CVE-2017-17520 : What You Need to Know
Learn about CVE-2017-17520, a vulnerability in TIN 2.4.1's url_handler.pl script that allows remote attackers to conduct argument-injection attacks via crafted URLs. Find mitigation steps and prevention measures here.
This CVE involves a vulnerability in the TIN 2.4.1 tool, specifically in the url_handler.pl script, which lacks string validation before executing a program specified by the BROWSER environment variable. Remote attackers could potentially exploit this flaw to conduct argument-injection attacks using a manipulated URL.
Understanding CVE-2017-17520
The vulnerability in the url_handler.pl script of TIN 2.4.1 allows for potential argument-injection attacks through crafted URLs.
What is CVE-2017-17520?
The TIN 2.4.1 tool's url_handler.pl script lacks string validation before executing a program specified by the BROWSER environment variable, potentially enabling remote attackers to carry out argument-injection attacks.
The Impact of CVE-2017-17520
This vulnerability could allow remote attackers to manipulate URLs and execute arbitrary commands, posing a risk of unauthorized access and potential system compromise.
Technical Details of CVE-2017-17520
The technical aspects of the vulnerability in TIN 2.4.1's url_handler.pl script.
Vulnerability Description
The url_handler.pl script in TIN 2.4.1 does not validate strings before launching the program specified by the BROWSER environment variable, opening the door for argument-injection attacks via crafted URLs.
Affected Systems and Versions
- Product: TIN 2.4.1
- Vendor: N/A
- Version: N/A
Exploitation Mechanism
Remote attackers can exploit this vulnerability by manipulating URLs to inject malicious arguments and potentially execute unauthorized commands.
Mitigation and Prevention
Steps to mitigate and prevent exploitation of CVE-2017-17520.
Immediate Steps to Take
- Disable or restrict the use of the url_handler.pl script in TIN 2.4.1 if not essential for operations.
- Implement input validation mechanisms to ensure that only safe and expected inputs are processed.
Long-Term Security Practices
- Regularly monitor and update the TIN tool and associated scripts to address security vulnerabilities promptly.
- Educate users on safe URL handling practices to minimize the risk of exploitation.
Patching and Updates
- Check for patches or updates from the TIN tool vendor to address the vulnerability in the url_handler.pl script.