CVE-2023-41327 : Vulnerability Insights and Analysis
Discover details about CVE-2023-41327 affecting WireMock tool, allowing SSRF via webhooks. Learn impact, affected versions & steps for mitigation.
This article provides detailed information on CVE-2023-41327, a vulnerability related to Controlled SSRF through URL in the WireMock tool.
Understanding CVE-2023-41327
This section discusses the specifics of the vulnerability and its potential impact.
What is CVE-2023-41327?
CVE-2023-41327 involves Controlled SSRF through URL in the WireMock tool, affecting versions up to 3.0.0-beta-15. It allows attackers to forward POST requests from a webhook to arbitrary services reachable from WireMock's instance.
The Impact of CVE-2023-41327
This vulnerability could lead to unauthorized access to internal APIs, potentially compromising sensitive data or services hosted within private clusters.
Technical Details of CVE-2023-41327
This section provides a deeper dive into the vulnerability, affected systems, and the exploitation mechanism.
Vulnerability Description
WireMock's Webhooks Extension prior to version 3.0.0-beta-15 did not properly filter target addresses, exposing users to SSRF attacks through webhook configurations.
Affected Systems and Versions
- WireMock Webhooks Extension: >= 2.0.0, < 2.35.1
- WireMock Webhooks Extension: >= 3.0.0, < 3.0.3
- WireMock Studio: All versions
Exploitation Mechanism
Attackers could exploit this vulnerability by using specially crafted POST requests via webhooks to initiate unauthorized communication with internal or external services.
Mitigation and Prevention
This section outlines steps to mitigate the vulnerability and prevent exploitation.
Immediate Steps to Take
- Update WireMock to version 2.35.1 or 3.0.3 to patch the vulnerability.
- Implement external firewall rules to restrict access to permitted destinations if upgrading is not possible.
Long-Term Security Practices
Regularly monitor and update software dependencies to stay protected against known vulnerabilities.
Patching and Updates
Stay informed about security advisories and promptly apply patches provided by the WireMock team to ensure the latest security enhancements are in place.