CVE-2019-12660 : What You Need to Know
Learn about CVE-2019-12660, a weakness in Cisco IOS XE Software CLI allowing local attackers to manipulate device configurations. Find mitigation steps and prevention measures here.
Cisco IOS XE Software ASIC Register Write Vulnerability is a weakness in the Command Line Interface (CLI) of Cisco IOS XE Software, allowing a local authenticated attacker to write values to the device's memory. This vulnerability stems from inadequate input validation and authorization of specific CLI commands.
Understanding CVE-2019-12660
This CVE involves a security weakness in Cisco IOS XE Software that could be exploited by an authenticated attacker to manipulate device configurations.
What is CVE-2019-12660?
The vulnerability in Cisco IOS XE Software allows a local attacker to write values to the device's memory by executing a sequence of commands within the CLI after authentication.
The Impact of CVE-2019-12660
The vulnerability could lead to unauthorized configuration changes, rendering the device insecure and causing abnormal functionality.
Technical Details of CVE-2019-12660
This section provides more technical insights into the vulnerability.
Vulnerability Description
The weakness in the CLI of Cisco IOS XE Software enables an authenticated attacker to write values to the device's memory due to insufficient input validation and command authorization.
Affected Systems and Versions
- Product: Cisco IOS XE Software 3.2.11aSG
- Vendor: Cisco
- Version: Unspecified
Exploitation Mechanism
To exploit this vulnerability, the attacker must authenticate to the affected device and execute a predefined sequence of commands.
Mitigation and Prevention
Protecting systems from CVE-2019-12660 requires immediate actions and long-term security practices.
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 strong authentication mechanisms.
- Conduct security training for users to recognize and report suspicious activities.
Patching and Updates
Ensure that the affected Cisco IOS XE Software version is updated with the latest patches to mitigate the vulnerability.