CVE-2017-2661 Explained : Impact and Mitigation

ClusterLabs pcs before version 0.9.157 is vulnerable to a cross-site scripting (XSS) attack due to improper validation of the Node name field during the creation of a new cluster or the addition of an existing cluster.

Understanding CVE-2017-2661

This CVE involves a security vulnerability in ClusterLabs pcs that could allow an attacker to execute malicious scripts in the context of a user's session.

What is CVE-2017-2661?

The CVE-2017-2661 vulnerability in ClusterLabs pcs, versions prior to 0.9.157, arises from the lack of proper validation of the Node name field during cluster creation or addition.

The Impact of CVE-2017-2661

This vulnerability could be exploited by an attacker to inject malicious scripts into web pages viewed by users, potentially leading to unauthorized actions or data theft.

Technical Details of CVE-2017-2661

ClusterLabs pcs version 0.9.157 is susceptible to a cross-site scripting vulnerability due to inadequate input validation.

Vulnerability Description

The XSS vulnerability in ClusterLabs pcs allows attackers to inject and execute malicious scripts in the context of a user's web session.

Affected Systems and Versions

Product: pcs
Vendor: ClusterLabs
Vulnerable Version: 0.9.157

Exploitation Mechanism

The vulnerability stems from the inadequate validation of the Node name field during the creation of a new cluster or the addition of an existing cluster.

Mitigation and Prevention

Taking immediate steps and implementing long-term security practices can help mitigate the risks associated with CVE-2017-2661.

Immediate Steps to Take

Update ClusterLabs pcs to version 0.9.157 or later to patch the vulnerability.
Monitor and restrict user input to prevent malicious script injection.

Long-Term Security Practices

Regularly update and patch software to address known vulnerabilities.
Conduct security assessments and audits to identify and remediate potential security weaknesses.

Patching and Updates

Ensure timely installation of security patches and updates for ClusterLabs pcs to protect against known vulnerabilities.