CVE-2019-6647 : Vulnerability Insights and Analysis
Learn about CVE-2019-6647, a memory leakage vulnerability impacting BIG-IP versions 11.5.2-14.1.0.5 when authenticating control-plane users. Find out the impact, affected systems, exploitation mechanism, and mitigation steps.
A memory leakage vulnerability affecting BIG-IP versions 11.5.2-14.1.0.5 when authenticating control-plane users, potentially leading to a denial-of-service (DoS) condition.
Understanding CVE-2019-6647
This CVE involves a memory leakage issue on specific versions of BIG-IP when processing authentication attempts for control-plane users, which could be exploited by attackers to exhaust system memory.
What is CVE-2019-6647?
The vulnerability in BIG-IP versions 11.5.2-14.1.0.5 allows attackers with access to the management interface to gradually deplete system memory, potentially causing a DoS condition. Although rare, this issue poses a risk to system stability.
The Impact of CVE-2019-6647
The exploitation of this vulnerability could result in a gradual depletion of memory on affected systems, leading to performance degradation and potential service unavailability.
Technical Details of CVE-2019-6647
This section provides detailed technical information about the vulnerability.
Vulnerability Description
MCPD on BIG-IP versions 11.5.2-14.1.0.5 leaks memory when processing authentication attempts for control-plane users, allowing attackers to exhaust system memory.
Affected Systems and Versions
- BIG-IP versions 14.1.0-14.1.0.5
- BIG-IP versions 14.0.0-14.0.0.4
- BIG-IP versions 13.0.0-13.1.2
- BIG-IP versions 12.1.0-12.1.4.1
- BIG-IP versions 11.5.2-11.6.4
Exploitation Mechanism
Attackers gaining access to the management interface can exploit this vulnerability by repeatedly authenticating control-plane users, causing memory leakage and eventual depletion.
Mitigation and Prevention
Protecting systems from CVE-2019-6647 requires immediate actions and long-term security practices.
Immediate Steps to Take
- Apply vendor-supplied patches or updates to mitigate the vulnerability.
- Monitor system memory usage for any unusual patterns that could indicate exploitation.
Long-Term Security Practices
- Implement strong access controls to limit unauthorized access to the management interface.
- Regularly update and patch systems to address known vulnerabilities and enhance security.
Patching and Updates
- F5 has released patches to address the memory leakage issue on affected BIG-IP versions.