CVE-2017-5607 : Vulnerability Insights and Analysis

Splunk Enterprise versions 5.0.x through 5.0.18, 6.0.x through 6.0.14, 6.1.x through 6.1.13, 6.2.x through 6.2.13.1, 6.3.x through 6.3.10, 6.4.x through 6.4.6, and 6.5.x through 6.5.3, as well as Splunk Light before version 6.5.2, have a vulnerability that causes the assignment of the $C JS property to the global Window namespace. This could potentially allow unauthorized individuals to extract sensitive information about logged-in usernames and version-related details by exploiting a maliciously crafted webpage.

Understanding CVE-2017-5607

This CVE entry describes a security vulnerability in Splunk Enterprise and Splunk Light that could lead to information leakage.

What is CVE-2017-5607?

CVE-2017-5607 is a vulnerability in Splunk Enterprise and Splunk Light versions that allows unauthorized access to sensitive information through a crafted webpage.

The Impact of CVE-2017-5607

The vulnerability could enable malicious actors to extract confidential data, including usernames and version details, from affected systems.

Technical Details of CVE-2017-5607

This section provides more in-depth technical information about the CVE.

Vulnerability Description

The vulnerability in Splunk Enterprise versions before 6.5.3 and Splunk Light before 6.5.2 allows the $C JS property to be assigned to the global Window namespace, potentially enabling unauthorized data extraction.

Affected Systems and Versions

Splunk Enterprise 5.0.x through 5.0.18
Splunk Enterprise 6.0.x through 6.0.14
Splunk Enterprise 6.1.x through 6.1.13
Splunk Enterprise 6.2.x through 6.2.13.1
Splunk Enterprise 6.3.x through 6.3.10
Splunk Enterprise 6.4.x through 6.4.6
Splunk Enterprise 6.5.x through 6.5.3
Splunk Light before version 6.5.2

Exploitation Mechanism

The vulnerability can be exploited by crafting a malicious webpage to extract sensitive information from logged-in users and system version details.

Mitigation and Prevention

Protecting systems from CVE-2017-5607 requires immediate actions and long-term security practices.

Immediate Steps to Take

Update Splunk Enterprise and Splunk Light to the latest patched versions.
Monitor for any unauthorized access or data extraction activities.

Long-Term Security Practices

Implement strong access controls and authentication mechanisms.
Regularly audit and review system configurations for vulnerabilities.

Patching and Updates

Apply security patches provided by Splunk promptly to address the vulnerability and enhance system security.