CVE-2019-1794 : Exploit Details and Defense Strategies
Learn about CVE-2019-1794, a vulnerability in Cisco Directory Connector allowing attackers to manipulate search paths. Find mitigation steps and long-term security practices here.
Cisco Directory Connector Search Order Hijacking Vulnerability
Understanding CVE-2019-1794
This CVE involves a security weakness in Cisco Directory Connector that allows a logged-in attacker to manipulate the search path to load a preferred binary.
What is CVE-2019-1794?
The vulnerability arises from unregulated search path elements, enabling an attacker to place their binary strategically in the search path used by Cisco Directory Connector.
The Impact of CVE-2019-1794
The vulnerability has a CVSS base score of 5.1, with medium severity. It can lead to high integrity impact and low confidentiality impact.
Technical Details of CVE-2019-1794
Vulnerability Description
- Cisco Directory Connector vulnerability allows an attacker to load a chosen binary by manipulating the search path.
Affected Systems and Versions
- Product: Cisco Directory Connector
- Vendor: Cisco
- Version: 2.2
Exploitation Mechanism
- Attacker strategically places their binary in the search path to exploit the vulnerability.
Mitigation and Prevention
Immediate Steps to Take
- Verify SafeDLLSearchMode is enabled in the Windows Registry to load DLLs from system locations first.
- Follow the outlined process in the Deployment Guide for Cisco Directory Connector.
Long-Term Security Practices
- Avoid modifying the system registry unless necessary to prevent potential issues.
Patching and Updates
- Stay informed about security advisories and updates from Cisco to address vulnerabilities promptly.