CVE-2020-8634 : Exploit Details and Defense Strategies

Wing FTP Server v6.2.3 for Linux, macOS, and Solaris sets insecure permissions on files modified within the HTTP file management interface, potentially leading to privilege escalation.

Understanding CVE-2020-8634

This CVE involves insecure file permissions set by Wing FTP Server v6.2.3, which could allow low-privilege users to escalate their privileges.

What is CVE-2020-8634?

The vulnerability in Wing FTP Server v6.2.3 for Linux, macOS, and Solaris allows files modified via the HTTP file management interface to be saved with world-readable and world-writable permissions, enabling potential privilege escalation.

The Impact of CVE-2020-8634

The insecure file permissions could lead to unauthorized access and privilege escalation, potentially allowing low-privilege users to gain root access by editing sensitive system files.

Technical Details of CVE-2020-8634

Wing FTP Server v6.2.3 vulnerability details and affected systems.

Vulnerability Description

Wing FTP Server v6.2.3 sets insecure permissions on files modified through the HTTP file management interface.

Affected Systems and Versions

Product: Wing FTP Server v6.2.3
Operating Systems: Linux, macOS, Solaris
Versions: Not specified

Exploitation Mechanism

Low-privilege users can exploit the vulnerability by editing files within the HTTP file management interface to escalate their privileges.

Mitigation and Prevention

Steps to mitigate and prevent the CVE-2020-8634 vulnerability.

Immediate Steps to Take

Apply vendor-supplied patches or updates promptly.
Restrict access to the HTTP file management interface.
Monitor file permissions and access logs for suspicious activities.

Long-Term Security Practices

Regularly update and patch Wing FTP Server and related software.
Implement the principle of least privilege to restrict user access.

Patching and Updates

Check for security advisories from the vendor and apply patches as soon as they are available.