DNS Resolver Vulnerability in D-Link DSL 2730-U and DIR-600M Devices
CVE-2020-13960

7.5HIGH

Key Information:

Vendor

D-Link
Status
Dsl-2730u Firmware
Vendor
CVE Published:
8 June 2020

What is CVE-2020-13960?

D-Link DSL 2730-U and DIR-600M devices are affected by a DNS resolver vulnerability that allows remote attackers to exploit the default DNS settings. Specifically, the presence of the domain.name string in the DNS search path enables attackers to return valid DNS responses for generally unreachable subdomains, effectively bypassing NXDOMAIN errors. This can lead to potential unauthorized access to services and exposure of sensitive information, highlighting the need for users to secure their devices by adjusting the DNS resolver settings.

References

https://harigovind.org/articles/who-is-hijacking-my-nxdom...
x_refsource_MISC

CVSS V3.1

Score:
7.5
Severity:
HIGH
Confidentiality:
None
Integrity:
High
Availability:
None
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
None
User Interaction:
None
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

.
CVE-2020-13960 : DNS Resolver Vulnerability in D-Link DSL 2730-U and DIR-600M Devices