CVE-2017-16664 : Exploit Details and Defense Strategies
Learn about CVE-2017-16664, a code injection vulnerability in Open Ticket Request System (OTRS) versions 5, 4, and 3.3. Understand the impact, affected systems, exploitation, and mitigation steps.
An instance of code injection has been identified in Kernel/System/Spelling.pm in Open Ticket Request System (OTRS) versions 5 before 5.0.24, 4 before 4.0.26, and 3.3 before 3.3.20. Through URL manipulation, an authenticated remote attacker can exploit this vulnerability to execute shell commands as the webserver user in the agent interface.
Understanding CVE-2017-16664
This CVE involves a code injection vulnerability in OTRS versions that allows an authenticated remote attacker to execute shell commands.
What is CVE-2017-16664?
CVE-2017-16664 is a code injection vulnerability found in OTRS versions 5 before 5.0.24, 4 before 4.0.26, and 3.3 before 3.3.20, specifically in Kernel/System/Spelling.pm. By manipulating URLs, a remote attacker can run shell commands as the webserver user.
The Impact of CVE-2017-16664
The vulnerability enables attackers to execute arbitrary shell commands within the context of the webserver user, potentially leading to unauthorized access and further exploitation of the system.
Technical Details of CVE-2017-16664
This section provides more in-depth technical information about the CVE.
Vulnerability Description
The code injection vulnerability in Kernel/System/Spelling.pm in OTRS versions allows authenticated remote attackers to execute shell commands via URL manipulation.
Affected Systems and Versions
- OTRS versions 5 before 5.0.24
- OTRS versions 4 before 4.0.26
- OTRS versions 3.3 before 3.3.20
Exploitation Mechanism
By manipulating URLs, authenticated remote attackers can inject and execute shell commands within the agent interface, posing a significant security risk.
Mitigation and Prevention
To address CVE-2017-16664, follow these mitigation strategies:
Immediate Steps to Take
- Update OTRS to version 5.0.24, 4.0.26, or 3.3.20, which contain patches for the vulnerability.
- Monitor and restrict access to the OTRS system to authorized personnel only.
Long-Term Security Practices
- Implement regular security audits and penetration testing to identify and address vulnerabilities promptly.
- Educate users on safe URL handling practices to prevent injection attacks.
Patching and Updates
- Regularly apply security patches and updates provided by OTRS to ensure the system is protected against known vulnerabilities.