CVE-2019-1779 : Exploit Details and Defense Strategies
Learn about CVE-2019-1779, a vulnerability in Cisco FXOS and NX-OS Software allowing local attackers to execute arbitrary commands with elevated privileges. Find mitigation steps and preventive measures here.
A vulnerability in Cisco FXOS Software and Cisco NX-OS Software allows a local attacker to execute arbitrary commands with elevated privileges. The flaw arises from inadequate validation of CLI command arguments.
Understanding CVE-2019-1779
This CVE involves a command injection vulnerability in Cisco FXOS Software and Cisco NX-OS Software, potentially enabling attackers to execute arbitrary commands with elevated privileges.
What is CVE-2019-1779?
The vulnerability allows authenticated local attackers to run arbitrary commands on affected devices' operating systems by exploiting insufficient validation of CLI command arguments.
The Impact of CVE-2019-1779
- CVSS Base Score: 4.2 (Medium Severity)
- Attack Vector: Local
- Privileges Required: High
- Confidentiality Impact: Low
- Integrity Impact: Low
- Availability Impact: Low
Technical Details of CVE-2019-1779
This section provides detailed technical information about the vulnerability.
Vulnerability Description
The flaw in Cisco FXOS Software and Cisco NX-OS Software allows local attackers to execute arbitrary commands with elevated privileges due to inadequate validation of CLI command arguments.
Affected Systems and Versions
- Affected Product: Cisco NX-OS Software
- Vendor: Cisco
- Affected Versions: Less than 8.3(1) (Custom Version)
Exploitation Mechanism
Attackers with valid device credentials can input malicious content as arguments of specific CLI commands to exploit the vulnerability and execute arbitrary commands with elevated privileges.
Mitigation and Prevention
Protect your systems from CVE-2019-1779 with the following steps:
Immediate Steps to Take
- Regularly monitor and restrict access to CLI commands.
- Implement strong password policies and multi-factor authentication.
- Apply the latest security patches and updates from Cisco.
Long-Term Security Practices
- Conduct regular security training for staff on identifying and reporting suspicious activities.
- Implement network segmentation to limit the impact of potential breaches.
Patching and Updates
- Stay informed about security advisories from Cisco.
- Apply patches and updates promptly to address known vulnerabilities.