In some circumstances, when DNSdist is configured to allow an unlimited number of queries on a single, incoming TCP connection from a client, an attacker can cause a denial of service by crafting a TCP exchange that triggers an exhaustion of the stack and a crash of DNSdist, causing a denial of service.The remedy is: upgrade to the patched 1.9.10 version.A workaround is to restrict the maximum number of queries on incoming TCP connections to a safe value, like 50, via the setMaxTCPQueriesPerConnection setting.We would like to thank Renaud Allard for bringing this issue to our attention.
No PoCs from references.
- https://github.com/ARPSyndicate/cve-scores
- https://github.com/fkie-cad/nvd-json-data-feeds