CVE-2019-6157 : Vulnerability Insights and Analysis

A vulnerability in various firmware versions of Lenovo System x exposes the web server's private key in the generated log file for support.

Understanding CVE-2019-6157

This CVE involves an information disclosure issue in Lenovo System x firmware versions, potentially compromising the security of the web server's private key.

What is CVE-2019-6157?

In Lenovo System x firmware versions, the first failure data capture (FFDC) of the integrated management module II (IMM2) inadvertently includes the private key of the web server in the support log file.

The Impact of CVE-2019-6157

The vulnerability poses a medium-severity risk with high confidentiality and integrity impacts, requiring high privileges for exploitation but no user interaction. The attack complexity is low, and the attack vector is through the network.

Technical Details of CVE-2019-6157

This section delves into the specific technical aspects of the CVE.

Vulnerability Description

The vulnerability exposes the private key of the web server in the FFDC log file of Lenovo System x firmware versions, potentially leading to unauthorized access to sensitive information.

Affected Systems and Versions

Affected Product: System x
Vendor: Lenovo
Affected Versions: Various

Exploitation Mechanism

The vulnerability can be exploited by an attacker with high privileges who can access the support log file containing the private key of the web server.

Mitigation and Prevention

Protecting systems from CVE-2019-6157 requires immediate actions and long-term security practices.

Immediate Steps to Take

Update to the latest firmware version that addresses the vulnerability.
Restrict access to the support log files containing sensitive information.

Long-Term Security Practices

Regularly monitor and audit log files for any unauthorized access or disclosure of sensitive data.
Implement strong access controls and encryption mechanisms to safeguard private keys and sensitive information.

Patching and Updates

Apply patches provided by Lenovo to fix the vulnerability and prevent potential exploitation.