CVE-2017-10874 : Exploit Details and Defense Strategies

Remote attackers can exploit a vulnerability in PWR-Q200 to conduct DNS cache poisoning attacks due to the use of non-random values for source ports of DNS query packets.

Understanding CVE-2017-10874

PWR-Q200 is susceptible to DNS cache poisoning attacks due to insufficiently random values used for source ports in DNS query packets.

What is CVE-2017-10874?

The CVE-2017-10874 vulnerability in PWR-Q200 allows remote attackers to manipulate DNS cache by exploiting the non-random source port values in DNS query packets.

The Impact of CVE-2017-10874

This vulnerability enables attackers to carry out DNS cache poisoning attacks on the affected device, potentially leading to unauthorized DNS resolutions and redirection of network traffic.

Technical Details of CVE-2017-10874

PWR-Q200 vulnerability details and affected systems.

Vulnerability Description

PWR-Q200 uses non-random values for source ports in DNS query packets, facilitating DNS cache poisoning attacks.

Affected Systems and Versions

Product: PWR-Q200
Vendor: NIPPON TELEGRAPH AND TELEPHONE EAST CORPORATION
Versions: All firmware versions

Exploitation Mechanism

Attackers exploit the predictable source port values in DNS query packets to manipulate DNS cache and redirect network traffic.

Mitigation and Prevention

Protecting systems from CVE-2017-10874.

Immediate Steps to Take

Implement firewall rules to restrict unauthorized DNS queries.
Regularly monitor DNS traffic for any suspicious activities.
Apply vendor-supplied patches or updates to mitigate the vulnerability.

Long-Term Security Practices

Enhance network security by using DNSSEC to digitally sign DNS records.
Conduct regular security audits and penetration testing to identify and address vulnerabilities.

Patching and Updates

Stay informed about security advisories from the vendor and apply firmware updates promptly to address the vulnerability.