REDHAT-BUG-2487437: High severity Nlnet Labs ldns vulnerability
NLnet Labs ldns 1.2.0 up to and including versions 1.9.0, when used in applications as (stub) resolver over UDP, lacks matching the query destination address and port with the response source address and port. Furthermore not the query ID, neither the question of the query is matched with that of the response. This makes applications, that use ldns for (stub) resolver functionality over UDP, vulnerable for off-path poisoning attacks. The drill tool, which is shipped with ldns, suffers from this vulnerability.
Affected Software
Event History
Frequently Asked Questions
What is the severity of REDHAT-BUG-2487437?
The severity of REDHAT-BUG-2487437 is rated high with a score of 7.
How do I fix REDHAT-BUG-2487437?
To fix REDHAT-BUG-2487437, update the NLnet Labs ldns to a version above 1.9.0.
What are the risks associated with REDHAT-BUG-2487437?
The risks include potential exploitation of the stub resolver, leading to unauthorized responses or data leakage.
Which software is affected by REDHAT-BUG-2487437?
The affected software is NLnet Labs ldns, specifically versions 1.2.0 through 1.9.0.
What kind of vulnerability is REDHAT-BUG-2487437 categorized as?
REDHAT-BUG-2487437 is categorized as a vulnerability related to improper validation in DNS query and response matching.