{"id":"UBUNTU-CVE-2023-23009","details":"Libreswan 4.9 allows remote attackers to cause a denial of service (assert failure and daemon restart) via crafted TS payload with an incorrect selector length.","modified":"2026-05-20T16:07:27.189008329Z","published":"2023-02-21T16:15:00Z","upstream":["CVE-2023-23009"],"references":[{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2023-23009"},{"type":"REPORT","url":"https://github.com/libreswan/libreswan/issues/954"},{"type":"REPORT","url":"https://www.cve.org/CVERecord?id=CVE-2023-23009"}],"affected":[{"package":{"name":"libreswan","ecosystem":"Ubuntu:18.04:LTS","purl":"pkg:deb/ubuntu/libreswan?arch=source&distro=bionic"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["3.20-7build1","3.21-2","3.22-1","3.22-2","3.22-3","3.22-4","3.23-1","3.23-4"],"ecosystem_specific":{"binaries":[{"binary_name":"libreswan","binary_version":"3.23-4"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2023/UBUNTU-CVE-2023-23009.json"}},{"package":{"name":"libreswan","ecosystem":"Ubuntu:20.04:LTS","purl":"pkg:deb/ubuntu/libreswan?arch=source&distro=focal"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["3.29-2","3.29-2build1"],"ecosystem_specific":{"binaries":[{"binary_name":"libreswan","binary_version":"3.29-2build1"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2023/UBUNTU-CVE-2023-23009.json"}},{"package":{"name":"libreswan","ecosystem":"Ubuntu:22.04:LTS","purl":"pkg:deb/ubuntu/libreswan?arch=source&distro=jammy"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["3.32-3ubuntu3"],"ecosystem_specific":{"binaries":[{"binary_name":"libreswan","binary_version":"3.32-3ubuntu3"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2023/UBUNTU-CVE-2023-23009.json"}},{"package":{"name":"libreswan","ecosystem":"Ubuntu:24.04:LTS","purl":"pkg:deb/ubuntu/libreswan?arch=source&distro=noble"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["4.11-1ubuntu1","4.12-1ubuntu1","4.14-1ubuntu1","4.14-1ubuntu2"],"ecosystem_specific":{"binaries":[{"binary_name":"libreswan","binary_version":"4.14-1ubuntu2"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2023/UBUNTU-CVE-2023-23009.json"}},{"package":{"name":"libreswan","ecosystem":"Ubuntu:25.10","purl":"pkg:deb/ubuntu/libreswan?arch=source&distro=questing"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["4.14-1ubuntu2","5.2-2.2ubuntu1"],"ecosystem_specific":{"binaries":[{"binary_name":"libreswan","binary_version":"5.2-2.2ubuntu1"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2023/UBUNTU-CVE-2023-23009.json"}},{"package":{"name":"libreswan","ecosystem":"Ubuntu:26.04:LTS","purl":"pkg:deb/ubuntu/libreswan?arch=source&distro=resolute"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["5.2-2.2ubuntu1","5.2-2.2ubuntu2"],"ecosystem_specific":{"binaries":[{"binary_name":"libreswan","binary_version":"5.2-2.2ubuntu2"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2023/UBUNTU-CVE-2023-23009.json"}}],"schema_version":"1.7.5","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H"},{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H"},{"type":"Ubuntu","score":"medium"}]}