{"id":"CVE-2017-17450","url":"https://www.cyber-defence.io/tools/cve/CVE-2017-17450","generatedAt":"2026-10-29T00:38:20.163Z","title":"net/netfilter/xt_osf.c in the Linux kernel through 4.14.4 does not require the CAP_NET_ADMIN capability for add_callback and remove_callback operations, which allows local users to bypass intended access restrictions because the xt_osf_fingers data…","description":"net/netfilter/xt_osf.c in the Linux kernel through 4.14.4 does not require the CAP_NET_ADMIN capability for add_callback and remove_callback operations, which allows local users to bypass intended access restrictions because the xt_osf_fingers data structure is shared across all net namespaces.","published":"2017-12-07T00:29:00.000Z","lastModified":"2026-06-17T01:10:49.000Z","status":"Modified","sourceIdentifier":"cve@mitre.org","cvss":{"version":"3.0","score":7.8,"severity":"HIGH","vector":"CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H"},"cwe":["CWE-862"],"affected":["linux/linux kernel"],"epss":{"score":0.00406,"percentile":0.34704,"date":"2026-10-27","history":[]},"kev":{"listed":false},"exploits":{"count":0,"verified":false,"firstPublished":null,"source":"Exploit-DB (https://gitlab.com/exploit-database/exploitdb)","entries":[]},"verdict":{"level":"high","text":"High impact if exploited, but EPSS currently rates exploitation as unlikely (0.41%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit."},"changes":[],"references":[{"url":"http://lists.opensuse.org/opensuse-security-announce/2018-01/msg00007.html","source":"cve@mitre.org"},{"url":"http://www.securityfocus.com/bid/102110","tags":["Third Party Advisory","VDB Entry"],"source":"cve@mitre.org"},{"url":"https://lkml.org/lkml/2017/12/5/982","tags":["Third Party Advisory"],"source":"cve@mitre.org"},{"url":"https://usn.ubuntu.com/3583-1/","source":"cve@mitre.org"},{"url":"https://usn.ubuntu.com/3583-2/","source":"cve@mitre.org"},{"url":"https://usn.ubuntu.com/3617-1/","source":"cve@mitre.org"},{"url":"https://usn.ubuntu.com/3617-2/","source":"cve@mitre.org"},{"url":"https://usn.ubuntu.com/3617-3/","source":"cve@mitre.org"},{"url":"https://usn.ubuntu.com/3619-1/","source":"cve@mitre.org"},{"url":"https://usn.ubuntu.com/3619-2/","source":"cve@mitre.org"},{"url":"https://usn.ubuntu.com/3632-1/","source":"cve@mitre.org"},{"url":"https://www.debian.org/security/2017/dsa-4073","source":"cve@mitre.org"},{"url":"https://www.debian.org/security/2018/dsa-4082","source":"cve@mitre.org"},{"url":"http://lists.opensuse.org/opensuse-security-announce/2018-01/msg00007.html","source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"http://www.securityfocus.com/bid/102110","tags":["Third Party Advisory","VDB Entry"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://lkml.org/lkml/2017/12/5/982","tags":["Third Party Advisory"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://usn.ubuntu.com/3583-1/","source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://usn.ubuntu.com/3583-2/","source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://usn.ubuntu.com/3617-1/","source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://usn.ubuntu.com/3617-2/","source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://usn.ubuntu.com/3617-3/","source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://usn.ubuntu.com/3619-1/","source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://usn.ubuntu.com/3619-2/","source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://usn.ubuntu.com/3632-1/","source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://www.debian.org/security/2017/dsa-4073","source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://www.debian.org/security/2018/dsa-4082","source":"af854a3a-2127-422b-91ae-364da2661108"}],"sources":{"nvd":"https://nvd.nist.gov/vuln/detail/CVE-2017-17450","epss":"https://www.first.org/epss/","kev":"https://www.cisa.gov/known-exploited-vulnerabilities-catalog","exploitdb":"https://www.exploit-db.com/"},"licence":"CC BY 4.0 — link back to the CVE Explorer if you publish the results; upstream data remains subject to its own terms."}