{"id":"UBUNTU-CVE-2022-36440","details":"A reachable assertion was found in Frrouting frr-bgpd 8.3.0 in the peek_for_as4_capability function. Attackers can maliciously construct BGP open packets and send them to BGP peers running frr-bgpd, resulting in DoS.","modified":"2025-07-16T07:56:49.970995Z","published":"2023-04-03T16:15:00Z","withdrawn":"2025-07-18T16:49:31Z","upstream":["CVE-2022-36440"],"references":[{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2022-36440"},{"type":"REPORT","url":"https://github.com/spwpun/pocs/blob/main/frr-bgpd.md"},{"type":"REPORT","url":"https://www.cve.org/CVERecord?id=CVE-2022-36440"}],"affected":[{"package":{"name":"frr","ecosystem":"Ubuntu:20.04:LTS","purl":"pkg:deb/ubuntu/frr@7.2.1-1ubuntu0.2?arch=source&distro=focal"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"7.2.1-1ubuntu0.2"}]}],"versions":["6.0.2-2build2","7.2-1ubuntu1","7.2-1ubuntu2","7.2.1-1","7.2.1-1ubuntu0.1"],"ecosystem_specific":{"binaries":[{"binary_name":"frr","binary_version":"7.2.1-1ubuntu0.2"},{"binary_name":"frr-dbgsym","binary_version":"7.2.1-1ubuntu0.2"},{"binary_name":"frr-doc","binary_version":"7.2.1-1ubuntu0.2"},{"binary_name":"frr-pythontools","binary_version":"7.2.1-1ubuntu0.2"},{"binary_name":"frr-rpki-rtrlib","binary_version":"7.2.1-1ubuntu0.2"},{"binary_name":"frr-rpki-rtrlib-dbgsym","binary_version":"7.2.1-1ubuntu0.2"},{"binary_name":"frr-snmp","binary_version":"7.2.1-1ubuntu0.2"},{"binary_name":"frr-snmp-dbgsym","binary_version":"7.2.1-1ubuntu0.2"}],"availability":"No subscription required"},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2022/UBUNTU-CVE-2022-36440.json"}},{"package":{"name":"frr","ecosystem":"Ubuntu:22.04:LTS","purl":"pkg:deb/ubuntu/frr@8.1-1ubuntu1.3?arch=source&distro=jammy"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"8.1-1ubuntu1.3"}]}],"versions":["7.5.1-1.1","8.1-1","8.1-1ubuntu1","8.1-1ubuntu1.1","8.1-1ubuntu1.2"],"ecosystem_specific":{"availability":"No subscription required","binaries":[{"binary_name":"frr","binary_version":"8.1-1ubuntu1.3"},{"binary_name":"frr-dbgsym","binary_version":"8.1-1ubuntu1.3"},{"binary_name":"frr-doc","binary_version":"8.1-1ubuntu1.3"},{"binary_name":"frr-pythontools","binary_version":"8.1-1ubuntu1.3"},{"binary_version":"8.1-1ubuntu1.3","binary_name":"frr-rpki-rtrlib"},{"binary_name":"frr-rpki-rtrlib-dbgsym","binary_version":"8.1-1ubuntu1.3"},{"binary_name":"frr-snmp","binary_version":"8.1-1ubuntu1.3"},{"binary_name":"frr-snmp-dbgsym","binary_version":"8.1-1ubuntu1.3"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2022/UBUNTU-CVE-2022-36440.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"}]}