CVE-2019-7617 : Vulnerability Insights and Analysis

An issue arises in the Elastic APM agent for Python versions prior to 5.1.0 when executed as a CGI script, allowing attackers to manipulate proxy headers.

Understanding CVE-2019-7617

This CVE involves a vulnerability in the Elastic APM agent for Python that could be exploited by attackers to redirect APM data.

What is CVE-2019-7617?

When the Elastic APM agent for Python versions before 5.1.0 is run as a CGI script, a flaw allows remote attackers to control the proxy header, potentially redirecting collected APM data.

The Impact of CVE-2019-7617

The vulnerability could lead to a collision of variable names, enabling attackers to divert APM data to a proxy server under their control.

Technical Details of CVE-2019-7617

This section provides more in-depth technical insights into the CVE.

Vulnerability Description

Type: Improper Input Validation (CWE-20)
Flaw: Variable name clash when attacker manipulates proxy header

Affected Systems and Versions

Product: Elastic APM agent for Python
Vendor: Elastic
Versions Affected: Before 5.1.0

Exploitation Mechanism

Attackers exploit the ability to manipulate proxy headers
Redirect APM data to a proxy server they control

Mitigation and Prevention

Protect your systems from CVE-2019-7617 with the following steps:

Immediate Steps to Take

Upgrade Elastic APM agent for Python to version 5.1.0 or newer
Implement network controls to restrict access to the agent

Long-Term Security Practices

Regularly monitor and audit proxy headers for anomalies
Train staff on identifying and responding to potential attacks

Patching and Updates

Stay informed about security updates from Elastic
Apply patches promptly to mitigate known vulnerabilities