CVE-2017-13027 : Vulnerability Insights and Analysis

In tcpdump versions prior to 4.9.2, a buffer over-read vulnerability was discovered in the LLDP parser. This vulnerability is specifically located in the print-lldp.c:lldp_mgmt_addr_tlv_print() function.

Understanding CVE-2017-13027

This CVE entry pertains to a buffer over-read vulnerability in the LLDP parser of tcpdump versions before 4.9.2.

What is CVE-2017-13027?

The vulnerability identified in CVE-2017-13027 is a buffer over-read issue found in the print-lldp.c:lldp_mgmt_addr_tlv_print() function within tcpdump versions prior to 4.9.2.

The Impact of CVE-2017-13027

The vulnerability could potentially allow an attacker to exploit the buffer over-read issue, leading to information disclosure or a denial of service (DoS) condition.

Technical Details of CVE-2017-13027

This section provides more in-depth technical details regarding CVE-2017-13027.

Vulnerability Description

The LLDP parser in tcpdump versions before 4.9.2 is susceptible to a buffer over-read vulnerability in the print-lldp.c:lldp_mgmt_addr_tlv_print() function.

Affected Systems and Versions

Product: Not applicable
Vendor: Not applicable
Versions affected: All versions prior to 4.9.2

Exploitation Mechanism

The vulnerability can be exploited by crafting a malicious LLDP packet to trigger the buffer over-read in the affected function.

Mitigation and Prevention

To address CVE-2017-13027 and enhance overall security, consider the following mitigation strategies:

Immediate Steps to Take

Update tcpdump to version 4.9.2 or later to mitigate the vulnerability.
Monitor vendor security advisories for patches and updates.

Long-Term Security Practices

Regularly update software and systems to the latest versions.
Implement network segmentation to minimize the impact of potential attacks.

Patching and Updates

Apply patches provided by the vendor promptly to address security vulnerabilities and enhance system security.