Source: dnsdist Version: 1.9.9-1 Severity: grave Tags: security upstream Justification: user security hole Forwarded: https://github.com/PowerDNS/pdns/pull/15572 X-Debbugs-Cc: car...@debian.org, Debian Security Team <t...@security.debian.org>
Hi, The following vulnerability was published for dnsdist. CVE-2025-30193[0]: | 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. If you fix the vulnerability please also make sure to include the CVE (Common Vulnerabilities & Exposures) id in your changelog entry. For further information see: [0] https://security-tracker.debian.org/tracker/CVE-2025-30193 https://www.cve.org/CVERecord?id=CVE-2025-30193 [1] https://www.dnsdist.org/security-advisories/powerdns-advisory-for-dnsdist-2025-03.html [2] https://github.com/PowerDNS/pdns/pull/15572 Please adjust the affected versions in the BTS as needed. Regards, Salvatore
