CVE-2020-13361 Explained : Impact and Mitigation
Learn about CVE-2020-13361, a QEMU vulnerability allowing out-of-bounds access. Find mitigation steps and affected systems in this detailed guide.
In QEMU 5.0.0 and earlier, a vulnerability in es1370_transfer_audio allows guest OS users to trigger an out-of-bounds access during an es1370_write() operation.
Understanding CVE-2020-13361
This CVE involves a flaw in QEMU that could be exploited by malicious guest OS users.
What is CVE-2020-13361?
The vulnerability in QEMU 5.0.0 and earlier allows unauthorized access during specific audio operations.
The Impact of CVE-2020-13361
The vulnerability could lead to out-of-bounds access, potentially enabling attackers to execute arbitrary code or crash the system.
Technical Details of CVE-2020-13361
QEMU vulnerability details and affected systems.
Vulnerability Description
The issue lies in es1370_transfer_audio in hw/audio/es1370.c, where frame count validation is inadequate.
Affected Systems and Versions
- Product: Not applicable
- Vendor: Not applicable
- Versions: All versions up to and including 5.0.0
Exploitation Mechanism
Attackers can exploit this vulnerability by manipulating frame counts during es1370_write() operations.
Mitigation and Prevention
Protecting systems from CVE-2020-13361.
Immediate Steps to Take
- Apply patches or updates provided by QEMU promptly.
- Monitor vendor advisories for security patches.
- Implement network segmentation to limit exposure.
Long-Term Security Practices
- Regularly update QEMU and other software components.
- Conduct security assessments and audits to identify vulnerabilities.
- Educate users on secure computing practices.
Patching and Updates
Ensure all QEMU installations are updated to versions that address CVE-2020-13361.