{"id":"USN-8037-1","summary":"dnsdist vulnerabilities","details":"It was discovered that HTTP/2, which is used/vendored by DNSdist, did not\nproperly account for resources when handling client-triggered stream \nresets. An attacker could possibly use this issue to cause a \ndenial of service. (CVE-2025-8671)\n\nIt was discovered that DNSdist did not properly manage memory limits when\nhandling an unlimited number of queries on a single TCP connection. An \nattacker could possibly use this issue to cause a denial of service.\n(CVE-2025-30193)\n\nIt was discovered that DNSdist, when configured with the nghttp2 library,\ndid not correctly process certain DNS over HTTPS queries. An attacker\ncould possibly use this cause a denial of service. (CVE-2025-30187)","modified":"2026-04-27T18:17:20.256131567Z","published":"2026-02-12T15:41:01Z","related":["UBUNTU-CVE-2025-30187","UBUNTU-CVE-2025-30193","UBUNTU-CVE-2025-8671"],"upstream":["CVE-2025-30187","CVE-2025-30193","CVE-2025-8671","UBUNTU-CVE-2025-30187","UBUNTU-CVE-2025-30193","UBUNTU-CVE-2025-8671"],"references":[{"type":"ADVISORY","url":"https://ubuntu.com/security/notices/USN-8037-1"},{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2025-8671"},{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2025-30187"},{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2025-30193"}],"affected":[{"package":{"name":"dnsdist","ecosystem":"Ubuntu:Pro:22.04:LTS","purl":"pkg:deb/ubuntu/dnsdist@1.6.1-1ubuntu0.1~esm2?arch=source&distro=esm-apps/jammy"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1.6.1-1ubuntu0.1~esm2"}]}],"versions":["1.5.1-3build2","1.6.1-1build1","1.6.1-1ubuntu0.1~esm1"],"ecosystem_specific":{"binaries":[{"binary_name":"dnsdist","binary_version":"1.6.1-1ubuntu0.1~esm2"}],"availability":"Available with Ubuntu Pro: https://ubuntu.com/pro"},"database_specific":{"cves_map":{"cves":[{"id":"CVE-2025-30193","severity":[{"score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","type":"CVSS_V3"},{"score":"medium","type":"Ubuntu"}]}],"ecosystem":"Ubuntu:Pro:22.04:LTS"},"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/usn/USN-8037-1.json"}},{"package":{"name":"dnsdist","ecosystem":"Ubuntu:Pro:24.04:LTS","purl":"pkg:deb/ubuntu/dnsdist@1.8.3-2ubuntu0.1~esm1?arch=source&distro=esm-apps/noble"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1.8.3-2ubuntu0.1~esm1"}]}],"versions":["1.8.0-1","1.8.2-1","1.8.2-2","1.8.2-3","1.8.3-1","1.8.3-2","1.8.3-2build1","1.8.3-2build2"],"ecosystem_specific":{"binaries":[{"binary_name":"dnsdist","binary_version":"1.8.3-2ubuntu0.1~esm1"}],"availability":"Available with Ubuntu Pro: https://ubuntu.com/pro"},"database_specific":{"cves_map":{"cves":[{"severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H"},{"type":"Ubuntu","score":"medium"}],"id":"CVE-2025-8671"},{"id":"CVE-2025-30193","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H"},{"score":"medium","type":"Ubuntu"}]}],"ecosystem":"Ubuntu:Pro:24.04:LTS"},"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/usn/USN-8037-1.json"}},{"package":{"name":"dnsdist","ecosystem":"Ubuntu:25.10","purl":"pkg:deb/ubuntu/dnsdist@1.9.10-1ubuntu0.1?arch=source&distro=questing"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1.9.10-1ubuntu0.1"}]}],"versions":["1.9.8-1","1.9.10-1"],"ecosystem_specific":{"availability":"No subscription required","binaries":[{"binary_name":"dnsdist","binary_version":"1.9.10-1ubuntu0.1"}]},"database_specific":{"cves_map":{"cves":[{"id":"CVE-2025-8671","severity":[{"score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","type":"CVSS_V3"},{"score":"medium","type":"Ubuntu"}]},{"id":"CVE-2025-30187","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:L"},{"score":"medium","type":"Ubuntu"}]}],"ecosystem":"Ubuntu:25.10"},"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/usn/USN-8037-1.json"}}],"schema_version":"1.7.5"}