CVE-2020-13765 : What You Need to Know

QEMU 4.0 and 4.1.0 are affected by a vulnerability in rom_copy() in hw/core/loader.c that allows attackers to trigger an invalid memory copy operation.

Understanding CVE-2020-13765

This CVE involves a lack of validation in memory copy operations in QEMU, potentially leading to security risks.

What is CVE-2020-13765?

The vulnerability in rom_copy() in QEMU 4.0 and 4.1.0 allows attackers to exploit an invalid memory copy operation by not validating the relationship between two addresses.

The Impact of CVE-2020-13765

This vulnerability could be exploited by attackers to trigger an invalid memory copy operation, potentially leading to security breaches and unauthorized access.

Technical Details of CVE-2020-13765

QEMU 4.0 and 4.1.0 are affected by a specific vulnerability in the rom_copy() function in hw/core/loader.c.

Vulnerability Description

The rom_copy() function in QEMU fails to validate the relationship between two addresses, enabling attackers to perform an invalid memory copy operation.

Affected Systems and Versions

Product: N/A
Vendor: N/A
Versions: 4.0 and 4.1.0

Exploitation Mechanism

Attackers can exploit this vulnerability by manipulating memory copy operations, potentially leading to unauthorized access and security breaches.

Mitigation and Prevention

To address CVE-2020-13765, follow these mitigation steps:

Immediate Steps to Take

Apply security patches provided by QEMU promptly.
Monitor for any unusual memory copy operations in the system.
Implement strict access controls to prevent unauthorized access.

Long-Term Security Practices

Regularly update QEMU to the latest versions to ensure security patches are in place.
Conduct regular security audits and vulnerability assessments.

Patching and Updates

Stay informed about security advisories from QEMU and apply patches as soon as they are released.