{"id":"USN-6633-1","summary":"bind9 vulnerabilities","details":"Shoham Danino, Anat Bremler-Barr, Yehuda Afek, and Yuval Shavitt discovered\nthat Bind incorrectly handled parsing large DNS messages. A remote attacker\ncould possibly use this issue to cause Bind to consume resources, leading\nto a denial of service. (CVE-2023-4408)\n\nElias Heftrig, Haya Schulmann, Niklas Vogel, and Michael Waidner discovered\nthat Bind icorrectly handled validating DNSSEC messages. A remote attacker\ncould possibly use this issue to cause Bind to consume resources, leading\nto a denial of service. (CVE-2023-50387)\n\nIt was discovered that Bind incorrectly handled preparing an NSEC3 closest\nencloser proof. A remote attacker could possibly use this issue to cause\nBind to consume resources, leading to a denial of service. (CVE-2023-50868)\n\nIt was discovered that Bind incorrectly handled reverse zone queries when\nnxdomain-redirect is enabled. A remote attacker could possibly use this\nissue to cause Bind to crash, leading to a denial of service.\n(CVE-2023-5517)\n\nIt was discovered that Bind incorrectly handled recursive resolution when\nboth DNS64 and serve-stable were enabled. A remote attacker could possibly\nuse this issue to cause Bind to crash, leading to a denial of service.\n(CVE-2023-5679)\n","modified":"2026-04-27T17:17:23.734452059Z","published":"2024-02-13T15:30:25Z","related":["UBUNTU-CVE-2023-4408","UBUNTU-CVE-2023-50387","UBUNTU-CVE-2023-50868","UBUNTU-CVE-2023-5517","UBUNTU-CVE-2023-5679"],"upstream":["CVE-2023-4408","CVE-2023-50387","CVE-2023-50868","CVE-2023-5517","CVE-2023-5679","UBUNTU-CVE-2023-4408","UBUNTU-CVE-2023-50387","UBUNTU-CVE-2023-50868","UBUNTU-CVE-2023-5517","UBUNTU-CVE-2023-5679"],"references":[{"type":"ADVISORY","url":"https://ubuntu.com/security/notices/USN-6633-1"},{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2023-4408"},{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2023-5517"},{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2023-5679"},{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2023-50387"},{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2023-50868"}],"affected":[{"package":{"name":"bind9","ecosystem":"Ubuntu:22.04:LTS","purl":"pkg:deb/ubuntu/bind9@1:9.18.18-0ubuntu0.22.04.2?arch=source&distro=jammy"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1:9.18.18-0ubuntu0.22.04.2"}]}],"versions":["1:9.16.15-1ubuntu1","1:9.16.15-1ubuntu2","1:9.16.15-1ubuntu3","1:9.18.0-2ubuntu1","1:9.18.0-2ubuntu2","1:9.18.0-2ubuntu3","1:9.18.1-1ubuntu1","1:9.18.1-1ubuntu1.1","1:9.18.1-1ubuntu1.2","1:9.18.1-1ubuntu1.3","1:9.18.12-0ubuntu0.22.04.1","1:9.18.12-0ubuntu0.22.04.2","1:9.18.12-0ubuntu0.22.04.3","1:9.18.18-0ubuntu0.22.04.1"],"ecosystem_specific":{"availability":"No subscription required","binaries":[{"binary_version":"1:9.18.18-0ubuntu0.22.04.2","binary_name":"bind9"},{"binary_version":"1:9.18.18-0ubuntu0.22.04.2","binary_name":"bind9-dnsutils"},{"binary_version":"1:9.18.18-0ubuntu0.22.04.2","binary_name":"bind9-host"},{"binary_version":"1:9.18.18-0ubuntu0.22.04.2","binary_name":"bind9-libs"},{"binary_version":"1:9.18.18-0ubuntu0.22.04.2","binary_name":"bind9-utils"},{"binary_version":"1:9.18.18-0ubuntu0.22.04.2","binary_name":"bind9utils"},{"binary_version":"1:9.18.18-0ubuntu0.22.04.2","binary_name":"dnsutils"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/usn/USN-6633-1.json","cves_map":{"ecosystem":"Ubuntu:22.04:LTS","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-2023-4408"},{"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-2023-5517"},{"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-2023-5679"},{"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":"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-2023-50387"},{"severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N"},{"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-2023-50868"}]}}}],"schema_version":"1.7.5"}