CVE-2017-5543 : Security Advisory and Response

A vulnerability in Subrion CMS 4.0.5 allows remote attackers to conduct PHP Object Injection attacks via crafted serialized data in a salt cookie within a login request.

Understanding CVE-2017-5543

This CVE entry describes a security flaw in Subrion CMS 4.0.5 that can be exploited by attackers to inject PHP objects remotely.

What is CVE-2017-5543?

The vulnerability exists in the file includes/classes/ia.core.users.php in Subrion CMS 4.0.5, enabling attackers to inject PHP objects through specially crafted serialized data in a salt cookie within a login request.

The Impact of CVE-2017-5543

The vulnerability exposes the system to remote attacks, potentially leading to unauthorized access and manipulation of data.

Technical Details of CVE-2017-5543

This section provides more technical insights into the CVE.

Vulnerability Description

The flaw in Subrion CMS 4.0.5 allows remote attackers to execute PHP Object Injection attacks by manipulating serialized data in a salt cookie during a login request.

Affected Systems and Versions

Affected Product: Subrion CMS 4.0.5
Vendor: N/A
Affected Version: N/A

Exploitation Mechanism

Attackers can exploit this vulnerability by injecting malicious PHP objects through specifically crafted serialized data in a salt cookie within a login request.

Mitigation and Prevention

Protect your system from CVE-2017-5543 with the following measures:

Immediate Steps to Take

Update Subrion CMS to the latest version.
Monitor and restrict access to sensitive areas of the system.

Long-Term Security Practices

Regularly audit and review code for vulnerabilities.
Educate users on secure login practices and cookie handling.

Patching and Updates

Apply security patches provided by Subrion CMS promptly to address this vulnerability.