CVE-2020-10252 : Vulnerability Insights and Analysis

An issue was discovered in ownCloud before 10.4 that allows an authenticated attacker to interact with local services blindly or conduct a Denial Of Service attack through an SSRF vulnerability.

Understanding CVE-2020-10252

What is CVE-2020-10252?

This CVE refers to a Blind SSRF vulnerability in ownCloud before version 10.4, enabling an attacker to manipulate local services or launch a DoS attack.

The Impact of CVE-2020-10252

The vulnerability allows an authenticated attacker to exploit SSRF to interact with local services without detection or disrupt services through a DoS attack.

Technical Details of CVE-2020-10252

Vulnerability Description

The flaw in ownCloud before 10.4 permits an attacker to abuse the apps/files_sharing/external remote parameter, leading to Blind SSRF or DoS attacks.

Affected Systems and Versions

Product: ownCloud
Vendor: ownCloud
Versions affected: All versions before 10.4

Exploitation Mechanism

The attacker, authenticated within ownCloud, can exploit the SSRF vulnerability via the apps/files_sharing/external remote parameter to manipulate local services or launch a DoS attack.

Mitigation and Prevention

Immediate Steps to Take

Upgrade ownCloud to version 10.4 or later to mitigate the vulnerability.
Monitor network traffic for any suspicious activity that could indicate SSRF attacks.

Long-Term Security Practices

Implement strict input validation to prevent SSRF vulnerabilities.
Regularly update and patch ownCloud to address security issues.

Patching and Updates

Apply security patches provided by ownCloud to fix the SSRF vulnerability and enhance overall system security.