{"id":"CVE-2025-30194","aliases":["ALPINE-CVE-2025-30194","DEBIAN-CVE-2025-30194","EUVD-2025-14811","GHSA-487w-xx5j-gqwc","SUSE-SU-2025:01743-1","UBUNTU-CVE-2025-30194","openSUSE-SU-2025:15157-1"],"status":"published","title":"Denial of service via crafted DoH exchange","description":"When DNSdist is configured to provide DoH via the nghttp2 provider, an attacker can cause a denial of service by crafting a DoH exchange that triggers an illegal memory access (double-free) and crash of DNSdist, causing a denial of service.\n\nThe remedy is: upgrade to the patched 1.9.9 version.\n\nA workaround is to temporarily switch to the h2o provider until DNSdist has been upgraded to a fixed version.\n\nWe would like to thank Charles Howes for bringing this issue to our attention.","severity":{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"high","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-12","score":0.02289,"percentile":0.83454,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":true},"cwes":["CWE-416"],"published":"2025-04-29T11:25:47Z","modified":"2026-11-03T06:32:14Z","fixes":[{"ecosystem":"Alpine:v3.21","package":"dnsdist","fixed_in":["1.9.9-r0"],"sources":["osv"]},{"ecosystem":"Alpine:v3.22","package":"dnsdist","fixed_in":["1.9.9-r0"],"sources":["osv"]},{"ecosystem":"Alpine:v3.23","package":"dnsdist","fixed_in":["1.9.9-r0"],"sources":["osv"]},{"ecosystem":"Alpine:v3.24","package":"dnsdist","fixed_in":["1.9.9-r0"],"sources":["osv"]},{"ecosystem":"Debian:13","package":"dnsdist","fixed_in":["1.9.9-1"],"sources":["osv"]},{"ecosystem":"Debian:14","package":"dnsdist","fixed_in":["1.9.9-1"],"sources":["osv"]},{"ecosystem":"openSUSE:Tumbleweed","package":"dnsdist","fixed_in":["1.9.10-2.1"],"sources":["osv"]}],"affected":[{"source":"osv","ecosystem":"Alpine:v3.21","package":"dnsdist","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1.9.9-r0"}]}]},{"source":"osv","ecosystem":"Alpine:v3.22","package":"dnsdist","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1.9.9-r0"}]}]},{"source":"osv","ecosystem":"Alpine:v3.23","package":"dnsdist","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1.9.9-r0"}]}]},{"source":"osv","ecosystem":"Alpine:v3.24","package":"dnsdist","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1.9.9-r0"}]}]},{"source":"osv","ecosystem":"Debian:13","package":"dnsdist","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1.9.9-1"}]}]},{"source":"osv","ecosystem":"Debian:14","package":"dnsdist","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1.9.9-1"}]}]},{"source":"osv","ecosystem":"SUSE:Linux Enterprise Module for Basesystem 15 SP7","package":"dnsdist","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1.9.10-150700.3.3.1"}]}],"bundled":2},{"source":"osv","ecosystem":"openSUSE:Tumbleweed","package":"dnsdist","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1.9.10-2.1"}]}]}],"products":[{"vendor":"powerdns","product":"dnsdist"}],"references":[{"url":"https://dnsdist.org/security-advisories/powerdns-advisory-for-dnsdist-2025-02.html","tags":["advisory","report"]},{"url":"http://www.openwall.com/lists/oss-security/2025/04/29/1","tags":["web","report"]},{"url":"https://www.vicarius.io/vsociety/posts/cve-2025-30194-detection-dnsdist-vulnerability","tags":["web"]},{"url":"https://www.vicarius.io/vsociety/posts/cve-2025-30194-mitigate-dnsdist-vulnerability","tags":["web"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2025-30194","tags":["advisory"]},{"url":"https://github.com/advisories/GHSA-487w-xx5j-gqwc"},{"url":"https://security.alpinelinux.org/vuln/CVE-2025-30194","tags":["advisory"]},{"url":"https://repo.powerdns.com/","tags":["web"]},{"url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2025/30xxx/CVE-2025-30194.json","tags":["advisory"]},{"url":"https://github.com/PowerDNS/pdns","tags":["package"]},{"url":"https://security-tracker.debian.org/tracker/CVE-2025-30194","tags":["advisory"]},{"url":"https://www.suse.com/support/update/announcement/2025/suse-su-202501743-1/","tags":["advisory"]},{"url":"https://bugzilla.suse.com/1242028","tags":["report"]},{"url":"https://bugzilla.suse.com/1243378","tags":["report"]},{"url":"https://www.suse.com/security/cve/CVE-2025-30193","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2025-30194","tags":["web"]},{"url":"https://ubuntu.com/security/CVE-2025-30194","tags":["report"]},{"url":"https://www.cve.org/CVERecord?id=CVE-2025-30194","tags":["report"]},{"url":"https://www.dnsdist.org/security-advisories/powerdns-advisory-for-dnsdist-2025-02.html","tags":["report"]},{"url":"https://github.com/PowerDNS/pdns/issues/15475","tags":["report"]},{"url":"https://github.com/PowerDNS/pdns/pull/15482","tags":["report"]},{"url":"https://lists.opensuse.org/archives/list/security-announce@lists.opensuse.org/thread/PSEZXT5AM4R34VN4HUDJO6XOWI54GTDJ/","tags":["advisory"]}],"sources":{"cve":[{"id":"CVE-2025-30194","title":"Denial of service via crafted DoH exchange","description":"When DNSdist is configured to provide DoH via the nghttp2 provider, an attacker can cause a denial of service by crafting a DoH exchange that triggers an illegal memory access (double-free) and crash of DNSdist, causing a denial of service.\n\nThe remedy is: upgrade to the patched 1.9.9 version.\n\nA workaround is to temporarily switch to the h2o provider until DNSdist has been upgraded to a fixed version.\n\nWe would like to thank Charles Howes for bringing this issue to our attention.","status":"published","published":"2025-04-29T11:25:47.141Z","modified":"2025-06-20T15:42:56.102Z","cvss":[{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"high","assessor":"cna"}],"cwes":["CWE-416"],"updated_at":"2026-11-02T14:32:35.099955Z"}],"euvd":[{"id":"EUVD-2025-14811","description":"When DNSdist is configured to provide DoH via the nghttp2 provider, an attacker can cause a denial of service by crafting a DoH exchange that triggers an illegal memory access (double-free) and crash of DNSdist, causing a denial of service.\n\nThe remedy is: upgrade to the patched 1.9.9 version.\n\nA workaround is to temporarily switch to the h2o provider until DNSdist has been upgraded to a fixed version.\n\nWe would like to thank Charles Howes for bringing this issue to our attention.","status":"published","published":"2025-04-29T11:25:47Z","modified":"2025-06-20T15:42:56Z","cvss":[{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"high"}],"updated_at":"2026-11-02T20:32:19.507179Z"}],"ghsa":[{"id":"GHSA-487w-xx5j-gqwc","title":"When DNSdist is configured to provide DoH via the nghttp2 provider, an attacker can cause a...","description":"When DNSdist is configured to provide DoH via the nghttp2 provider, an attacker can cause a denial of service by crafting a DoH exchange that triggers an illegal memory access (double-free) and crash of DNSdist, causing a denial of service.\n\nThe remedy is: upgrade to the patched 1.9.9 version.\n\nA workaround is to temporarily switch to the h2o provider until DNSdist has been upgraded to a fixed version.\n\nWe would like to thank Charles Howes for bringing this issue to our attention.","status":"published","published":"2025-04-29T12:30:21Z","modified":"2025-06-20T21:32:03Z","cvss":[{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"high"}],"cwes":["CWE-416"],"updated_at":"2026-11-02T15:02:46.844129Z"}],"nvd":[{"id":"CVE-2025-30194","description":"When DNSdist is configured to provide DoH via the nghttp2 provider, an attacker can cause a denial of service by crafting a DoH exchange that triggers an illegal memory access (double-free) and crash of DNSdist, causing a denial of service.\n\nThe remedy is: upgrade to the patched 1.9.9 version.\n\nA workaround is to temporarily switch to the h2o provider until DNSdist has been upgraded to a fixed version.\n\nWe would like to thank Charles Howes for bringing this issue to our attention.","status":"published","published":"2025-04-29T12:15:31.983Z","modified":"2026-06-17T09:08:19.793Z","cvss":[{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"high","assessor":"secondary"}],"cwes":["CWE-416"],"updated_at":"2026-11-02T14:11:02.570368Z"}],"osv":[{"id":"ALPINE-CVE-2025-30194","description":"When DNSdist is configured to provide DoH via the nghttp2 provider, an attacker can cause a denial of service by crafting a DoH exchange that triggers an illegal memory access (double-free) and crash of DNSdist, causing a denial of service.\n\nThe remedy is: upgrade to the patched 1.9.9 version.\n\nA workaround is to temporarily switch to the h2o provider until DNSdist has been upgraded to a fixed version.\n\nWe would like to thank Charles Howes for bringing this issue to our attention.","status":"published","published":"2025-04-29T12:15:31.983Z","modified":"2026-11-03T06:32:14.764563686Z","cvss":[{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"high"}],"updated_at":"2026-11-03T07:17:57.723967Z"},{"id":"CVE-2025-30194","title":"Denial of service via crafted DoH exchange","description":"When DNSdist is configured to provide DoH via the nghttp2 provider, an attacker can cause a denial of service by crafting a DoH exchange that triggers an illegal memory access (double-free) and crash of DNSdist, causing a denial of service.\n\nThe remedy is: upgrade to the patched 1.9.9 version.\n\nA workaround is to temporarily switch to the h2o provider until DNSdist has been upgraded to a fixed version.\n\nWe would like to thank Charles Howes for bringing this issue to our attention.","status":"published","published":"2025-04-29T11:25:47.141Z","modified":"2026-10-28T02:30:35.879819087Z","cvss":[{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"high"}],"cwes":["CWE-416"],"updated_at":"2026-11-02T15:44:47.708311Z"},{"id":"DEBIAN-CVE-2025-30194","description":"When DNSdist is configured to provide DoH via the nghttp2 provider, an attacker can cause a denial of service by crafting a DoH exchange that triggers an illegal memory access (double-free) and crash of DNSdist, causing a denial of service.  The remedy is: upgrade to the patched 1.9.9 version.  A workaround is to temporarily switch to the h2o provider until DNSdist has been upgraded to a fixed version.  We would like to thank Charles Howes for bringing this issue to our attention.","status":"published","published":"2025-04-29T12:15:31.983Z","modified":"2026-09-01T20:05:45.513167207Z","cvss":[{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"high"}],"updated_at":"2026-11-02T15:45:45.870237Z"},{"id":"UBUNTU-CVE-2025-30194","description":"When DNSdist is configured to provide DoH via the nghttp2 provider, an attacker can cause a denial of service by crafting a DoH exchange that triggers an illegal memory access (double-free) and crash of DNSdist, causing a denial of service. The remedy is: upgrade to the patched 1.9.9 version. A workaround is to temporarily switch to the h2o provider until DNSdist has been upgraded to a fixed version. We would like to thank Charles Howes for bringing this issue to our attention.","status":"withdrawn","published":"2025-04-29T12:15:00Z","modified":"2026-02-10T08:07:45.733463Z","cvss":[{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"high"}],"updated_at":"2026-11-02T16:55:26.330196Z"},{"id":"openSUSE-SU-2025:15157-1","title":"dnsdist-1.9.10-2.1 on GA media","description":"These are all security issues fixed in the dnsdist-1.9.10-2.1 package on the GA media of openSUSE Tumbleweed.","status":"published","published":"2025-05-26T00:00:00Z","modified":"2026-03-23T04:53:25.227549Z","updated_at":"2026-11-02T16:58:37.399567Z"},{"id":"SUSE-SU-2025:01743-1","title":"Security update for dnsdist","description":"This update for dnsdist fixes the following issues:\n\nUpdate to version 1.9.10.\n  \n- CVE-2025-30194: illegal memory access (double-free) when processing specially crafted DoH exchanges leads to a\n  denial-of-service (bsc#1242028).\n- CVE-2025-30193: stack exhaustion when processing too many queries on incoming TCP connections leads to a\n  denial-of-service (bsc#1243378).\n","status":"published","published":"2025-05-29T11:44:30Z","modified":"2026-02-04T03:25:21.843911Z","updated_at":"2026-11-02T15:53:56.123059Z"}]}}