CVE-2019-8376 Explained : Impact and Mitigation
Learn about CVE-2019-8376, a vulnerability in Tcpreplay 4.3.1 that allows attackers to exploit a NULL pointer dereference issue, potentially leading to a Denial of Service (DoS) attack. Find out how to mitigate risks and apply necessary patches.
Tcpreplay 4.3.1 is affected by a vulnerability that allows attackers to exploit a NULL pointer dereference issue in the get_layer4_v6() function, potentially leading to a Denial of Service (DoS) attack.
Understanding CVE-2019-8376
In Tcpreplay 4.3.1, a vulnerability exists in the get_layer4_v6() function, which can be exploited by sending a specially crafted pcap file to the tcpreplay-edit binary.
What is CVE-2019-8376?
This CVE refers to a NULL pointer dereference vulnerability in Tcpreplay 4.3.1, allowing attackers to trigger a DoS condition or potentially cause other unspecified consequences.
The Impact of CVE-2019-8376
The vulnerability could result in a Denial of Service (Segmentation fault) attack or other adverse effects when exploited by sending a malicious pcap file to the affected binary.
Technical Details of CVE-2019-8376
Tcpreplay 4.3.1 is susceptible to a NULL pointer dereference issue in the get_layer4_v6() function.
Vulnerability Description
The vulnerability arises from a NULL pointer dereference in the get_layer4_v6() function in Tcpreplay 4.3.1, triggered by a crafted pcap file.
Affected Systems and Versions
- Product: Not applicable
- Vendor: Not applicable
- Version: Not applicable
Exploitation Mechanism
The vulnerability can be exploited by sending a specifically crafted pcap file to the tcpreplay-edit binary, leading to a Denial of Service (DoS) condition or other potential consequences.
Mitigation and Prevention
It is crucial to take immediate steps to mitigate the risks posed by CVE-2019-8376.
Immediate Steps to Take
- Apply vendor patches or updates promptly.
- Monitor security advisories for any new information.
- Restrict network access to vulnerable systems.
Long-Term Security Practices
- Regularly update and patch software to prevent vulnerabilities.
- Conduct security assessments and penetration testing.
- Implement network segmentation and access controls.
Patching and Updates
Ensure that the latest patches and updates are applied to the affected systems to address the vulnerability and enhance overall security.