CVE-2017-11541 Explained : Impact and Mitigation
Learn about CVE-2017-11541, a heap-based buffer over-read vulnerability in TCPDump version 4.9.0. Find out the impact, affected systems, exploitation details, and mitigation steps to secure your systems.
TCPDump version 4.9.0 is affected by a heap-based buffer over-read vulnerability in the lldp_print function.
Understanding CVE-2017-11541
What is CVE-2017-11541?
The vulnerability in the lldp_print function in print-lldp.c, related to util-print.c, allows for a heap-based buffer over-read in TCPDump version 4.9.0.
The Impact of CVE-2017-11541
This vulnerability could be exploited by an attacker to potentially execute arbitrary code or cause a denial of service by crashing the application.
Technical Details of CVE-2017-11541
Vulnerability Description
The lldp_print function in print-lldp.c in TCPDump version 4.9.0 suffers from a heap-based buffer over-read issue.
Affected Systems and Versions
- Product: Not applicable
- Vendor: Not applicable
- Version: Not applicable
Exploitation Mechanism
The vulnerability can be exploited by crafting a malicious input that triggers the buffer over-read, potentially leading to code execution or a denial of service.
Mitigation and Prevention
Immediate Steps to Take
- Update TCPDump to a non-vulnerable version.
- Implement network segmentation to limit the impact of a potential exploit.
Long-Term Security Practices
- Regularly update software and apply security patches.
- Conduct security assessments and penetration testing to identify vulnerabilities.
Patching and Updates
Ensure that all systems running TCPDump are regularly updated with the latest security patches to mitigate the risk of exploitation.