CVE-2019-3812 : Vulnerability Insights and Analysis

CVE-2019-3812 was published on February 19, 2019, by Red Hat. The vulnerability affects QEMU versions up to 2.10 and up to 3.1.0, allowing a local attacker to read stack memory. The CVSS base score is 4.4 (Medium Severity).

Understanding CVE-2019-3812

QEMU vulnerability impacting versions up to 2.10 and up to 3.1.0.

What is CVE-2019-3812?

QEMU has a vulnerability in the i2c_ddc() function, enabling a local attacker to read stack memory.

The Impact of CVE-2019-3812

CVSS Base Score: 4.4 (Medium Severity)
Confidentiality Impact: High
Privileges Required: High
Attack Vector: Local

Technical Details of CVE-2019-3812

QEMU vulnerability details.

Vulnerability Description

The vulnerability in the i2c_ddc() function allows a local attacker to read stack memory.

Affected Systems and Versions

Affected Product: QEMU
Vendor: The QEMU Project
Affected Versions: Up to version 2.10 and up to 3.1.0

Exploitation Mechanism

The vulnerability permits a local attacker executing i2c commands to access up to 128 bytes of stack memory.

Mitigation and Prevention

Steps to mitigate the CVE-2019-3812 vulnerability.

Immediate Steps to Take

Update QEMU to a patched version.
Restrict access to privileged commands.
Monitor and restrict local access to vulnerable systems.

Long-Term Security Practices

Regularly update software and apply security patches.
Implement the principle of least privilege to limit access rights.
Conduct security training for users to recognize and report suspicious activities.

Patching and Updates

Apply the latest security patches provided by QEMU to address the vulnerability.