CVE-2022-42273 : Security Advisory and Response

This article provides an in-depth understanding of CVE-2022-42273, a vulnerability found in NVIDIA BMC firmware versions.

Understanding CVE-2022-42273

CVE-2022-42273 is a vulnerability identified in NVIDIA BMC firmware, specifically in the libwebsocket component. This vulnerability could allow an authorized attacker to exploit it, leading to a buffer overflow situation that could result in a denial of service attack or potential code execution.

What is CVE-2022-42273?

NVIDIA BMC firmware versions prior to 00.19.07 are susceptible to a vulnerability in libwebsocket. This flaw could enable an attacker to trigger a buffer overflow, opening avenues for denial of service attacks or unauthorized code execution.

The Impact of CVE-2022-42273

The impact of CVE-2022-42273 includes the risk of code execution and denial of service for systems running affected versions of NVIDIA DGX servers. The severity is rated as High due to the potential consequences.

Technical Details of CVE-2022-42273

The technical details of this vulnerability are crucial to understand in order to mitigate and prevent potential exploitation.

Vulnerability Description

The vulnerability in libwebsocket within NVIDIA BMC firmware versions presents an opportunity for threat actors to orchestrate buffer overflow attacks, compromising the system's integrity and availability.

Affected Systems and Versions

NVIDIA DGX servers using BMC firmware versions prior to 00.19.07 are impacted by this vulnerability, placing them at risk of exploitation.

Exploitation Mechanism

The vulnerability can be exploited by an authorized attacker utilizing malicious inputs to trigger a buffer overflow in the libwebsocket component, potentially leading to code execution or denial of service.

Mitigation and Prevention

Taking immediate action to address CVE-2022-42273 is crucial to safeguard systems from potential threats and attacks.

Immediate Steps to Take

Update NVIDIA DGX servers to BMC firmware version 00.19.07 or above to mitigate the vulnerability.
Implement network security measures to detect and block any malicious attempts targeting the libwebsocket vulnerability.

Long-Term Security Practices

Regularly monitor security advisories from NVIDIA and apply patches promptly to address known vulnerabilities.
Conduct security assessments and penetration testing to identify and remediate potential weaknesses in the system.

Patching and Updates

Stay informed about upcoming firmware updates and security patches released by NVIDIA for BMC firmware to ensure system security is up to date and protected against known vulnerabilities.