CVE-2017-13005 : What You Need to Know

A buffer over-read vulnerability was discovered in the xid_map_enter function of print-nfs.c in tcpdump prior to version 4.9.2, affecting the NFS parser.

Understanding CVE-2017-13005

This CVE entry describes a specific vulnerability in tcpdump that could be exploited by attackers.

What is CVE-2017-13005?

The CVE-2017-13005 vulnerability is a buffer over-read issue found in the xid_map_enter function of print-nfs.c in tcpdump versions prior to 4.9.2. This vulnerability impacts the NFS parser.

The Impact of CVE-2017-13005

The vulnerability could allow remote attackers to cause a denial of service (DoS) or potentially execute arbitrary code on the target system by sending specially crafted network packets.

Technical Details of CVE-2017-13005

This section provides more in-depth technical details about the CVE-2017-13005 vulnerability.

Vulnerability Description

The NFS parser in tcpdump before version 4.9.2 has a buffer over-read in print-nfs.c:xid_map_enter().

Affected Systems and Versions

Affected System: tcpdump
Affected Versions: Versions prior to 4.9.2

Exploitation Mechanism

The vulnerability can be exploited by sending maliciously crafted network packets to the target system, triggering the buffer over-read in the NFS parser.

Mitigation and Prevention

To protect systems from CVE-2017-13005, follow these mitigation strategies:

Immediate Steps to Take

Update tcpdump to version 4.9.2 or later to mitigate the vulnerability.
Implement network segmentation to minimize the impact of potential attacks.

Long-Term Security Practices

Regularly monitor and patch software to address known vulnerabilities.
Conduct security assessments and penetration testing to identify and remediate weaknesses.

Patching and Updates

Apply security patches provided by the software vendor promptly to address vulnerabilities like CVE-2017-13005.