{"id":"USN-6990-1","summary":"znc vulnerability","details":"Johannes Kuhn (DasBrain) discovered that znc incorrectly handled\nuser input under certain operations. An attacker could possibly\nuse this issue to execute arbitrary code on a user's system if\nthe user was tricked into joining a malicious server.\n","modified":"2026-06-29T13:46:59.337155282Z","published":"2024-09-04T18:37:47Z","related":["UBUNTU-CVE-2024-39844"],"upstream":["CVE-2024-39844","UBUNTU-CVE-2024-39844"],"references":[{"type":"ADVISORY","url":"https://ubuntu.com/security/notices/USN-6990-1"},{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2024-39844"}],"affected":[{"package":{"name":"znc","ecosystem":"Ubuntu:Pro:14.04:LTS","purl":"pkg:deb/ubuntu/znc?arch=source&distro=trusty%2Fesm"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1.2-3ubuntu0.1+esm3"}]}],"versions":["1.0-5","1.0-5build1","1.2-1","1.2-2","1.2-3","1.2-3build1","1.2-3ubuntu0.1","1.2-3ubuntu0.1+esm1"],"ecosystem_specific":{"binaries":[{"binary_name":"znc","binary_version":"1.2-3ubuntu0.1+esm3"},{"binary_name":"znc-perl","binary_version":"1.2-3ubuntu0.1+esm3"},{"binary_name":"znc-python","binary_version":"1.2-3ubuntu0.1+esm3"},{"binary_name":"znc-tcl","binary_version":"1.2-3ubuntu0.1+esm3"}],"availability":"Available with Ubuntu Pro (Infra-only): https://ubuntu.com/pro"},"database_specific":{"cves_map":{"ecosystem":"Ubuntu:Pro:14.04:LTS","cves":[{"severity":[{"score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","type":"CVSS_V3"},{"type":"Ubuntu","score":"medium"}],"id":"CVE-2024-39844"}]},"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/usn/USN-6990-1.json"}},{"package":{"name":"znc","ecosystem":"Ubuntu:Pro:16.04:LTS","purl":"pkg:deb/ubuntu/znc?arch=source&distro=esm-apps%2Fxenial"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1.6.3-1ubuntu0.2+esm2"}]}],"versions":["1.6.1-1","1.6.1-1build1","1.6.1-2","1.6.2-1","1.6.2-2","1.6.2-2build1","1.6.3-1","1.6.3-1ubuntu0.1","1.6.3-1ubuntu0.2"],"ecosystem_specific":{"availability":"Available with Ubuntu Pro: https://ubuntu.com/pro","binaries":[{"binary_name":"znc","binary_version":"1.6.3-1ubuntu0.2+esm2"},{"binary_name":"znc-perl","binary_version":"1.6.3-1ubuntu0.2+esm2"},{"binary_name":"znc-python","binary_version":"1.6.3-1ubuntu0.2+esm2"},{"binary_name":"znc-tcl","binary_version":"1.6.3-1ubuntu0.2+esm2"}]},"database_specific":{"cves_map":{"cves":[{"severity":[{"score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","type":"CVSS_V3"},{"type":"Ubuntu","score":"medium"}],"id":"CVE-2024-39844"}],"ecosystem":"Ubuntu:Pro:16.04:LTS"},"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/usn/USN-6990-1.json"}},{"package":{"name":"znc","ecosystem":"Ubuntu:Pro:18.04:LTS","purl":"pkg:deb/ubuntu/znc?arch=source&distro=esm-apps%2Fbionic"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1.6.6-1ubuntu0.2+esm2"}]}],"versions":["1.6.5-2build2","1.6.5-2build3","1.6.5-2build4","1.6.5-2build5","1.6.6-1","1.6.6-1ubuntu0.1","1.6.6-1ubuntu0.2"],"ecosystem_specific":{"availability":"Available with Ubuntu Pro: https://ubuntu.com/pro","binaries":[{"binary_name":"znc","binary_version":"1.6.6-1ubuntu0.2+esm2"},{"binary_name":"znc-perl","binary_version":"1.6.6-1ubuntu0.2+esm2"},{"binary_name":"znc-python","binary_version":"1.6.6-1ubuntu0.2+esm2"},{"binary_name":"znc-tcl","binary_version":"1.6.6-1ubuntu0.2+esm2"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/usn/USN-6990-1.json","cves_map":{"ecosystem":"Ubuntu:Pro:18.04:LTS","cves":[{"id":"CVE-2024-39844","severity":[{"score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","type":"CVSS_V3"},{"type":"Ubuntu","score":"medium"}]}]}}},{"package":{"name":"znc","ecosystem":"Ubuntu:Pro:20.04:LTS","purl":"pkg:deb/ubuntu/znc?arch=source&distro=esm-apps%2Ffocal"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1.7.5-4ubuntu0.1~esm2"}]}],"versions":["1.7.4-7","1.7.4-7build1","1.7.5-1","1.7.5-2","1.7.5-2build1","1.7.5-2build2","1.7.5-2build3","1.7.5-3","1.7.5-3build1","1.7.5-4"],"ecosystem_specific":{"binaries":[{"binary_name":"znc","binary_version":"1.7.5-4ubuntu0.1~esm2"},{"binary_name":"znc-backlog","binary_version":"0.20180824+1.7.5-4ubuntu0.1~esm2"},{"binary_name":"znc-perl","binary_version":"1.7.5-4ubuntu0.1~esm2"},{"binary_name":"znc-push","binary_version":"1.0.0+git20190521.78d0385+1.7.5-4ubuntu0.1~esm2"},{"binary_version":"1.7.5-4ubuntu0.1~esm2","binary_name":"znc-python"},{"binary_version":"1.7.5-4ubuntu0.1~esm2","binary_name":"znc-tcl"}],"availability":"Available with Ubuntu Pro: https://ubuntu.com/pro"},"database_specific":{"cves_map":{"cves":[{"id":"CVE-2024-39844","severity":[{"score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","type":"CVSS_V3"},{"type":"Ubuntu","score":"medium"}]}],"ecosystem":"Ubuntu:Pro:20.04:LTS"},"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/usn/USN-6990-1.json"}},{"package":{"name":"znc","ecosystem":"Ubuntu:22.04:LTS","purl":"pkg:deb/ubuntu/znc?arch=source&distro=jammy"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1.8.2-2ubuntu0.1"}]}],"versions":["1.8.2-2build1","1.8.2-2build2","1.8.2-2build3","1.8.2-2build5"],"ecosystem_specific":{"availability":"No subscription required","binaries":[{"binary_name":"znc","binary_version":"1.8.2-2ubuntu0.1"},{"binary_version":"0.20180824+1.8.2-2ubuntu0.1","binary_name":"znc-backlog"},{"binary_name":"znc-perl","binary_version":"1.8.2-2ubuntu0.1"},{"binary_name":"znc-push","binary_version":"1.0.0+git20190521.78d0385+1.8.2-2ubuntu0.1"},{"binary_name":"znc-python","binary_version":"1.8.2-2ubuntu0.1"},{"binary_version":"1.8.2-2ubuntu0.1","binary_name":"znc-tcl"}]},"database_specific":{"cves_map":{"cves":[{"id":"CVE-2024-39844","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H"},{"type":"Ubuntu","score":"medium"}]}],"ecosystem":"Ubuntu:22.04:LTS"},"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/usn/USN-6990-1.json"}},{"package":{"name":"znc","ecosystem":"Ubuntu:Pro:24.04:LTS","purl":"pkg:deb/ubuntu/znc?arch=source&distro=esm-apps%2Fnoble"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1.9.0-2ubuntu0.1~esm2"}]}],"versions":["1.8.2-3.1","1.8.2-4","1.8.2-4build1","1.8.2-4build3","1.9.0-2build2","1.9.0-2build3"],"ecosystem_specific":{"availability":"Available with Ubuntu Pro: https://ubuntu.com/pro","binaries":[{"binary_version":"1.9.0-2ubuntu0.1~esm2","binary_name":"znc"},{"binary_name":"znc-backlog","binary_version":"0.20180824+1.9.0-2ubuntu0.1~esm2"},{"binary_name":"znc-perl","binary_version":"1.9.0-2ubuntu0.1~esm2"},{"binary_name":"znc-push","binary_version":"1.0.0+git20190521.78d0385+1.9.0-2ubuntu0.1~esm2"},{"binary_version":"1.9.0-2ubuntu0.1~esm2","binary_name":"znc-python"},{"binary_version":"1.9.0-2ubuntu0.1~esm2","binary_name":"znc-tcl"}]},"database_specific":{"cves_map":{"ecosystem":"Ubuntu:Pro:24.04:LTS","cves":[{"id":"CVE-2024-39844","severity":[{"score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","type":"CVSS_V3"},{"type":"Ubuntu","score":"medium"}]}]},"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/usn/USN-6990-1.json"}}],"schema_version":"1.7.5"}