CVE-2018-16847 : Vulnerability Insights and Analysis
Discover the impact of CVE-2018-16847, a high-severity vulnerability in QEMU's NVM Express Controller emulation, allowing unauthorized users to cause denial-of-service or execute malicious code.
A vulnerability was discovered in the QEMU NVM Express Controller emulation, allowing unauthorized users to potentially cause a denial-of-service or execute malicious code.
Understanding CVE-2018-16847
This CVE involves an out-of-bounds heap buffer read/write access issue in the QEMU NVM Express Controller emulation.
What is CVE-2018-16847?
The vulnerability exists within the nvme_cmb_ops routines of the nvme device in QEMU, enabling unauthorized users to exploit it for DoS attacks or code execution.
The Impact of CVE-2018-16847
- CVSS Score: 7 (High Severity)
- Attack Vector: Local
- Attack Complexity: High
- Availability Impact: High
- Scope: Changed
- Privileges Required: Low
- User Interaction: None
- Confidentiality & Integrity Impact: Low
- If exploited, this vulnerability could lead to a QEMU process crash or execution of malicious code by an unauthorized user.
Technical Details of CVE-2018-16847
This section provides more in-depth technical insights into the vulnerability.
Vulnerability Description
The vulnerability in QEMU's NVM Express Controller emulation allows for out-of-bounds heap buffer read/write access within the nvme_cmb_ops routines of the nvme device.
Affected Systems and Versions
- Affected Product: QEMU
- Vendor: [UNKNOWN]
- Affected Version: n/a
Exploitation Mechanism
Unauthorized users or processes within the guest system can exploit this weakness to crash the QEMU process or execute malicious code with the same privileges as the QEMU process.
Mitigation and Prevention
Protecting systems from CVE-2018-16847 requires immediate actions and long-term security practices.
Immediate Steps to Take
- Apply vendor patches promptly to address the vulnerability.
- Monitor for any unusual activities on the system that could indicate exploitation.
Long-Term Security Practices
- Regularly update and patch software to prevent known vulnerabilities.
- Implement access controls and restrictions to limit unauthorized access to critical systems.
Patching and Updates
Ensure that the latest patches and updates are applied to QEMU to mitigate the risk of exploitation.