CVE-2025-30193
Severity CVSS v4.0:
Pending analysis
Type:
Unavailable / Other
Publication date:
20/05/2025
Last modified:
21/05/2025
Description
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.<br />
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The remedy is: upgrade to the patched 1.9.10 version.<br />
<br />
A workaround is to restrict the maximum number of queries on incoming TCP connections to a safe value, like 50, via the setMaxTCPQueriesPerConnection setting.<br />
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We would like to thank Renaud Allard for bringing this issue to our attention.
Impact
Base Score 3.x
7.50
Severity 3.x
HIGH