CVE-2019-12709 : Exploit Details and Defense Strategies
Learn about CVE-2019-12709, a vulnerability in Cisco IOS XR Software for Cisco ASR 9000 VMAN CLI allowing attackers to execute arbitrary commands with root privileges. Find mitigation steps and patching details here.
A vulnerability in a command line interface (CLI) command associated with the virtualization manager (VMAN) in Cisco iOS XR Software for Cisco ASR 9000 Series Aggregation Services Routers allows an authenticated, local attacker to execute arbitrary commands on the underlying Linux operating system with root privileges.
Understanding CVE-2019-12709
This CVE involves a privilege escalation vulnerability in Cisco IOS XR Software for Cisco ASR 9000 VMAN CLI.
What is CVE-2019-12709?
The vulnerability arises from inadequate validation of arguments passed to a specific VMAN CLI command on the affected device, enabling an attacker with valid administrator access to execute malicious commands with root privileges.
The Impact of CVE-2019-12709
If successfully exploited, this vulnerability could lead to a complete compromise of the system, allowing the attacker to run arbitrary commands on the underlying operating system.
Technical Details of CVE-2019-12709
This section provides detailed technical information about the vulnerability.
Vulnerability Description
The vulnerability allows an authenticated, local attacker to execute arbitrary commands on the Linux operating system with root privileges by manipulating arguments in a specific VMAN CLI command.
Affected Systems and Versions
- Product: Cisco IOS XR Software
- Vendor: Cisco
- Versions: Unspecified
Exploitation Mechanism
- Attack Complexity: Low
- Attack Vector: Local
- Privileges Required: High
- User Interaction: None
- Scope: Unchanged
- CVSS Base Score: 6.7 (Medium Severity)
- Confidentiality Impact: High
- Integrity Impact: High
- Availability Impact: High
Mitigation and Prevention
Effective strategies to mitigate and prevent the exploitation of CVE-2019-12709.
Immediate Steps to Take
- Apply vendor-provided patches or updates promptly.
- Monitor network traffic for any signs of exploitation.
- Restrict access to vulnerable systems.
Long-Term Security Practices
- Regularly update and patch all software and firmware.
- Implement the principle of least privilege to limit access rights for users.
- Conduct security training and awareness programs for employees.
Patching and Updates
- Cisco has released security updates to address this vulnerability. Ensure timely installation of these patches to secure the affected systems.