CVE-2017-12987 : Vulnerability Insights and Analysis
Learn about CVE-2017-12987, a buffer over-read vulnerability in the IEEE 802.11 parser of tcpdump versions prior to 4.9.2. Find out the impact, affected systems, exploitation method, and mitigation steps.
A buffer over-read vulnerability was found in the IEEE 802.11 parser in tcpdump versions prior to 4.9.2, specifically in the parse_elements() function of the print-802_11.c file.
Understanding CVE-2017-12987
What is CVE-2017-12987?
The CVE-2017-12987 vulnerability is a buffer over-read issue in the IEEE 802.11 parser in tcpdump versions before 4.9.2.
The Impact of CVE-2017-12987
This vulnerability could allow an attacker to exploit the buffer over-read issue, potentially leading to information disclosure or denial of service.
Technical Details of CVE-2017-12987
Vulnerability Description
The buffer over-read vulnerability exists in the parse_elements() function of the print-802_11.c file in tcpdump versions prior to 4.9.2.
Affected Systems and Versions
- Affected System: IEEE 802.11 parser in tcpdump
- Affected Versions: Versions prior to 4.9.2
Exploitation Mechanism
The vulnerability can be exploited by an attacker sending specially crafted network packets to the affected system, triggering the buffer over-read in the parse_elements() function.
Mitigation and Prevention
Immediate Steps to Take
- Update tcpdump to version 4.9.2 or later to mitigate the vulnerability.
- Monitor network traffic for any suspicious activity that could indicate exploitation attempts.
Long-Term Security Practices
- Regularly update software and firmware to patch known vulnerabilities.
- Implement network segmentation and access controls to limit the impact of potential attacks.
Patching and Updates
- Apply security patches provided by tcpdump to address the buffer over-read vulnerability.