{"id":"UBUNTU-CVE-2019-25591","details":"DNSS Domain Name Search Software 2.1.8 contains a buffer overflow vulnerability in the registration code input field that allows local attackers to crash the application by submitting an excessively long string. Attackers can trigger a denial of service by pasting a malicious registration code containing 300 repeated characters into the Name/Key field via the Register menu option.","modified":"2026-05-20T16:03:51.409561600Z","published":"2026-03-22T14:16:00Z","upstream":["CVE-2019-25591"],"references":[{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2019-25591"},{"type":"REPORT","url":"https://www.cve.org/CVERecord?id=CVE-2019-25591"},{"type":"REPORT","url":"http://www.nsauditor.com/downloads/dnss_setup.exe"},{"type":"REPORT","url":"https://www.exploit-db.com/exploits/46831"},{"type":"REPORT","url":"https://www.vulncheck.com/advisories/dnss-domain-name-search-software-denial-of-service"}],"affected":[{"package":{"name":"dnss","ecosystem":"Ubuntu:18.04:LTS","purl":"pkg:deb/ubuntu/dnss?arch=source&distro=bionic"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["0.0~git20170810.0.860d2af1-1"],"ecosystem_specific":{"binaries":[{"binary_name":"dnss","binary_version":"0.0~git20170810.0.860d2af1-1"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2019/UBUNTU-CVE-2019-25591.json"}},{"package":{"name":"dnss","ecosystem":"Ubuntu:20.04:LTS","purl":"pkg:deb/ubuntu/dnss?arch=source&distro=focal"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["0.0~git20180721.0.2de63ab0-1"],"ecosystem_specific":{"binaries":[{"binary_version":"0.0~git20180721.0.2de63ab0-1","binary_name":"dnss"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2019/UBUNTU-CVE-2019-25591.json"}},{"package":{"name":"dnss","ecosystem":"Ubuntu:Pro:22.04:LTS","purl":"pkg:deb/ubuntu/dnss?arch=source&distro=esm-apps%2Fjammy"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["0.0~git20200927.0.6aad832e-2","0.0~git20200927.0.6aad832e-2build1","0.0~git20200927.0.6aad832e-2ubuntu0.1","0.0~git20200927.0.6aad832e-2ubuntu0.2","0.0~git20200927.0.6aad832e-2ubuntu0.3","0.0~git20200927.0.6aad832e-2ubuntu0.3+esm1","0.0~git20200927.0.6aad832e-2ubuntu0.3+esm2"],"ecosystem_specific":{"binaries":[{"binary_version":"0.0~git20200927.0.6aad832e-2ubuntu0.3+esm2","binary_name":"dnss"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2019/UBUNTU-CVE-2019-25591.json"}},{"package":{"name":"dnss","ecosystem":"Ubuntu:Pro:24.04:LTS","purl":"pkg:deb/ubuntu/dnss?arch=source&distro=esm-apps%2Fnoble"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["0.0~git20230806.0.38ca607c-1build1","0.0~git20230806.0.38ca607c-1ubuntu0.24.04.1","0.0~git20230806.0.38ca607c-1ubuntu0.24.04.2","0.0~git20230806.0.38ca607c-1ubuntu0.24.04.2+esm1","0.0~git20230806.0.38ca607c-1ubuntu0.24.04.3","0.0~git20230806.0.38ca607c-1ubuntu0.24.04.3+esm1","0.0~git20230806.0.38ca607c-1ubuntu0.24.04.3+esm2"],"ecosystem_specific":{"binaries":[{"binary_name":"dnss","binary_version":"0.0~git20230806.0.38ca607c-1ubuntu0.24.04.3+esm2"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2019/UBUNTU-CVE-2019-25591.json"}},{"package":{"name":"dnss","ecosystem":"Ubuntu:25.10","purl":"pkg:deb/ubuntu/dnss?arch=source&distro=questing"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["0.1.0-1"],"ecosystem_specific":{"binaries":[{"binary_name":"dnss","binary_version":"0.1.0-1"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2019/UBUNTU-CVE-2019-25591.json"}},{"package":{"name":"dnss","ecosystem":"Ubuntu:26.04:LTS","purl":"pkg:deb/ubuntu/dnss?arch=source&distro=resolute"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["0.1.0-1","0.1.0-1build1"],"ecosystem_specific":{"binaries":[{"binary_name":"dnss","binary_version":"0.1.0-1build1"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2019/UBUNTU-CVE-2019-25591.json"}}],"schema_version":"1.7.5","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H"},{"type":"CVSS_V4","score":"CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N"},{"type":"Ubuntu","score":"medium"}]}