CVE-2019-1969 : Exploit Details and Defense Strategies

A vulnerability in Cisco NX-OS Software allows unauthorized SNMP polling due to an ACL configuration flaw.

Understanding CVE-2019-1969

This CVE involves a vulnerability in Cisco NX-OS Software that enables unauthorized SNMP polling on affected devices.

What is CVE-2019-1969?

The flaw in Cisco NX-OS Software affects the implementation of the Access Control List (ACL) feature within SNMP, allowing unauthorized SNMP polling even when denied in the device's configuration.

The Impact of CVE-2019-1969

Attackers can remotely conduct SNMP polling on targeted devices without authorization
Exploiting the flaw grants unauthorized access to conduct SNMP polling
The vulnerability stems from incorrect length verification of the configured ACL name

Technical Details of CVE-2019-1969

This section provides detailed technical information about the vulnerability.

Vulnerability Description

The vulnerability allows attackers to bypass ACL configurations and perform unauthorized SNMP polling.

Affected Systems and Versions

Product: Cisco NX-OS Software
Versions affected: Less than 9.2(3)

Exploitation Mechanism

Attack Complexity: Low
Attack Vector: Network
Base Score: 5.8 (Medium)
Integrity Impact: Low
Privileges Required: None

Mitigation and Prevention

Protect your systems from CVE-2019-1969 with these mitigation strategies.

Immediate Steps to Take

Apply vendor patches and updates promptly
Monitor network traffic for any suspicious SNMP activities
Restrict SNMP access to trusted sources

Long-Term Security Practices

Regularly update and patch all software and firmware
Conduct security audits and assessments periodically

Patching and Updates

Cisco has released patches to address this vulnerability
Ensure all affected systems are updated with the latest software versions