CVE-2020-4788 : Security Advisory and Response
Learn about CVE-2020-4788, a vulnerability in IBM Power9 processors in AIX 7.1, 7.2, and VIOS 3.1 allowing unauthorized access to sensitive data. Find mitigation steps and impact details.
IBM Power9 processors in AIX 7.1, 7.2, and VIOS 3.1 could allow local users to access sensitive data in the L1 cache. Learn about the impact, technical details, and mitigation steps.
Understanding CVE-2020-4788
IBM Power9 processors in AIX 7.1, 7.2, and VIOS 3.1 are vulnerable to a security issue that could lead to unauthorized access to sensitive information.
What is CVE-2020-4788?
CVE-2020-4788 is a vulnerability in IBM Power9 processors that could allow a local user to obtain sensitive information from the L1 cache under specific circumstances.
The Impact of CVE-2020-4788
- CVSS Base Score: 5.1 (Medium)
- Attack Vector: Local
- Confidentiality Impact: High
- Exploit Code Maturity: Unproven
- Vector String: CVSS:3.0/PR:N/C:H/AV:L/AC:H/S:U/A:N/I:N/UI:N/E:U/RC:C/RL:O
Technical Details of CVE-2020-4788
Vulnerability Description
The vulnerability allows local users to access sensitive data in the L1 cache of IBM Power9 processors.
Affected Systems and Versions
- Products Affected: VIOS 3.1, AIX 7.1, AIX 7.2
Exploitation Mechanism
The vulnerability could be exploited by a local user under specific extenuating circumstances.
Mitigation and Prevention
Immediate Steps to Take
- Apply official fixes provided by IBM
- Monitor IBM's security bulletins for updates
Long-Term Security Practices
- Regularly update and patch affected systems
- Implement least privilege access controls
Patching and Updates
Stay informed about security advisories and patches released by IBM to address CVE-2020-4788.