CVE-2019-1806 Information

Description

A vulnerability in the Simple Network Management Protocol (SNMP) input packet processor of Cisco Small Business Sx200 Sx300 Sx500 ESW2 Series Managed Switches and Small Business Sx250 Sx350 Sx550 Series Switches could allow an authenticated remote attacker to cause the SNMP application of an affected device to cease processing traffic resulting in the CPU utilization reaching one hundred percent. Manual intervention may be required before a device resumes normal operations. The vulnerability is due to improper validation of SNMP protocol data units (PDUs) in SNMP packets. An attacker could exploit this vulnerability by sending a malicious SNMP packet to an affected device. A successful exploit could allow the attacker to cause the device to cease forwarding traffic which could result in a denial of service (DoS) condition. Cisco has released firmware updates that address this vulnerability.

CVSS Vector

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:N/I:N/A:H

Reference

http://www.securityfocus.com/bid/108335 https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20190515-sb-snmpdos

Attack Complexity

LOW

Privileges Required

LOW

User Interaction Required

LOW

Scope

NONE

Confidentiality Impact

CHANGED

Integrity Impact

NONE

Availability Impact

NONE

Base Score

HIGH

Base Severity

7.7