CVE-2020-17363 : Security Advisory and Response

USVN (aka User-friendly SVN) before 1.0.9 allows remote code execution via shell metacharacters in the number_start or number_end parameter to LastHundredRequest (aka lasthundredrequestAction) in the Timeline module. This vulnerability may overlap with CVE-2020-25069.

Understanding CVE-2020-17363

USVN (User-friendly SVN) vulnerability allowing remote code execution.

What is CVE-2020-17363?

CVE-2020-17363 is a security vulnerability in USVN (User-friendly SVN) that enables remote code execution through specific parameters in the Timeline module.

The Impact of CVE-2020-17363

The vulnerability allows attackers to execute arbitrary code remotely, potentially leading to unauthorized access, data theft, and system compromise.

Technical Details of CVE-2020-17363

USVN vulnerability details.

Vulnerability Description

Vulnerability Type: Remote Code Execution
Exploitation Vector: Shell Metacharacters in Parameters

Affected Systems and Versions

Product: USVN (User-friendly SVN)
Versions Affected: Before 1.0.9

Exploitation Mechanism

Attackers can exploit the vulnerability by injecting shell metacharacters into the number_start or number_end parameter of LastHundredRequest in the Timeline module.

Mitigation and Prevention

Protecting systems from CVE-2020-17363.

Immediate Steps to Take

Update USVN to version 1.0.9 or newer to mitigate the vulnerability.
Implement input validation to sanitize user inputs and prevent malicious code execution.

Long-Term Security Practices

Regularly monitor and audit system logs for any suspicious activities.
Conduct security assessments and penetration testing to identify and address vulnerabilities proactively.

Patching and Updates

Stay informed about security updates and patches released by USVN.
Apply patches promptly to ensure the system is protected against known vulnerabilities.