CVE-2021-0236 (GCVE-0-2021-0236)
Vulnerability from cvelistv5
Published
2021-04-22 19:37
Modified
2024-09-16 19:15
Severity ?
6.5 (Medium) - CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
CWE
  • CWE-754 - Improper Check for Unusual or Exceptional Conditions
  • Denial of Service (DoS)
Summary
Due to an improper check for unusual or exceptional conditions in Juniper Networks Junos OS and Junos OS Evolved the Routing Protocol Daemon (RPD) service, upon receipt of a specific matching BGP packet meeting a specific term in the flowspec configuration, crashes and restarts causing a Denial of Service (DoS). Continued receipt and processing of this packet will create a sustained Denial of Service (DoS) condition. This issue affects only Multiprotocol BGP (MP-BGP) VPNv6 FlowSpec deployments. This issue affects: Juniper Networks Junos OS: 18.4 versions prior to 18.4R1-S8, 18.4R2-S7, 18.4R3-S7; 19.1 versions prior to 19.1R2-S2, 19.1R3-S4; 19.2 versions prior to 19.2R1-S6, 19.2R3-S2; 19.3 versions prior to 19.3R3-S2; 19.4 versions prior to 19.4R2-S4, 19.4R3-S1; 20.1 versions prior to 20.1R2, 20.1R3; 20.2 versions prior to 20.2R2, 20.2R3; 20.3 versions prior to 20.3R1-S1, 20.3R2. Juniper Networks Junos OS Evolved: All versions after 18.4R1-EVO prior to 20.3R2-EVO. This issue does not affect: Juniper Networks Junos OS versions prior to 18.4R1. Juniper Networks Junos OS Evolved versions prior to 18.4R1-EVO.
References
Impacted products
Vendor Product Version
Juniper Networks Junos OS Patch: unspecified   < 18.4R1
Version: 18.4   < 18.4R1-S8, 18.4R2-S7, 18.4R3-S7
Version: 19.1   < 19.1R2-S2, 19.1R3-S4
Version: 19.2   < 19.2R1-S6, 19.2R3-S2
Version: 19.3   < 19.3R3-S2
Version: 19.4   < 19.4R2-S4, 19.4R3-S1
Version: 20.1   < 20.1R2, 20.1R3, 20.1R3-EVO
Version: 20.2   < 20.2R2, 20.2R3, 20.2R3-EVO
Version: 20.3   < 20.3R1-S1, 20.3R2, 20.3R2-EVO
 Create a notification for this product.
   Juniper Networks Junos OS Evolved Patch: unspecified   < 18.4R1-EVO
Version: 20.3-EVO   < 20.3R2-EVO
 Create a notification for this product.
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Juniper Networks Junos OS Evolved versions prior to 18.4R1-EVO.\"},{\"lang\":\"es\",\"value\":\"Debido a una comprobaci\u00f3n inapropiada de condiciones inusuales o excepcionales en Juniper Networks Junos OS y  Junos OS Evolved, el Routing Protocol Daemon (RPD), al recibir un paquete BGP espec\u00edfico que coincide con un t\u00e9rmino espec\u00edfico en la configuraci\u00f3n de flowpec, se bloquea y se reinicia causando una Denegaci\u00f3n de Servicio (DoS).\u0026#xa0;La recepci\u00f3n y el procesamiento continuo de este paquete crear\u00e1n una condici\u00f3n sostenida de Denegaci\u00f3n de Servicio (DoS).\u0026#xa0;Este problema afecta solo a las implementaciones Multiprotocol BGP (MP-BGP) VPNv6 FlowSpec.\u0026#xa0;Este problema afecta a: Juniper Networks Junos OS: versiones 18.4 anteriores a 18.4R1-S8, 18.4R2-S7, 18.4R3-S7;\u0026#xa0;versiones 19.1 anteriores a 19.1R2-S2, 19.1R3-S4;\u0026#xa0;versiones 19.2  anteriores a 19.2R1-S6, 19.2R3-S2;\u0026#xa0;versiones 19.3 anteriores a 19.3R3-S2;\u0026#xa0;versiones 19.4 anteriores a 19.4R2-S4, 19.4R3-S1;\u0026#xa0;versiones 20.1 anteriores a 20.1R2, 20.1R3;\u0026#xa0;versiones 20.2 anteriores a 20.2R2, 20.2R3;\u0026#xa0;versiones 20.\u0026#xa0;3 anteriores a 20.3R1-S1, 20.3R2.\u0026#xa0;Juniper Networks Junos OS Evolved: todas las versiones posteriores a 18.4R1-EVO anteriores a 20.3R2-EVO.\u0026#xa0;Este problema no afecta a: Juniper Networks Junos OS versiones anteriores a 18.4R1.\u0026#xa0;Juniper Networks Junos OS Evolved versiones anteriores a 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Advisory\"]},{\"url\":\"https://kb.juniper.net/JSA11131\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\",\"tags\":[\"Vendor Advisory\"]}]}}"
  }
}


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