CVE-2019-1778 : Security Advisory and Response
Learn about CVE-2019-1778, a vulnerability in Cisco NX-OS Software allowing attackers to execute arbitrary commands with root privileges on the underlying Linux OS. Find mitigation steps and impact details here.
Cisco NX-OS Software Command Injection Vulnerability allows an attacker to execute arbitrary commands with root privileges on the underlying Linux OS.
Understanding CVE-2019-1778
This CVE involves a vulnerability in the CLI of Cisco NX-OS Software that enables attackers to run commands with elevated privileges.
What is CVE-2019-1778?
The vulnerability arises from inadequate validation of arguments in a specific CLI command on the affected device, allowing attackers to execute arbitrary commands with root privileges on the Linux OS.
The Impact of CVE-2019-1778
- CVSS Base Score: 6.7 (Medium Severity)
- Attack Vector: Local
- Attack Complexity: Low
- Privileges Required: High
- Confidentiality Impact: High
- Integrity Impact: High
- Availability Impact: High
- Scope: Unchanged
- User Interaction: None
- This vulnerability could lead to unauthorized execution of commands with elevated privileges on the system.
Technical Details of CVE-2019-1778
Vulnerability Description
The vulnerability allows authenticated local attackers to execute arbitrary commands with root privileges on the Linux OS by exploiting a specific CLI command.
Affected Systems and Versions
- Affected Product: Cisco NX-OS Software
- Vendor: Cisco
- Affected Versions: Less than 7.0(3)I7(4) (unspecified version)
Exploitation Mechanism
- Attackers with valid administrator credentials can include malicious input as an argument in the affected command to exploit the vulnerability.
Mitigation and Prevention
Immediate Steps to Take
- Apply vendor-provided patches or updates promptly.
- Monitor network traffic for any signs of exploitation.
- Restrict access to administrative privileges.
Long-Term Security Practices
- Regularly update and patch software to mitigate known vulnerabilities.
- Implement strong password policies and multi-factor authentication.
Patching and Updates
- Cisco may release patches or updates to address this vulnerability. Stay informed through official advisories and apply patches as soon as they are available.