CVE-2020-9331 Explained : Impact and Mitigation

CryptoPro CSP through 5.0.0.10004 on 32-bit platforms allows Local Privilege Escalation due to mishandling of user-mode input during process creation, enabling attackers to write arbitrary data to the kernel's address space.

Understanding CVE-2020-9331

What is CVE-2020-9331?

CryptoPro CSP through version 5.0.0.10004 on 32-bit platforms is vulnerable to Local Privilege Escalation, potentially exploited by local users with specific privileges.

The Impact of CVE-2020-9331

The vulnerability allows attackers to escalate their privileges locally, compromising the security of the system and potentially gaining unauthorized access to sensitive data.

Technical Details of CVE-2020-9331

Vulnerability Description

CryptoPro CSP through version 5.0.0.10004 on 32-bit platforms mishandles user-mode input during process creation.
This flaw enables an attacker to write arbitrary data to a specific location in the kernel's address space.

Affected Systems and Versions

Product: CryptoPro CSP
Vendor: N/A
Versions: Up to 5.0.0.10004

Exploitation Mechanism

Local users with the SeChangeNotifyPrivilege right can exploit this vulnerability by manipulating user-mode input during process creation.

Mitigation and Prevention

Immediate Steps to Take

Apply security patches or updates provided by the vendor promptly.
Restrict user privileges to minimize the impact of potential privilege escalation attacks.

Long-Term Security Practices

Regularly monitor and audit system activity to detect any unauthorized changes or suspicious behavior.
Educate users on best security practices and the importance of reporting any unusual system behavior.

Patching and Updates

Stay informed about security advisories and updates from CryptoPro CSP to address known vulnerabilities and enhance system security.