PT-2019-2209 · Cisco · Cisco Small Business 300 Series Managed Switches

Publicado 2019-05-15 · Atualizado 2020-10-16 · CVE-2019-1814

Positive Technologies (AI Summary)

CVSS v3.1

8.6

Alta

Vetor base

AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H

Name of the Vulnerable Software and Affected Versions Cisco Small Business 300 Series (Sx300) Managed Switches (affected versions not specified)

Description A vulnerability in the interactions between the DHCP and TFTP features could allow an unauthenticated, remote attacker to cause the device to become low on system memory, leading to an unexpected reload of the device and resulting in a denial of service (DoS) condition. The issue is due to a failure to free system memory when an unexpected DHCP request is received. An attacker could exploit this by sending a crafted DHCP packet to the targeted device, potentially causing an unexpected reload.

Recommendations At the moment, there is no information about a newer version that contains a fix for this vulnerability.

Allocation of Resources Without Limits

Resource Exhaustion

Enumeração de Fraquezas

CWE-770

CWE-400

Identificadores relacionados

BDU:2019-01980

CVE-2019-1814

Produtos afetados

Cisco Small Business 300 Series Managed Switches

Referências · 5

• http://securityfocus.com/bid/108344 · Nota
• https://nvd.nist.gov/vuln/detail/CVE-2019-1814 · Nota de Segurança
• https://osv.dev/vulnerability/CVE-2019-1814 · Aviso do Fabricante
• https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20190515-sb300sms-dhcp · Aviso do Fabricante
• https://bdu.fstec.ru/vul/2019-01980 · Nota de Segurança