FKIE_CVE-2021-0267

Vulnerability from fkie_nvd - Published: 2021-04-22 20:15 - Updated: 2024-11-21 05:42
Severity ?
7.4 (High) - CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H
6.5 (Medium) - CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Summary
An Improper Input Validation vulnerability in the active-lease query portion in JDHCPD's DHCP Relay Agent of Juniper Networks Junos OS allows an attacker to cause a Denial of Service (DoS) by sending a crafted DHCP packet to the device thereby crashing the jdhcpd DHCP service. This is typically configured for Broadband Subscriber Sessions. Continued receipt and processing of this crafted packet will create a sustained Denial of Service (DoS) condition. This issue affects Juniper Networks Junos OS: 19.4 versions prior to 19.4R3-S1; 20.1 versions prior to 20.1R2-S1, 20.1R3; 20.2 versions prior to 20.2R3; 20.3 versions prior to 20.3R2. This issue does not affect Junos OS Evolved.
References
sirt@juniper.nethttps://kb.juniper.net/JSA11158Vendor Advisory
sirt@juniper.nethttps://www.juniper.net/documentation/us/en/software/junos/subscriber-mgmt-sessions/topics/ref/statement/active-leasequery-edit-forwarding-options.htmlVendor Advisory
af854a3a-2127-422b-91ae-364da2661108https://kb.juniper.net/JSA11158Vendor Advisory
af854a3a-2127-422b-91ae-364da2661108https://www.juniper.net/documentation/us/en/software/junos/subscriber-mgmt-sessions/topics/ref/statement/active-leasequery-edit-forwarding-options.htmlVendor Advisory
Impacted products
Vendor Product Version
juniper junos 19.4
juniper junos 19.4
juniper junos 19.4
juniper junos 19.4
juniper junos 19.4
juniper junos 19.4
juniper junos 19.4
juniper junos 20.1
juniper junos 20.1
juniper junos 20.1
juniper junos 20.1
juniper junos 20.1
juniper junos 20.1
juniper junos 20.2
juniper junos 20.2
juniper junos 20.2
juniper junos 20.2
juniper junos 20.2
juniper junos 20.2
juniper junos 20.2
juniper junos 20.2
juniper junos 20.3
juniper junos 20.3
To clipboard 

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      "value": "An Improper Input Validation vulnerability in the active-lease query portion in JDHCPD\u0027s DHCP Relay Agent of Juniper Networks Junos OS allows an attacker to cause a Denial of Service (DoS) by sending a crafted DHCP packet to the device thereby crashing the jdhcpd DHCP service. This is typically configured for Broadband Subscriber Sessions. Continued receipt and processing of this crafted packet will create a sustained Denial of Service (DoS) condition. This issue affects Juniper Networks Junos OS: 19.4 versions prior to 19.4R3-S1; 20.1 versions prior to 20.1R2-S1, 20.1R3; 20.2 versions prior to 20.2R3; 20.3 versions prior to 20.3R2. This issue does not affect Junos OS Evolved."
    },
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      "lang": "es",
      "value": "Una vulnerabilidad de Comprobaci\u00f3n de Entrada Inapropiada en una porci\u00f3n de consulta active-lease en DHCP Relay Agent de JDHCPD de Juniper Networks Junos OS, permite a un atacante causar una Denegaci\u00f3n de Servicio (DoS) mediante el env\u00edo de un paquete DHCP dise\u00f1ado hacia el dispositivo, lo que bloquea el servicio DHCP jdhcpd.\u0026#xa0;Por lo general, se configura para Broadband Subscriber Sessions.\u0026#xa0;La recepci\u00f3n y el procesamiento continuo de este paquete dise\u00f1ado crear\u00e1 una condici\u00f3n sostenida de Denegaci\u00f3n de Servicio (DoS).\u0026#xa0;Este problema afecta a Juniper Networks Junos OS: versiones 19.4 anteriores a 19.4R3-S1;\u0026#xa0;versiones 20.1 anteriores a 20.1R2-S1, 20.1R3;\u0026#xa0;20.2 versiones anteriores a 20.2R3;\u0026#xa0;20.3 versiones anteriores a 20.3R2.\u0026#xa0;Este problema no afecta a Junos OS Evolved"
    }
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  "id": "CVE-2021-0267",
  "lastModified": "2024-11-21T05:42:21.583",
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        "acInsufInfo": false,
        "baseSeverity": "LOW",
        "cvssData": {
          "accessComplexity": "LOW",
          "accessVector": "ADJACENT_NETWORK",
          "authentication": "NONE",
          "availabilityImpact": "PARTIAL",
          "baseScore": 3.3,
          "confidentialityImpact": "NONE",
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        "obtainOtherPrivilege": false,
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  "published": "2021-04-22T20:15:09.910",
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Sightings

Author Source Type Date

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.



Detection rules are retrieved from Rulezet.