CVE-2023-0203 : Security Advisory and Response
Learn about CVE-2023-0203 impacting NVIDIA ConnectX Firmware. Unprivileged users can exploit access control issues for a denial of service attack.
This is a detailed overview of CVE-2023-0203, a vulnerability impacting NVIDIA ConnectX Firmware.
Understanding CVE-2023-0203
CVE-2023-0203 is a vulnerability found in NVIDIA ConnectX-5, ConnectX-6, and ConnectX6-DX NIC firmware that can be exploited by an unprivileged user, potentially resulting in denial of service.
What is CVE-2023-0203?
The vulnerability in the NVIDIA ConnectX Firmware allows an unprivileged user to exploit insufficient granularity of access control, leading to a denial of service attack.
The Impact of CVE-2023-0203
The primary impact of CVE-2023-0203 is a denial of service, affecting the availability of the affected systems.
Technical Details of CVE-2023-0203
The following technical details outline the vulnerability in more depth:
Vulnerability Description
The vulnerability arises from insufficient granularity of access control within the NIC firmware, which can be exploited by an unprivileged user.
Affected Systems and Versions
NVIDIA ConnectX-5, ConnectX-6, and ConnectX6-DX firmware versions prior to 35.1012 are affected by this vulnerability.
Exploitation Mechanism
An unprivileged user can exploit the lack of access control granularity to trigger a denial of service attack on the vulnerable systems.
Mitigation and Prevention
To address and prevent CVE-2023-0203, consider the following measures:
Immediate Steps to Take
- Update the affected NVIDIA ConnectX Firmware to version 35.1012 or above.
- Regular monitoring of network activity to detect any unusual behavior related to this vulnerability.
Long-Term Security Practices
- Implement least privilege access controls to restrict unprivileged users from exploiting system vulnerabilities.
- Conduct regular security audits and penetration testing to identify and remediate vulnerabilities proactively.
Patching and Updates
Stay informed about security updates and patches released by NVIDIA for the affected ConnectX Firmware, and ensure timely application of these patches to mitigate the risk of exploitation.