CVE-2017-8760 : What You Need to Know

Accellion FTA devices prior to FTA_9_12_180 are vulnerable to XSS (cross-site scripting) attacks. The vulnerability exists in courier/1000@/index.html involving the auth_params parameter. Although the devices utilize internal WAF filters to mitigate XSS vulnerabilities, these filters can be bypassed by modifying payloads, such as through URL encoding.

Understanding CVE-2017-8760

This CVE identifies a security issue in Accellion FTA devices that could allow attackers to execute XSS attacks.

What is CVE-2017-8760?

CVE-2017-8760 is a vulnerability found in Accellion FTA devices before version FTA_9_12_180, enabling XSS attacks through the auth_params parameter.

The Impact of CVE-2017-8760

The vulnerability could be exploited by attackers to execute malicious scripts on the affected devices, potentially leading to unauthorized access or data theft.

Technical Details of CVE-2017-8760

Accellion FTA devices are susceptible to XSS attacks due to the following:

Vulnerability Description

XSS vulnerability in courier/1000@/index.html with the auth_params parameter
Internal WAF filters used for mitigation
Bypassing filters through payload modifications like URL encoding

Affected Systems and Versions

Accellion FTA devices before version FTA_9_12_180

Exploitation Mechanism

Attackers can exploit the XSS vulnerability by manipulating the auth_params parameter and evading the internal WAF filters.

Mitigation and Prevention

To address CVE-2017-8760, consider the following steps:

Immediate Steps to Take

Update Accellion FTA devices to version FTA_9_12_180 or later
Monitor and restrict access to vulnerable components

Long-Term Security Practices

Regularly scan and patch systems for known vulnerabilities
Implement secure coding practices to prevent XSS attacks

Patching and Updates

Apply security patches provided by Accellion promptly to mitigate the vulnerability