CVE-2019-8377 : Vulnerability Insights and Analysis
Learn about CVE-2019-8377, a vulnerability in Tcpreplay 4.3.1 that could lead to a Denial of Service or other consequences. Find out how to mitigate this issue and prevent exploitation.
A vulnerability was found in Tcpreplay 4.3.1 that could lead to a NULL pointer dereference, potentially resulting in a Denial of Service (Segmentation fault) or other consequences when exploited.
Understanding CVE-2019-8377
What is CVE-2019-8377?
CVE-2019-8377 is a vulnerability in Tcpreplay 4.3.1 that allows for a NULL pointer dereference in the get_ipv6_l4proto() function, which can be triggered by sending a crafted pcap file to the tcpreplay-edit binary.
The Impact of CVE-2019-8377
This vulnerability could lead to a Denial of Service (Segmentation fault) or potentially cause other undisclosed consequences when exploited.
Technical Details of CVE-2019-8377
Vulnerability Description
An issue was discovered in Tcpreplay 4.3.1 where a NULL pointer dereference occurred in the get_ipv6_l4proto() function, which can be exploited by sending a crafted pcap file to the tcpreplay-edit binary.
Affected Systems and Versions
- Product: Tcpreplay 4.3.1
- Vendor: N/A
- Version: N/A
Exploitation Mechanism
The vulnerability can be exploited by sending a carefully crafted pcap file to the tcpreplay-edit binary, triggering the NULL pointer dereference.
Mitigation and Prevention
Immediate Steps to Take
- Apply the latest patches and updates provided by the vendor.
- Avoid opening untrusted pcap files with the tcpreplay-edit binary.
Long-Term Security Practices
- Regularly update and patch software to address known vulnerabilities.
- Implement network segmentation and access controls to limit exposure to potential attacks.
Patching and Updates
Ensure that Tcpreplay is updated to the latest version to mitigate the vulnerability.