CVE-2017-12299 : Exploit Details and Defense Strategies
Discover the impact of CVE-2017-12299, a flaw in Cisco ASA Next-Generation Firewall Services allowing unauthorized traffic to the local IP address. Learn about affected systems, exploitation, and mitigation steps.
A vulnerability exists in the process of creating default IP blocks during device initialization for Cisco ASA Next-Generation Firewall Services that could allow an unauthenticated, remote attacker to send traffic to the local IP address of the device, bypassing any filters that are configured to deny local IP management traffic. The flaw is attributed to an error in the implementation of default IP block creation during device initialization.
Understanding CVE-2017-12299
This CVE involves a vulnerability in Cisco ASA Next-Generation Firewall Services that could be exploited by an unauthorized individual to direct traffic to the device's local IP address, overriding filters.
What is CVE-2017-12299?
The flaw in the procedure of generating default IP blocks during the initial setup of Cisco ASA Next-Generation Firewall Services could allow unauthorized individuals to direct traffic to the device's local IP address, bypassing filters.
The Impact of CVE-2017-12299
Exploiting this vulnerability could enable an attacker to establish a connection to the device's local IP address, even if filters have been set up to block such traffic.
Technical Details of CVE-2017-12299
This section provides more technical insights into the vulnerability.
Vulnerability Description
The flaw is attributed to an error in the implementation of default IP block creation during device initialization and how these IP blocks interact with user-defined filters for local IP management traffic.
Affected Systems and Versions
- Product: Cisco ASA Next-Generation Firewall Services
- Version: Cisco ASA Next-Generation Firewall Services
Exploitation Mechanism
- Exploiting this flaw involves sending traffic to the targeted device's local IP address.
Mitigation and Prevention
Steps to address and prevent the exploitation of this vulnerability.
Immediate Steps to Take
- Apply the latest security patches provided by Cisco.
- Review and update firewall configurations to mitigate the risk.
Long-Term Security Practices
- Regularly monitor and update firewall rules and configurations.
- Conduct security assessments to identify and address vulnerabilities.
Patching and Updates
- Stay informed about security advisories and updates from Cisco.