CVE-2019-1901 (GCVE-0-2019-1901)

Vulnerability from cvelistv5 – Published: 2019-07-31 17:25 – Updated: 2024-11-20 17:15
VLAI?
Title
Cisco Nexus 9000 Series ACI Mode Switch Software Link Layer Discovery Protocol Buffer Overflow Vulnerability
Summary
A vulnerability in the Link Layer Discovery Protocol (LLDP) subsystem of Cisco Nexus 9000 Series Application Centric Infrastructure (ACI) Mode Switch Software could allow an adjacent, unauthenticated attacker to cause a denial of service (DoS) condition or execute arbitrary code with root privileges. The vulnerability is due to improper input validation of certain type, length, value (TLV) fields of the LLDP frame header. An attacker could exploit this vulnerability by sending a crafted LLDP packet to the targeted device. A successful exploit may lead to a buffer overflow condition that could either cause a DoS condition or allow the attacker to execute arbitrary code with root privileges. Note: This vulnerability cannot be exploited by transit traffic through the device; the crafted packet must be targeted to a directly connected interface. This vulnerability affects Cisco Nexus 9000 Series Fabric Switches in ACI mode if they are running a Cisco Nexus 9000 Series ACI Mode Switch Software release prior to 13.2(7f) or any 14.x release.
Severity ?
8.8 (High)
CVSS:3.0/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
CWE
Assigner
References
https://tools.cisco.com/security/center/content/C… vendor-advisoryx_refsource_CISCO
Impacted products
Vendor Product Version
Cisco Cisco NX-OS System Software Affected: unspecified , < 13.2(7f) (custom)
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Note: This vulnerability cannot be exploited by transit traffic through the device; the crafted packet must be targeted to a directly connected interface. This vulnerability affects Cisco Nexus 9000 Series Fabric Switches in ACI mode if they are running a Cisco Nexus 9000 Series ACI Mode Switch Software release prior to 13.2(7f) or any 14.x release.\"},{\"lang\":\"es\",\"value\":\"Una vulnerabilidad en el subsistema de protocolo de descubrimiento de capa de enlace (LLDP) del software de cambio de modo de infraestructura centrada en aplicaciones (ACI) de Cisco Nexus serie 9000 podr\u00eda permitir que un atacante adyacente no autenticado cause una condici\u00f3n de denegaci\u00f3n de servicio (DoS) o ejecute c\u00f3digo arbitrario con privilegios de root . La vulnerabilidad se debe a una validaci\u00f3n de entrada incorrecta de ciertos campos de tipo, longitud, valor (TLV) del encabezado de trama LLDP. Un atacante podr\u00eda aprovechar esta vulnerabilidad enviando un paquete LLDP dise\u00f1ado al dispositivo de destino. Una explotaci\u00f3n con \u00e9xito puede conducir a una condici\u00f3n de desbordamiento del b\u00fafer que podr\u00eda causar una condici\u00f3n DoS o permitir al atacante ejecutar c\u00f3digo arbitrario con privilegios de root. Nota: Esta vulnerabilidad no puede ser explotada por el tr\u00e1fico de tr\u00e1nsito a trav\u00e9s del dispositivo; el paquete especialmente dise\u00f1ado debe estar dirigido a una interfaz conectada directamente. 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}


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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.