CVE-2020-12961 Explained : Impact and Mitigation
Learn about CVE-2020-12961, a vulnerability in AMD Platform Security Processor (PSP) allowing attackers to zero privileged registers on the System Management Network, potentially bypassing SPI ROM protections. Find mitigation steps and affected systems.
A potential vulnerability exists in AMD Platform Security Processor (PSP) that may allow an attacker to zero any privileged register on the System Management Network, potentially bypassing SPI ROM protections.
Understanding CVE-2020-12961
This CVE involves a security vulnerability in AMD's Platform Security Processor (PSP) that could be exploited by attackers.
What is CVE-2020-12961?
The vulnerability in the AMD Platform Security Processor (PSP) could enable attackers to zero privileged registers on the System Management Network, potentially leading to bypassing SPI ROM protections.
The Impact of CVE-2020-12961
The exploitation of this vulnerability could result in a security breach allowing unauthorized access to sensitive information or control over the affected systems.
Technical Details of CVE-2020-12961
This section provides more technical insights into the CVE.
Vulnerability Description
The vulnerability involves improper input validation in the AMD Platform Security Processor (PSP), allowing attackers to manipulate privileged registers.
Affected Systems and Versions
- 2nd Gen AMD EPYC™: Versions less than RomePI-SP3_1.0.0.C are affected.
- 3rd Gen AMD EPYC™: Versions less than MilanPI-SP3_1.0.0.4 are affected.
Exploitation Mechanism
Attackers can exploit this vulnerability to zero privileged registers on the System Management Network, potentially bypassing SPI ROM protections.
Mitigation and Prevention
Protecting systems from this vulnerability requires immediate actions and long-term security practices.
Immediate Steps to Take
- Apply patches or updates provided by AMD to address the vulnerability.
- Monitor AMD's security bulletins and advisories for any further instructions.
Long-Term Security Practices
- Implement network segmentation to limit the impact of potential attacks.
- Regularly update and patch systems to prevent vulnerabilities.
Patching and Updates
- Ensure all affected systems are updated with the latest patches from AMD to mitigate the vulnerability.