CVE-2019-6603 : Security Advisory and Response
Discover the impact of CVE-2019-6603 on BIG-IP versions 11.5.1-11.5.8, 11.6.1-11.6.3, 12.1.0-12.1.3, and 13.0.0-13.0.1. Learn about the DoS vulnerability caused by malformed TCP packets and how to mitigate it.
CVE-2019-6603 was published on March 28, 2019, affecting BIG-IP versions 11.5.1 to 11.5.8, 11.6.1 to 11.6.3, 12.1.0 to 12.1.3, and 13.0.0 to 13.0.1. The vulnerability involves the disruption of service due to malformed TCP packets targeting self IP addresses or FastL4 virtual servers.
Understanding CVE-2019-6603
This section provides insights into the nature and impact of the CVE-2019-6603 vulnerability.
What is CVE-2019-6603?
CVE-2019-6603 is a Denial of Service (DoS) vulnerability that affects specific versions of BIG-IP, potentially leading to service disruption when malformed TCP packets are directed at certain network components.
The Impact of CVE-2019-6603
The vulnerability can result in a disruption of service for data plane virtual servers and self IPs within the affected BIG-IP versions. Notably, the control plane remains unaffected by this issue.
Technical Details of CVE-2019-6603
Explore the technical aspects of CVE-2019-6603 to understand its implications and mechanisms.
Vulnerability Description
The vulnerability arises when malformed TCP packets are sent to self IP addresses or FastL4 virtual servers, causing a disruption of service specifically for data plane virtual servers and self IPs.
Affected Systems and Versions
- BIG-IP versions 11.5.1 to 11.5.8
- BIG-IP versions 11.6.1 to 11.6.3
- BIG-IP versions 12.1.0 to 12.1.3
- BIG-IP versions 13.0.0 to 13.0.1
Exploitation Mechanism
The vulnerability is exploited by sending malformed TCP packets to targeted self IP addresses or FastL4 virtual servers, triggering a service disruption.
Mitigation and Prevention
Learn how to address and prevent the CVE-2019-6603 vulnerability effectively.
Immediate Steps to Take
- Apply vendor-provided patches or updates for the affected BIG-IP versions.
- Implement network-level protections to filter out potentially malicious traffic targeting self IPs or virtual servers.
Long-Term Security Practices
- Regularly monitor network traffic for anomalies that could indicate exploitation attempts.
- Conduct security assessments and audits to identify and mitigate potential vulnerabilities proactively.
Patching and Updates
- Stay informed about security advisories from BIG-IP and promptly apply patches or updates to mitigate known vulnerabilities.