CVE-2020-27723 : Security Advisory and Response
Learn about CVE-2020-27723, a vulnerability in BIG-IP APM versions 14.1.0-14.1.3 and 13.1.0-13.1.3.4 that could lead to a DoS attack by restarting the Traffic Management Microkernel (TMM) process.
In versions 14.1.0-14.1.3 and 13.1.0-13.1.3.4 of BIG-IP APM, a vulnerability exists that could lead to a Denial of Service (DoS) attack by causing a restart of the Traffic Management Microkernel (TMM) process when processing PingAccess requests.
Understanding CVE-2020-27723
This CVE identifies a specific vulnerability in BIG-IP APM that can be exploited to trigger a DoS condition.
What is CVE-2020-27723?
The vulnerability in versions 14.1.0-14.1.3 and 13.1.0-13.1.3.4 of BIG-IP APM allows an attacker to potentially disrupt the normal operation of the Traffic Management Microkernel (TMM) process by sending malicious PingAccess requests.
The Impact of CVE-2020-27723
Exploitation of this vulnerability could result in a DoS condition, causing service disruption and potentially impacting the availability of the affected system.
Technical Details of CVE-2020-27723
This section provides more detailed technical information about the vulnerability.
Vulnerability Description
The vulnerability in BIG-IP APM versions 14.1.0-14.1.3 and 13.1.0-13.1.3.4 allows for a DoS attack by triggering a restart of the Traffic Management Microkernel (TMM) process when processing PingAccess requests.
Affected Systems and Versions
- Product: BIG-IP APM
- Versions Affected: 14.1.0-14.1.3, 13.1.0-13.1.3.4
Exploitation Mechanism
The vulnerability can be exploited by sending specially crafted PingAccess requests to the BIG-IP APM virtual server, leading to the restart of the TMM process.
Mitigation and Prevention
To address CVE-2020-27723 and enhance system security, the following steps are recommended:
Immediate Steps to Take
- Apply vendor-supplied patches or updates to mitigate the vulnerability.
- Monitor network traffic for any suspicious activity that could indicate exploitation attempts.
Long-Term Security Practices
- Regularly update and patch software to address known vulnerabilities.
- Implement network segmentation and access controls to limit the impact of potential attacks.
Patching and Updates
- Check with the vendor for available patches or updates to fix the vulnerability in affected versions of BIG-IP APM.