CVE-2019-1810 : What You Need to Know

A vulnerability in the Image Signature Verification feature used in a specific NX-OS CLI command on Cisco Nexus 3000 Series and 9000 Series Switches could allow a malicious individual to install harmful software images on affected devices.

Understanding CVE-2019-1810

This CVE involves a flaw in the Image Signature Verification feature of Cisco NX-OS Software, potentially enabling unauthorized software installation on targeted devices.

What is CVE-2019-1810?

The vulnerability arises from inadequate verification of software digital signatures during the execution of a CLI command, allowing attackers to install unsigned software images.

The Impact of CVE-2019-1810

CVSS Score: 6.7 (Medium Severity)
Attack Vector: Local
Confidentiality Impact: High
Integrity Impact: High
Availability Impact: High
Privileges Required: High

Technical Details of CVE-2019-1810

This section provides detailed technical information about the vulnerability.

Vulnerability Description

The flaw allows a local attacker with administrator-level privileges to install malicious software images on affected devices due to inadequate software signature verification.

Affected Systems and Versions

Product: Cisco NX-OS Software
Versions Affected: Less than 8.3(1)

Exploitation Mechanism

Attackers with local access and administrator-level privileges can exploit the vulnerability to install unsigned software images on targeted devices.

Mitigation and Prevention

Protecting systems from CVE-2019-1810 requires immediate actions and long-term security practices.

Immediate Steps to Take

Apply patches provided by Cisco to address the vulnerability.
Ensure devices are updated with the latest software versions.

Long-Term Security Practices

Implement strict access controls to limit administrator privileges.
Regularly monitor and audit software installations on devices.

Patching and Updates

Regularly check for security advisories from Cisco and apply patches promptly to mitigate risks.