CVE-2019-13608 : Security Advisory and Response

Citrix StoreFront Server versions prior to 1903, 7.15 LTSR versions earlier than CU4 (3.12.4000), and 7.6 LTSR versions earlier than CU8 (3.0.8000) are vulnerable to XXE attacks.

Understanding CVE-2019-13608

This CVE identifies the susceptibility of Citrix StoreFront Server to XML External Entity (XXE) attacks.

What is CVE-2019-13608?

XXE attacks can be performed on Citrix StoreFront Server versions prior to 1903, as well as on 7.15 LTSR versions earlier than CU4 (3.12.4000), and 7.6 LTSR versions earlier than CU8 (3.0.8000).

The Impact of CVE-2019-13608

XXE attacks can lead to unauthorized access to sensitive data.
Attackers can exploit this vulnerability to retrieve files, perform SSRF attacks, or cause a DoS condition.

Technical Details of CVE-2019-13608

Citrix StoreFront Server versions are affected by XXE vulnerabilities.

Vulnerability Description

Citrix StoreFront Server before 1903, 7.15 LTSR before CU4 (3.12.4000), and 7.6 LTSR before CU8 (3.0.8000) are susceptible to XXE attacks.

Affected Systems and Versions

Citrix StoreFront Server versions prior to 1903
Citrix 7.15 LTSR versions earlier than CU4 (3.12.4000)
Citrix 7.6 LTSR versions earlier than CU8 (3.0.8000)

Exploitation Mechanism

Attackers can exploit XML External Entity vulnerabilities to access unauthorized data and execute malicious actions.

Mitigation and Prevention

It is crucial to take immediate steps to secure systems and prevent exploitation of CVE-2019-13608.

Immediate Steps to Take

Apply patches provided by Citrix to mitigate the XXE vulnerability.
Monitor network traffic for any suspicious activities.
Implement strict access controls to limit exposure to sensitive data.

Long-Term Security Practices

Regularly update and patch Citrix StoreFront Server to address security vulnerabilities.
Conduct security assessments and penetration testing to identify and remediate potential risks.

Patching and Updates

Stay informed about security advisories from Citrix and promptly apply recommended patches to protect systems from XXE attacks.