSVC
Exploitation: none Automatable: yes Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2025-10-09 19:05 UTC
CWE
  • CWE-754 - Improper Check for Unusual or Exceptional Conditions
Assigner
juniper CNA under the mitre root
CNA scorecard B 84/100 over 193 records in the last 180 days details
References
Impacted products
Vendor Product Version CPE status
Juniper Networks Junos OS Evolved Affected: 0 , < 22.4R3-EVO (semver)
Affected: 23.2 , < 23.2R2-EVO (semver)
guessed Create a notification for this product.
Date Public
2025-10-08 16:00
Show details on NVD website
To clipboard 

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            "value": "An Improper Check for Unusual or Exceptional Conditions vulnerability in the Packet Forwarding Engine (PFE) of Juniper Networks Junos OS Evolved on PTX Series allows an unauthenticated, network-based attacker to cause impact to confidentiality and availability.\n\nWhen an output firewall filter is configured with one or more\u00a0terms where the action is \u0027reject\u0027, packets matching these terms are\u00a0erroneously sent to the Routing Engine (RE) and further processed there.\u00a0Processing of these packets will consume limited RE resources. Also responses from the RE back to the source of this traffic could reveal confidential information about the affected device.\nThis issue only applies to firewall filters applied to WAN or revenue interfaces, so not the mgmt or lo0 interface of the routing-engine, nor any input filters.\n\nThis issue affects Junos OS Evolved on PTX Series:\n\n\n\n  *  all versions before 22.4R3-EVO,\n  *  23.2 versions before 23.2R2-EVO."
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            "value": "Una vulnerabilidad de Comprobaci\u00f3n Incorrecta de Condiciones Inusuales o Excepcionales en el Motor de Reenv\u00edo de Paquetes (PFE) de Juniper Networks Junos OS Evolved en la Serie PTX permite a un atacante no autenticado, basado en red, causar impacto en la confidencialidad y disponibilidad.\n\nCuando un filtro de salida de cortafuegos est\u00e1 configurado con uno o m\u00e1s t\u00e9rminos donde la acci\u00f3n es \u0027reject\u0027, los paquetes que coinciden con estos t\u00e9rminos son enviados err\u00f3neamente al Motor de Enrutamiento (RE) y procesados all\u00ed. El procesamiento de estos paquetes consumir\u00e1 recursos limitados del RE. Adem\u00e1s, las respuestas del RE de vuelta a la fuente de este tr\u00e1fico podr\u00edan revelar informaci\u00f3n confidencial sobre el dispositivo afectado.\nEste problema solo se aplica a los filtros de cortafuegos aplicados a interfaces WAN o de ingresos, por lo tanto, no a la interfaz mgmt o lo0 del motor de enrutamiento, ni a ning\u00fan filtro de entrada.\n\nEste problema afecta a Junos OS Evolved en la Serie PTX:\n\n  *  todas las versiones anteriores a 22.4R3-EVO,\n  *  versiones 23.2 anteriores a 23.2R2-EVO."
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                "vectorString": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:N/VA:L/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:M/U:X",
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                "vulnerabilityResponseEffort": "MODERATE"
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              "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
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      "cve": "CVE-2025-59958",
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      "initial_release_date": "2025-10-08T16:00:00+00:00",
      "product_status:known_not_affected": "1",
      "source": "Red Hat CSAF VEX",
      "status": "final",
      "title": "Junos OS Evolved: PTX Series: When a firewall filter rejects traffic these packets are erroneously sent to the RE",
      "url": "https://security.access.redhat.com/data/csaf/v2/vex/2025/cve-2025-59958.json",
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                  "value": "To be affected by this issue a configuration like the following needs to be present:\u003cbr\u003e\u003cbr\u003e\u003ctt\u003e[\u0026nbsp;firewall family \u0026lt;family\u0026gt; filter \u0026lt;filter\u0026gt;\u0026nbsp;term \u0026lt;term\u0026gt;\u0026nbsp;then reject ]\u003cbr\u003e\n\n\u003cspan style=\"background-color: rgb(255, 255, 255);\"\u003e[ interfaces \u0026lt;interface\u0026gt; unit \u0026lt;unit\u0026gt; \u003c/span\u003e\u003cspan style=\"background-color: rgb(255, 255, 255);\"\u003efamily \u0026lt;family\u0026gt;\u0026nbsp;\u003c/span\u003e\u003cspan style=\"background-color: rgb(255, 255, 255);\"\u003efilter \u003c/span\u003e\u003cspan style=\"background-color: rgb(255, 255, 255);\"\u003eoutput \u0026lt;filter\u0026gt; ]\u003c/span\u003e\u003cbr\u003e\n\n\u003c/tt\u003e"
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                  "value": "An Improper Check for Unusual or Exceptional Conditions vulnerability in the Packet Forwarding Engine (PFE) of Juniper Networks Junos OS Evolved on PTX Series allows an unauthenticated, network-based attacker to cause impact to confidentiality and availability.\u003cbr\u003e\u003cbr\u003eWhen \u003cspan style=\"background-color: rgb(255, 255, 255);\"\u003ean output firewall filter is configured with one or more\u0026nbsp;\u003c/span\u003eterms where the action is \u0027reject\u0027, packets matching these terms are\u0026nbsp;erroneously sent to the Routing Engine (RE) and further processed there.\u0026nbsp;Processing of these packets will consume limited RE resources. Also responses from the RE back to the source of this traffic could reveal confidential information about the affected device.\u003cbr\u003eThis issue only applies to firewall filters applied to WAN or revenue interfaces, so not the mgmt or lo0 interface of the routing-engine, nor any input filters.\u003cbr\u003e\u003cbr\u003e\u003cp\u003eThis issue affects Junos OS Evolved on PTX Series:\u003c/p\u003e\u003cp\u003e\u003c/p\u003e\u003cul\u003e\u003cli\u003eall versions before 22.4R3-EVO,\u003c/li\u003e\u003cli\u003e23.2 versions before 23.2R2-EVO.\u003c/li\u003e\u003c/ul\u003e\u003cp\u003e\u003c/p\u003e\u003cp\u003e\u003cbr\u003e\u003c/p\u003e"
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}



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