CVE-2020-25845 : What You Need to Know

NHIServiSignAdapter by CHANGING Inc. for Windows is affected by an information leakage vulnerability that could lead to the exposure of user credentials.

Understanding CVE-2020-25845

This CVE involves a failure in verifying user file paths, allowing malicious redirection of SMB requests and subsequent credential leakage.

What is CVE-2020-25845?

The vulnerability in NHIServiSignAdapter for Windows enables attackers to redirect SMB requests to a malicious host, leading to the disclosure of user credentials.

The Impact of CVE-2020-25845

The exploitation of this vulnerability can result in high confidentiality impact as user credentials are exposed to unauthorized parties.

Technical Details of CVE-2020-25845

NHIServiSignAdapter version 1.0.20.0218 for Windows is affected by this information leakage vulnerability.

Vulnerability Description

Multiple functions in NHIServiSignAdapter fail to validate user file paths, allowing for the redirection of SMB requests to a malicious host, leading to credential leakage.

Affected Systems and Versions

Affected Platform: Windows
Affected Product: NHIServiSignAdapter
Affected Version: 1.0.20.0218

Exploitation Mechanism

The vulnerability is exploited by manipulating user file paths to redirect SMB requests to a malicious host, facilitating the leakage of user credentials.

Mitigation and Prevention

To address CVE-2020-25845, immediate actions and long-term security practices are recommended.

Immediate Steps to Take

Update NHIServiSignAdapter to version 1.0.20.1109 to mitigate the vulnerability.

Long-Term Security Practices

Regularly monitor and audit file path validations in applications to prevent similar vulnerabilities.
Implement network segmentation to limit the impact of potential credential leaks.

Patching and Updates

Apply security patches and updates promptly to ensure the protection of systems and data.