{"schemaVersion":3,"id":"CVE-2018-17157","aliases":[],"status":"published","duplicateOf":null,"title":null,"description":"In FreeBSD before 11.2-STABLE(r340854) and 11.2-RELEASE-p5, an integer overflow error when handling opcodes can cause memory corruption by sending a specially crafted NFSv4 request. Unprivileged remote users with access to the NFS server may be able to execute arbitrary code.","dates":{"published":"2018-12-04T15:00:00.000Z","modified":"2024-08-05T10:39:59.601Z","reserved":null,"kevAdded":[],"kevDue":[]},"cvss":{"headline":{"score":10,"severity":"high","version":"2.0","versionLabel":"v2.0","source":"NVD","vector":"AV:N/AC:L/Au:N/C:C/I:C/A:C","computed":false,"selection":"backend-summary"},"metrics":[{"version":"3.0","versionLabel":"v3.0","source":"NVD","score":9.8,"severity":"critical","vector":"CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","exploitability":null,"impact":null,"computed":false},{"version":"2.0","versionLabel":"v2.0","source":"NVD","score":10,"severity":"high","vector":"AV:N/AC:L/Au:N/C:C/I:C/A:C","exploitability":null,"impact":null,"computed":false}]},"epss":{"probability":0.24168,"percentile":0.97839,"severity":"high","asOf":"2026-10-20T00:00:00.000Z","change":{"pp":0,"baselineDate":"2026-09-20T00:00:00.000Z","baselineScore":0.24168},"history":[{"date":"2026-09-14T00:00:00.000Z","score":0.24168,"percentile":null},{"date":"2026-09-15T00:00:00.000Z","score":0.24168,"percentile":null},{"date":"2026-09-16T00:00:00.000Z","score":0.24168,"percentile":null},{"date":"2026-09-17T00:00:00.000Z","score":0.24168,"percentile":null},{"date":"2026-09-18T00:00:00.000Z","score":0.24168,"percentile":null},{"date":"2026-09-19T00:00:00.000Z","score":0.24168,"percentile":null},{"date":"2026-09-20T00:00:00.000Z","score":0.24168,"percentile":null},{"date":"2026-09-21T00:00:00.000Z","score":0.20572,"percentile":null},{"date":"2026-09-22T00:00:00.000Z","score":0.24168,"percentile":null},{"date":"2026-09-23T00:00:00.000Z","score":0.24168,"percentile":null},{"date":"2026-09-24T00:00:00.000Z","score":0.24168,"percentile":null},{"date":"2026-09-25T00:00:00.000Z","score":0.24168,"percentile":null},{"date":"2026-09-26T00:00:00.000Z","score":0.24168,"percentile":null},{"date":"2026-09-27T00:00:00.000Z","score":0.24168,"percentile":null},{"date":"2026-09-28T00:00:00.000Z","score":0.24168,"percentile":null},{"date":"2026-09-29T00:00:00.000Z","score":0.24168,"percentile":null},{"date":"2026-09-30T00:00:00.000Z","score":0.24168,"percentile":null},{"date":"2026-10-01T00:00:00.000Z","score":0.24168,"percentile":null},{"date":"2026-10-02T00:00:00.000Z","score":0.24168,"percentile":null},{"date":"2026-10-03T00:00:00.000Z","score":0.24168,"percentile":null},{"date":"2026-10-04T00:00:00.000Z","score":0.24168,"percentile":null},{"date":"2026-10-05T00:00:00.000Z","score":0.24168,"percentile":null},{"date":"2026-10-06T00:00:00.000Z","score":0.24168,"percentile":null},{"date":"2026-10-07T00:00:00.000Z","score":0.24168,"percentile":null},{"date":"2026-10-08T00:00:00.000Z","score":0.24168,"percentile":null},{"date":"2026-10-09T00:00:00.000Z","score":0.24168,"percentile":null},{"date":"2026-10-10T00:00:00.000Z","score":0.24168,"percentile":null},{"date":"2026-10-11T00:00:00.000Z","score":0.24168,"percentile":null},{"date":"2026-10-12T00:00:00.000Z","score":0.24168,"percentile":null},{"date":"2026-10-13T00:00:00.000Z","score":0.24168,"percentile":null},{"date":"2026-10-14T00:00:00.000Z","score":0.24168,"percentile":null},{"date":"2026-10-15T00:00:00.000Z","score":0.24168,"percentile":null},{"date":"2026-10-16T00:00:00.000Z","score":0.24168,"percentile":null},{"date":"2026-10-17T00:00:00.000Z","score":0.24168,"percentile":null},{"date":"2026-10-18T00:00:00.000Z","score":0.24168,"percentile":null},{"date":"2026-10-19T00:00:00.000Z","score":0.24168,"percentile":null},{"date":"2026-10-20T00:00:00.000Z","score":0.24168,"percentile":0.97839}],"last30":[{"date":"2026-09-20T00:00:00.000Z","score":0.24168,"percentile":null},{"date":"2026-09-21T00:00:00.000Z","score":0.20572,"percentile":null},{"date":"2026-09-22T00:00:00.000Z","score":0.24168,"percentile":null},{"date":"2026-09-23T00:00:00.000Z","score":0.24168,"percentile":null},{"date":"2026-09-24T00:00:00.000Z","score":0.24168,"percentile":null},{"date":"2026-09-25T00:00:00.000Z","score":0.24168,"percentile":null},{"date":"2026-09-26T00:00:00.000Z","score":0.24168,"percentile":null},{"date":"2026-09-27T00:00:00.000Z","score":0.24168,"percentile":null},{"date":"2026-09-28T00:00:00.000Z","score":0.24168,"percentile":null},{"date":"2026-09-29T00:00:00.000Z","score":0.24168,"percentile":null},{"date":"2026-09-30T00:00:00.000Z","score":0.24168,"percentile":null},{"date":"2026-10-01T00:00:00.000Z","score":0.24168,"percentile":null},{"date":"2026-10-02T00:00:00.000Z","score":0.24168,"percentile":null},{"date":"2026-10-03T00:00:00.000Z","score":0.24168,"percentile":null},{"date":"2026-10-04T00:00:00.000Z","score":0.24168,"percentile":null},{"date":"2026-10-05T00:00:00.000Z","score":0.24168,"percentile":null},{"date":"2026-10-06T00:00:00.000Z","score":0.24168,"percentile":null},{"date":"2026-10-07T00:00:00.000Z","score":0.24168,"percentile":null},{"date":"2026-10-08T00:00:00.000Z","score":0.24168,"percentile":null},{"date":"2026-10-09T00:00:00.000Z","score":0.24168,"percentile":null},{"date":"2026-10-10T00:00:00.000Z","score":0.24168,"percentile":null},{"date":"2026-10-1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Overflow or Wraparound","description":"The product performs a calculation that can\n         produce an integer overflow or wraparound when the logic\n         assumes that the resulting value will always be larger than\n         the original value. This occurs when an integer value is\n         incremented to a value that is too large to store in the\n         associated representation. When this occurs, the value may\n         become a very small or negative number.","type":"weakness","status":"Stable","abstraction":"Base","likelihoodOfExploit":"Medium","url":"https://cwe.mitre.org/data/definitions/190.html"}],"affected":[{"vendor":"freebsd","product":"freebsd","name":"freebsd","label":"freebsd","ecosystem":null,"cpePart":"o","purl":null,"purlType":null,"versions":[{"text":"FreeBSD 11.2 before 11.2-RELEASE-p5","noFixRecorded":false,"fixedIn":null},{"text":"< 11.2","noFixRecorded":false,"fixedIn":null},{"text":"11.2:p4","noFixRecorded":false,"fixedIn":null}],"versionsText":"FreeBSD 11.2 before 11.2-RELEASE-p5 | < 11.2 | 11.2:p4","eol":{"isEol":true,"eolDate":"2021-09-30T00:00:00.000Z","matchMethod":"cpe","cycle":{"name":"11","label":"stable/11","eolFrom":"2021-09-30T00:00:00.000Z","isLts":false,"isMaintained":false,"latestVersion":null},"product":{"name":"freebsd","label":"FreeBSD","category":"os"}},"hubHref":"/vendor/freebsd/freebsd"}],"affectedCount":1,"eol":{"hasEol":true,"count":1},"references":[{"url":"http://www.securityfocus.com/bid/106192","label":"www.securityfocus.com/bid/106192","hostname":"www.securityfocus.com","tags":["VDB Entry","X Refsource BID","Third Party Advisory"]},{"url":"https://secuniaresearch.flexerasoftware.com/secunia_research/2018-25/","label":"secuniaresearch.flexerasoftware.com/secunia_research/2018-25/","hostname":"secuniaresearch.flexerasoftware.com","tags":["X Refsource MISC","Third Party Advisory"]},{"url":"https://security.freebsd.org/advisories/FreeBSD-SA-18:13.nfs.asc","label":"security.freebsd.org/advisories/FreeBSD-SA-18:13.nfs.asc","hostname":"security.freebsd.org","tags":["Vendor Advisory","X Refsource FREEBSD","Patch"]},{"url":"http://www.securitytracker.com/id/1042164","label":"www.securitytracker.com/id/1042164","hostname":"www.securitytracker.com","tags":["VDB Entry","X Refsource SECTRACK","Patch","Third Party Advisory"]}],"lineage":{"upstream":[],"downstream":[],"duplicates":[],"related":[]},"timeline":[{"kind":"published","date":"2018-12-04T15:00:00.000Z","label":"Published","detail":"Vulnerability first disclosed.","source":null},{"kind":"modified","date":"2024-08-05T10:39:59.601Z","label":"Last modified","detail":"Vulnerability information updated.","source":null}],"risk":{"score":70,"level":"high","profile":"Default","thresholds":{"critical":75,"high":50,"medium":25,"low":10}},"meta":{"dataAsOf":"2026-10-20T22:43:09.655Z","stale":false,"partial":false}}