CVE-2020-1986 Explained : Impact and Mitigation

This CVE article provides insights into the vulnerability in Secdo software that allows authenticated local users to cause a Windows system crash.

Understanding CVE-2020-1986

This CVE-2020-1986 vulnerability in Secdo for Windows involves improper validation, potentially leading to a system crash.

What is CVE-2020-1986?

CVE-2020-1986 is an improper input validation vulnerability in Secdo software, allowing authenticated local users to crash the system on every login by manipulating the root OS disk (C:).

The Impact of CVE-2020-1986

The vulnerability can have high availability impact, causing a Windows system crash for authenticated local users. However, there is no impact on confidentiality or integrity.

Technical Details of CVE-2020-1986

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

Vulnerability Description

The flaw in Secdo for Windows permits authenticated local users to crash the system by exploiting improper input validation on the OS disk (C:).

Affected Systems and Versions

Affected Platforms: Windows
Affected Product: Secdo
Affected Versions: All versions of Secdo for Windows

Exploitation Mechanism

Attack Complexity: Low
Attack Vector: Local
Privileges Required: Low
User Interaction: None
Scope: Unchanged
Availability Impact: High
Vector String: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

Mitigation and Prevention

Protective measures to mitigate and prevent the exploitation of CVE-2020-1986 are crucial.

Immediate Steps to Take

Create a "C:\proc" folder to prevent unauthorized access
Restrict unprivileged users from accessing critical system folders

Long-Term Security Practices

Regularly review and update access permissions
Educate users on secure data handling practices

Patching and Updates

Since the product is no longer supported, apply the workarounds mentioned and consider replacing the software with supported alternatives.