CVE-2020-17390 : What You Need to Know
Learn about CVE-2020-17390, a privilege escalation vulnerability in Parallels Desktop 15.1.2-47123, allowing local attackers to execute code in the hypervisor context. Find mitigation steps and preventive measures here.
This vulnerability allows local attackers to escalate privileges on affected installations of Parallels Desktop 15.1.2-47123. An attacker must first obtain the ability to execute low-privileged code on the target system to exploit this flaw.
Understanding CVE-2020-17390
This CVE involves a privilege escalation vulnerability in Parallels Desktop 15.1.2-47123.
What is CVE-2020-17390?
CVE-2020-17390 is a vulnerability that enables local attackers to elevate their privileges on systems running Parallels Desktop 15.1.2-47123. The flaw exists within the hypervisor kernel extension due to inadequate validation of user-supplied data, leading to a buffer read overflow.
The Impact of CVE-2020-17390
The impact of this vulnerability is rated as low severity, with a CVSS base score of 3.8. The attack complexity is low, requiring local access and low privileges. Successful exploitation allows attackers to execute code in the hypervisor context.
Technical Details of CVE-2020-17390
This section provides more technical insights into the vulnerability.
Vulnerability Description
The vulnerability stems from a lack of proper validation of user-supplied data, resulting in a read past the end of an allocated buffer within the hypervisor kernel extension.
Affected Systems and Versions
- Product: Parallels Desktop
- Vendor: Parallels
- Version: 15.1.2-47123
Exploitation Mechanism
To exploit this vulnerability, an attacker needs the ability to execute low-privileged code on the target system. By leveraging the flaw in the hypervisor kernel extension, attackers can escalate their privileges.
Mitigation and Prevention
Protecting systems from CVE-2020-17390 requires immediate actions and long-term security practices.
Immediate Steps to Take
- Apply security patches provided by Parallels promptly.
- Monitor for any unusual system behavior that could indicate exploitation.
Long-Term Security Practices
- Implement the principle of least privilege to restrict user access.
- Regularly update and patch software to address known vulnerabilities.
Patching and Updates
Ensure that Parallels Desktop is updated to a secure version that addresses the privilege escalation vulnerability.