{"id":"UBUNTU-CVE-2023-41909","details":"An issue was discovered in FRRouting FRR through 9.0. bgp_nlri_parse_flowspec in bgpd/bgp_flowspec.c processes malformed requests with no attributes, leading to a NULL pointer dereference.","modified":"2026-02-04T02:21:01.134185Z","published":"2023-09-05T07:15:00Z","related":["USN-6436-1"],"upstream":["CVE-2023-41909"],"references":[{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2023-41909"},{"type":"REPORT","url":"https://github.com/FRRouting/frr/commit/cfd04dcb3e689754a72507d086ba3b9709fc5ed8"},{"type":"REPORT","url":"https://github.com/FRRouting/frr/commit/cc1a551cb007cc8ed8b1ea0605a7ab46c16de12b"},{"type":"REPORT","url":"https://github.com/FRRouting/frr/commit/0a12b878082f77b67ad5d9b4782846ac738575a2"},{"type":"REPORT","url":"https://github.com/FRRouting/frr/pull/13222/commits/cfd04dcb3e689754a72507d086ba3b9709fc5ed8"},{"type":"ADVISORY","url":"https://ubuntu.com/security/notices/USN-6436-1"},{"type":"REPORT","url":"https://www.cve.org/CVERecord?id=CVE-2023-41909"}],"affected":[{"package":{"name":"frr","ecosystem":"Ubuntu:Pro:20.04:LTS","purl":"pkg:deb/ubuntu/frr@7.2.1-1ubuntu0.2+esm1?arch=source&distro=esm-apps/focal"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"7.2.1-1ubuntu0.2+esm1"}]}],"versions":["6.0.2-2build2","7.2-1ubuntu1","7.2-1ubuntu2","7.2.1-1","7.2.1-1ubuntu0.1","7.2.1-1ubuntu0.2"],"ecosystem_specific":{"binaries":[{"binary_version":"7.2.1-1ubuntu0.2+esm1","binary_name":"frr"},{"binary_version":"7.2.1-1ubuntu0.2+esm1","binary_name":"frr-pythontools"},{"binary_version":"7.2.1-1ubuntu0.2+esm1","binary_name":"frr-rpki-rtrlib"},{"binary_version":"7.2.1-1ubuntu0.2+esm1","binary_name":"frr-snmp"}],"availability":"Available with Ubuntu Pro: https://ubuntu.com/pro"},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2023/UBUNTU-CVE-2023-41909.json"}},{"package":{"name":"frr","ecosystem":"Ubuntu:22.04:LTS","purl":"pkg:deb/ubuntu/frr@8.1-1ubuntu1.6?arch=source&distro=jammy"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"8.1-1ubuntu1.6"}]}],"versions":["7.5.1-1.1","8.1-1","8.1-1ubuntu1","8.1-1ubuntu1.1","8.1-1ubuntu1.2","8.1-1ubuntu1.3","8.1-1ubuntu1.4","8.1-1ubuntu1.5"],"ecosystem_specific":{"binaries":[{"binary_version":"8.1-1ubuntu1.6","binary_name":"frr"},{"binary_version":"8.1-1ubuntu1.6","binary_name":"frr-pythontools"},{"binary_version":"8.1-1ubuntu1.6","binary_name":"frr-rpki-rtrlib"},{"binary_version":"8.1-1ubuntu1.6","binary_name":"frr-snmp"}],"availability":"No subscription required"},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2023/UBUNTU-CVE-2023-41909.json"}}],"schema_version":"1.7.3","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"}]}