CVE-2019-12656 Explained : Impact and Mitigation
Learn about CVE-2019-12656, a high-severity vulnerability in Cisco Industrial Routers Operating System Software that allows attackers to disrupt HTTPS request processing, leading to a denial of service (DoS) condition. Find mitigation steps and preventive measures here.
A vulnerability in the IOx application environment in various Cisco platforms could allow an unauthorized attacker to interrupt the processing of HTTPS requests by the IOx web server, leading to a denial of service (DoS) situation.
Understanding CVE-2019-12656
This CVE identifies a flaw in the implementation of Transport Layer Security (TLS) in Cisco Industrial Routers Operating System Software.
What is CVE-2019-12656?
The vulnerability allows attackers to disrupt HTTPS request processing by the IOx web server, causing a DoS condition by sending specially crafted TLS packets.
The Impact of CVE-2019-12656
- CVSS Base Score: 7.5 (High Severity)
- Attack Vector: Network
- Availability Impact: High
- Attackers can exploit this vulnerability to halt HTTPS request processing, leading to a DoS situation.
Technical Details of CVE-2019-12656
The following details provide a deeper insight into the vulnerability.
Vulnerability Description
The flaw in the IOx application environment allows attackers to disrupt HTTPS request processing by the IOx web server through specially crafted TLS packets.
Affected Systems and Versions
- Product: Cisco Industrial Routers Operating System Software
- Vendor: Cisco
- Version: Unspecified
Exploitation Mechanism
Attackers can exploit this vulnerability by sending specially designed TLS packets to the IOx web server on vulnerable devices, causing a DoS condition.
Mitigation and Prevention
Taking immediate steps and implementing long-term security practices are crucial to mitigate the risks associated with CVE-2019-12656.
Immediate Steps to Take
- Apply vendor-provided patches or updates promptly.
- Monitor network traffic for any suspicious activity targeting the vulnerability.
Long-Term Security Practices
- Regularly update and patch all software and firmware to prevent known vulnerabilities.
- Implement network segmentation and access controls to limit the impact of potential attacks.
- Conduct regular security assessments and penetration testing to identify and address security gaps.
- Stay informed about security advisories and best practices from vendors.
Patching and Updates
- Cisco has likely released patches or updates to address this vulnerability. Ensure timely application of these patches to secure affected systems.