cve-2024-21600
Vulnerability from cvelistv5
Published
2024-01-12 00:53
Modified
2024-08-01 22:27
Summary
An Improper Neutralization of Equivalent Special Elements vulnerability in the Packet Forwarding Engine (PFE) of Juniper Networks Junos OS on PTX Series allows a unauthenticated, adjacent attacker to cause a Denial of Service (DoS). When MPLS packets are meant to be sent to a flexible tunnel interface (FTI) and if the FTI tunnel is down, these will hit the reject NH, due to which the packets get sent to the CPU and cause a host path wedge condition. This will cause the FPC to hang and requires a manual restart to recover. Please note that this issue specifically affects PTX1000, PTX3000, PTX5000 with FPC3, PTX10002-60C, and PTX10008/16 with LC110x. Other PTX Series devices and Line Cards (LC) are not affected. The following log message can be seen when the issue occurs: Cmerror Op Set: Host Loopback: HOST LOOPBACK WEDGE DETECTED IN PATH ID <id> (URI: /fpc/<fpc>/pfe/<pfe>/cm/<cm>/Host_Loopback/<cm>/HOST_LOOPBACK_MAKE_CMERROR_ID[<id>]) This issue affects Juniper Networks Junos OS: * All versions earlier than 20.4R3-S8; * 21.1 versions earlier than 21.1R3-S4; * 21.2 versions earlier than 21.2R3-S6; * 21.3 versions earlier than 21.3R3-S3; * 21.4 versions earlier than 21.4R3-S5; * 22.1 versions earlier than 22.1R2-S2, 22.1R3; * 22.2 versions earlier than 22.2R2-S1, 22.2R3.
Impacted products
Vendor Product Version
Juniper Networks Junos OS Version: 0   
Version: 21.1   
Version: 21.2   
Version: 21.3   
Version: 21.4   
Version: 22.1   
Version: 22.2   
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Other PTX Series devices and Line Cards (LC) are not affected.\\n\\nThe following log message can be seen when the issue occurs:\\n\\nCmerror Op Set: Host Loopback: HOST LOOPBACK WEDGE DETECTED IN PATH ID <id> (URI: /fpc/<fpc>/pfe/<pfe>/cm/<cm>/Host_Loopback/<cm>/HOST_LOOPBACK_MAKE_CMERROR_ID[<id>])\\nThis issue affects Juniper Networks Junos OS:\\n\\n\\n\\n  *  All versions earlier than 20.4R3-S8;\\n  *  21.1 versions earlier than 21.1R3-S4;\\n  *  21.2 versions earlier than 21.2R3-S6;\\n  *  21.3 versions earlier than 21.3R3-S3;\\n  *  21.4 versions earlier than 21.4R3-S5;\\n  *  22.1 versions earlier than 22.1R2-S2, 22.1R3;\\n  *  22.2 versions earlier than 22.2R2-S1, 22.2R3.\\n\\n\\n\\n\\n\\n\\n\"},{\"lang\":\"es\",\"value\":\"Una vulnerabilidad de neutralización inadecuada de elementos especiales equivalentes en el motor de reenvío de paquetes (PFE) de Juniper Networks Junos OS en la serie PTX permite que un atacante adyacente no autenticado provoque una denegación de servicio (DoS). Cuando los paquetes MPLS deben enviarse a una interfaz de túnel flexible (FTI) y si el túnel FTI está inactivo, estos alcanzarán el NH rechazado, debido a lo cual los paquetes se envían a la CPU y provocan una condición de cuña en la ruta del host. Esto hará que el FPC se bloquee y requiera un reinicio manual para recuperarse. Tenga en cuenta que este problema afecta específicamente a PTX1000, PTX3000, PTX5000 con FPC3, PTX10002-60C y PTX10008/16 con LC110x. Otros dispositivos de la serie PTX y tarjetas de línea (LC) no se ven afectados. El siguiente mensaje de registro se puede ver cuando ocurre el problema: Cmerror Op Set: Host Loopback: HOST LOOPBACK WEDGE DETECTED IN PATH ID  (URI: /fpc//pfe//cm//Host_Loopback//HOST_LOOPBACK_MAKE_CMERROR_ID[]) Este problema afecta a Juniper Networks Junos OS: * Todas las versiones anteriores a 20.4R3-S8; * Versiones 21.1 anteriores a 21.1R3-S4; * Versiones 21.2 anteriores a 21.2R3-S6; * Versiones 21.3 anteriores a 21.3R3-S3; * Versiones 21.4 anteriores a 21.4R3-S5; * Versiones 22.1 anteriores a 22.1R2-S2, 22.1R3; * Versiones 22.2 anteriores a 22.2R2-S1, 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Advisory\"]},{\"url\":\"https://www.first.org/cvss/calculator/4.0#CVSS:4.0/AV:A/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:L\",\"source\":\"sirt@juniper.net\",\"tags\":[\"Third Party Advisory\"]},{\"url\":\"https://supportportal.juniper.net/JSA75741\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\",\"tags\":[\"Vendor Advisory\"]},{\"url\":\"https://www.first.org/cvss/calculator/4.0#CVSS:4.0/AV:A/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:L\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\",\"tags\":[\"Third Party Advisory\"]}]}}",
   },
}


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Sightings

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Nomenclature

  • Seen: The vulnerability was mentioned, discussed, or seen somewhere by the user.
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