CVE-2021-43003 : Security Advisory and Response
Learn about CVE-2021-43003 affecting Amzetta zPortal Windows zClient <= v3.2.8180.148. Find out how local attackers can execute code or cause denial of service. Take immediate steps and long-term security practices to mitigate risks.
Amzetta zPortal Windows zClient <= v3.2.8180.148 is susceptible to Integer Overflow, allowing local attackers to execute arbitrary code or cause denial of service.
Understanding CVE-2021-43003
What is CVE-2021-43003?
The vulnerability in Amzetta zPortal Windows zClient enables local attackers to trigger memory corruption or OS crash through crafted I/O Request Packets.
The Impact of CVE-2021-43003
The security flaw permits local attackers to execute arbitrary code in kernel mode or disrupt system function by instigating a denial of service.
Technical Details of CVE-2021-43003
Vulnerability Description
The Integer Overflow issue in IOCTL Handler 0x22001B of Amzetta zPortal Windows zClient <= v3.2.8180.148 facilitates the execution of malicious code or causing system crashes.
Affected Systems and Versions
- Product: Amzetta zPortal Windows zClient
- Vendor: Not applicable
- Versions: <= v3.2.8180.148
Exploitation Mechanism
The vulnerability can be exploited by local attackers through specially crafted I/O Request Packets to trigger memory corruption or OS crash.
Mitigation and Prevention
Immediate Steps to Take
- Apply vendor-released patches promptly to address the vulnerability.
- Monitor for any suspicious activities on affected systems.
Long-Term Security Practices
- Regularly update and patch all software and systems to mitigate security risks.
- Implement least privilege access controls and network segmentation.
- Conduct security training for personnel to enhance awareness of potential threats.
Patching and Updates
Ensure all systems and software are regularly patched and updated to prevent exploitation of known vulnerabilities.