{"id":"UBUNTU-CVE-2016-10396","details":"The racoon daemon in IPsec-Tools 0.8.2 contains a remotely exploitable computational-complexity attack when parsing and storing ISAKMP fragments. The implementation permits a remote attacker to exhaust computational resources on the remote endpoint by repeatedly sending ISAKMP fragment packets in a particular order such that the worst-case computational complexity is realized in the algorithm utilized to determine if reassembly of the fragments can take place.","modified":"2026-02-04T02:14:35.796421Z","published":"2017-07-05T00:00:00Z","related":["USN-3482-1"],"upstream":["CVE-2016-10396"],"references":[{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2016-10396"},{"type":"REPORT","url":"http://cvsweb.netbsd.org/bsdweb.cgi/src/crypto/dist/ipsec-tools/src/racoon/isakmp_frag.c.diff?r1=1.5&r2=1.5.36.1"},{"type":"REPORT","url":"http://cvsweb.netbsd.org/bsdweb.cgi/src/crypto/dist/ipsec-tools/src/racoon/isakmp_frag.c?only_with_tag=MAIN"},{"type":"REPORT","url":"https://gnats.netbsd.org/cgi-bin/query-pr-single.pl?number=51682"},{"type":"ADVISORY","url":"https://ubuntu.com/security/notices/USN-3482-1"},{"type":"REPORT","url":"https://www.cve.org/CVERecord?id=CVE-2016-10396"}],"affected":[{"package":{"name":"ipsec-tools","ecosystem":"Ubuntu:16.04:LTS","purl":"pkg:deb/ubuntu/ipsec-tools@1:0.8.2+20140711-5?arch=source&distro=xenial"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["1:0.8.2+20140711-4","1:0.8.2+20140711-5"],"ecosystem_specific":{"binaries":[{"binary_version":"1:0.8.2+20140711-5","binary_name":"ipsec-tools"},{"binary_version":"1:0.8.2+20140711-5","binary_name":"racoon"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2016/UBUNTU-CVE-2016-10396.json"}},{"package":{"name":"ipsec-tools","ecosystem":"Ubuntu:18.04:LTS","purl":"pkg:deb/ubuntu/ipsec-tools@1:0.8.2+20140711-10?arch=source&distro=bionic"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1:0.8.2+20140711-10"}]}],"ecosystem_specific":{"binaries":[{"binary_version":"1:0.8.2+20140711-10","binary_name":"ipsec-tools"},{"binary_version":"1:0.8.2+20140711-10","binary_name":"racoon"}],"availability":"No subscription required"},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2016/UBUNTU-CVE-2016-10396.json"}}],"schema_version":"1.7.3","severity":[{"type":"CVSS_V3","score":"CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H"},{"type":"Ubuntu","score":"medium"}]}