CVE-2019-6605 : What You Need to Know
Learn about CVE-2019-6605 affecting BIG-IP versions 11.5.1-11.5.8, 11.6.1-11.6.3.4, and 12.0.0. Discover the impact, technical details, and mitigation steps for this SSL virtual server DoS vulnerability.
CVE-2019-6605 was published on March 28, 2019, affecting BIG-IP versions 11.5.1-11.5.8, 11.6.1-11.6.3.4, and 12.0.0. The vulnerability could lead to a denial of service (DoS) attack under specific conditions.
Understanding CVE-2019-6605
This CVE involves a potential DoS risk on certain versions of BIG-IP due to the mishandling of specific packet sequences by SSL virtual servers.
What is CVE-2019-6605?
Versions 11.5.1-11.5.8, 11.6.1-11.6.3, and 12.0.x of BIG-IP may experience a denial of service if a particular packet sequence is received by an SSL virtual server and processed by a Client SSL or Server SSL profile.
The Impact of CVE-2019-6605
The vulnerability could allow attackers to exploit the SSL virtual server, potentially leading to a denial of service condition on the affected systems.
Technical Details of CVE-2019-6605
This section provides more in-depth technical insights into the CVE.
Vulnerability Description
An undisclosed sequence of packets received by an SSL virtual server and processed by an associated Client SSL or Server SSL profile may cause a denial of service on BIG-IP versions 11.5.1-11.5.8, 11.6.1-11.6.3, and 12.0.x.
Affected Systems and Versions
- BIG-IP versions 11.5.1-11.5.8
- BIG-IP versions 11.6.1-11.6.3.4
- BIG-IP version 12.0.0
Exploitation Mechanism
The vulnerability is triggered by a specific sequence of packets received by an SSL virtual server and processed by a Client SSL or Server SSL profile.
Mitigation and Prevention
Protecting systems from CVE-2019-6605 requires immediate actions and long-term security practices.
Immediate Steps to Take
- Apply vendor-supplied patches or updates promptly to mitigate the vulnerability.
- Monitor network traffic for any signs of exploitation.
Long-Term Security Practices
- Regularly update and patch systems to prevent known vulnerabilities.
- Implement network segmentation and access controls to limit the attack surface.
Patching and Updates
Ensure that all affected systems are updated with the latest patches provided by BIG-IP to address the vulnerability.