CVE-2018-18407 : Vulnerability Insights and Analysis
Learn about CVE-2018-18407, a vulnerability in Tcpreplay 4.3.0 beta1 that allows attackers to trigger a denial of service through a heap-based buffer over-read issue. Find mitigation steps and long-term security practices here.
Tcpreplay 4.3.0 beta1 was found to have a vulnerability related to heap-based buffer over-read in the tcpreplay-edit binary, leading to a denial of service.
Understanding CVE-2018-18407
This CVE involves a heap-based buffer over-read in Tcpreplay 4.3.0 beta1, affecting the tcpreplay-edit binary during an incremental checksum operation.
What is CVE-2018-18407?
- The vulnerability is triggered in the csum_replace4() function in incremental_checksum.h
- It allows an attacker to cause a denial of service by exploiting the heap-based buffer over-read issue.
The Impact of CVE-2018-18407
- Attackers can exploit this vulnerability to disrupt services and potentially cause system crashes.
Technical Details of CVE-2018-18407
This section provides more in-depth technical information about the CVE.
Vulnerability Description
- Tcpreplay 4.3.0 beta1 is susceptible to a heap-based buffer over-read in the tcpreplay-edit binary.
Affected Systems and Versions
- Product: n/a
- Vendor: n/a
- Version: n/a
Exploitation Mechanism
- The issue arises during an incremental checksum operation in the csum_replace4() function.
Mitigation and Prevention
Protecting systems from CVE-2018-18407 requires immediate action and long-term security measures.
Immediate Steps to Take
- Update Tcpreplay to a patched version or apply vendor-supplied fixes.
- Monitor network traffic for any suspicious activity.
Long-Term Security Practices
- Regularly update software and apply security patches promptly.
- Implement network segmentation to contain potential attacks.
Patching and Updates
- Stay informed about security advisories and updates from Tcpreplay and relevant vendors.