CVE-2019-1759 : Exploit Details and Defense Strategies
Learn about CVE-2019-1759, a vulnerability in Cisco IOS XE Software allowing unauthorized remote access to IP addresses on the Gigabit Ethernet Management interface. Find mitigation steps and patch details.
A weakness has been identified in the access control list (ACL) feature of the Gigabit Ethernet Management interface in Cisco IOS XE Software, potentially allowing unauthorized remote access to IP addresses configured on the interface.
Understanding CVE-2019-1759
What is CVE-2019-1759?
The vulnerability in Cisco IOS XE Software could be exploited by an unauthorized remote attacker to gain access to IP addresses configured on the Gigabit Ethernet Management interface.
The Impact of CVE-2019-1759
The vulnerability stems from a logic error introduced in Cisco IOS XE Software 16.1.1, causing the ACL to malfunction when applied to the management interface.
Technical Details of CVE-2019-1759
Vulnerability Description
- Vulnerability in ACL functionality of Gigabit Ethernet Management interface
- Logic error in Cisco IOS XE Software 16.1.1 Release
- Unauthorized remote access to IP addresses
Affected Systems and Versions
- Cisco IOS XE Software versions 3.2.0JA, 16.2.1, 16.2.2, 16.3.1 to 16.9.1d
Exploitation Mechanism
- Attacker needs to attempt access through the management interface
Mitigation and Prevention
Immediate Steps to Take
- Apply vendor-provided patches
- Monitor network for unauthorized access
- Restrict access to management interfaces
Long-Term Security Practices
- Regularly update and patch software
- Implement network segmentation
- Conduct security audits and assessments
Patching and Updates
- Refer to Cisco's security advisory for specific patch details