CVE-2019-13227 : Vulnerability Insights and Analysis

Deepin-clone versions prior to 1.1.3 have a vulnerability that allows symlink attacks, potentially leading to unauthorized file creation or replacement within the file system.

Understanding CVE-2019-13227

When using the GUI mode, deepin-clone versions prior to 1.1.3 generate a log file in the specific directory /tmp/.deepin-clone.log with root privileges. However, this process also allows for the following of symlinks within that location, enabling a symlink attack.

What is CVE-2019-13227?

Deepin-clone before version 1.1.3 creates a log file in /tmp/.deepin-clone.log with root privileges
Symlink vulnerability allows unauthorized users to exploit and manipulate files in the file system
Attackers can create or replace files in any location within the file system
Content within the files is not controlled by the attacker

The Impact of CVE-2019-13227

The vulnerability in deepin-clone versions prior to 1.1.3 can have the following impacts:

Unauthorized users can perform symlink attacks
Potential for creating or overwriting files in the file system
Risk of compromising system integrity and confidentiality

Technical Details of CVE-2019-13227

Deep dive into the technical aspects of the vulnerability

Vulnerability Description

Deepin-clone before version 1.1.3 creates a log file in /tmp/.deepin-clone.log with root privileges
Symlink vulnerability allows unauthorized users to manipulate files in the file system

Affected Systems and Versions

Systems using deepin-clone versions prior to 1.1.3
Version 1.1.3 and above are not affected

Exploitation Mechanism

Attackers exploit the symlink vulnerability in the log file creation process
Unauthorized users can create or replace files in any location within the file system

Mitigation and Prevention

Best practices to mitigate the vulnerability and prevent future occurrences

Immediate Steps to Take

Update deepin-clone to version 1.1.3 or above
Restrict access to sensitive directories
Monitor file system changes for suspicious activities

Long-Term Security Practices

Regularly update software and applications to patch vulnerabilities
Implement least privilege access controls to limit unauthorized actions

Patching and Updates

Apply patches provided by deepin-clone to fix the symlink vulnerability
Stay informed about security advisories and updates from the software vendor