CVE-2020-3235

Description

A vulnerability in the Simple Network Management Protocol (SNMP) subsystem of Cisco IOS Software and Cisco IOS XE Software on Catalyst 4500 Series Switches could allow an authenticated, remote attacker to cause a denial of service (DoS) condition. The vulnerability is due to insufficient input validation when the software processes specific SNMP object identifiers. An attacker could exploit this vulnerability by sending a crafted SNMP packet to an affected device. A successful exploit could allow the attacker to cause the affected device to reload, resulting in a DoS condition. Note: To exploit this vulnerability by using SNMPv2c or earlier, the attacker must know the SNMP read-only community string for an affected system. To exploit this vulnerability by using SNMPv3, the attacker must know the user credentials for the affected system.

Risk Information

Base Score

7.7

MODERATE

Vector

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

EPSS Score

Exploitation Probability

0.287

Associated Vulnerability

Vulnerability	OS Platform
Cisco IOS and IOS XE Software Simple Network Management Protocol Denial of Service Vulnerability For Cisco IOS	NCM
Cisco IOS and IOS XE Software Simple Network Management Protocol Denial of Service Vulnerability For Cisco IOS XE Software	NCM
Improper Input Validation Vulnerability (CVE-2020-3235)	NCM

Patch Details

Click to see the patches provided by ManageEngine for this CVE

Patch ID	Patch Description
PATCH-1706090	Security Update for Cisco IOS Amsterdam-17.2.1r
PATCH-1706107	Security Update for Cisco IOS XE Software 5.2(1)SV5(1.3a)

References

https://nvd.nist.gov/vuln/detail/CVE-2023-1234
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2023-1234