{"schemaVersion":3,"id":"CVE-2016-1951","aliases":["UBUNTU-CVE-2016-1951","USN-3028-1","DEBIAN-CVE-2016-1951","DLA-513-1","DSA-3687-1"],"status":"published","duplicateOf":null,"title":null,"description":"Multiple integer overflows in io/prprf.c in Mozilla Netscape Portable Runtime (NSPR) before 4.12 allow remote attackers to cause a denial of service (buffer overflow) or possibly have unspecified other impact via a long string to a PR_*printf function.","dates":{"published":"2016-08-07T19:00:00.000Z","modified":"2024-08-05T23:10:40.392Z","reserved":null,"kevAdded":[],"kevDue":[]},"cvss":{"headline":{"score":8.6,"severity":"high","version":"3.0","versionLabel":"v3.0","source":"NVD","vector":"CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:H","computed":false,"selection":"backend-summary"},"metrics":[{"version":"3.0","versionLabel":"v3.0","source":"NVD","score":8.6,"severity":"high","vector":"CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:H","exploitability":null,"impact":null,"computed":false},{"version":"2.0","versionLabel":"v2.0","source":"NVD","score":7.5,"severity":"high","vector":"AV:N/AC:L/Au:N/C:P/I:P/A:P","exploitability":null,"impact":null,"computed":false},{"version":"3.0","versionLabel":"v3.0","source":"OSV · Ubuntu","score":8.6,"severity":"high","vector":"CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:H","exploitability":10,"impact":7.8,"computed":true},{"version":"3.0","versionLabel":"v3.0","source":"OSV · Debian","score":8.6,"severity":"high","vector":"CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:H","exploitability":10,"impact":7.8,"computed":true}]},"epss":{"probability":0.03126,"percentile":0.87675,"severity":"low","asOf":"2026-10-19T00:00:00.000Z","change":{"pp":0.4100000000000003,"baselineDate":"2026-09-19T00:00:00.000Z","baselineScore":0.02716},"history":[{"date":"2026-09-14T00:00:00.000Z","score":0.02716,"percentile":null},{"date":"2026-09-15T00:00:00.000Z","score":0.02716,"percentile":null},{"date":"2026-09-16T00:00:00.000Z","score":0.02716,"percentile":null},{"date":"2026-09-17T00:00:00.000Z","score":0.02716,"percentile":null},{"date":"2026-09-18T00:00:00.000Z","score":0.02716,"percentile":null},{"date":"2026-09-19T00:00:00.000Z","score":0.02716,"percentile":null},{"date":"2026-09-20T00:00:00.000Z","score":0.02716,"percentile":null},{"date":"2026-09-21T00:00:00.000Z","score":0.02713,"percentile":null},{"date":"2026-09-22T00:00:00.000Z","score":0.02716,"percentile":null},{"date":"2026-09-23T00:00:00.000Z","score":0.03126,"percentile":null},{"date":"2026-09-24T00:00:00.000Z","score":0.03126,"percentile":null},{"date":"2026-09-25T00:00:00.000Z","score":0.03126,"percentile":null},{"date":"2026-09-26T00:00:00.000Z","score":0.03126,"percentile":null},{"date":"2026-09-27T00:00:00.000Z","score":0.03126,"percentile":null},{"date":"2026-09-28T00:00:00.000Z","score":0.03126,"percentile":null},{"date":"2026-09-29T00:00:00.000Z","score":0.03126,"percentile":null},{"date":"2026-09-30T00:00:00.000Z","score":0.03126,"percentile":null},{"date":"2026-10-01T00:00:00.000Z","score":0.03126,"percentile":null},{"date":"2026-10-02T00:00:00.000Z","score":0.03126,"percentile":null},{"date":"2026-10-03T00:00:00.000Z","score":0.03126,"percentile":null},{"date":"2026-10-04T00:00:00.000Z","score":0.03126,"percentile":null},{"date":"2026-10-05T00:00:00.000Z","score":0.03126,"percentile":null},{"date":"2026-10-06T00:00:00.000Z","score":0.03126,"percentile":null},{"date":"2026-10-07T00:00:00.000Z","score":0.03126,"percentile":null},{"date":"2026-10-08T00:00:00.000Z","score":0.03126,"percentile":null},{"date":"2026-10-09T00:00:00.000Z","score":0.03126,"percentile":null},{"date":"2026-10-10T00:00:00.000Z","score":0.03126,"percentile":null},{"date":"2026-10-11T00:00:00.000Z","score":0.03126,"percentile":null},{"date":"2026-10-12T00:00:00.000Z","score":0.03126,"percentile":null},{"date":"2026-10-13T00:00:00.000Z","score":0.03126,"percentile":null},{"date":"2026-10-14T00:00:00.000Z","score":0.03126,"percentile":null},{"date":"2026-10-15T00:00:00.000Z","score":0.03126,"percentile":null},{"date":"2026-10-16T00:00:00.000Z","score":0.03126,"percentile":null},{"date":"2026-10-17T00:00:00.000Z","score":0.03126,"percentile":null},{"date":"2026-10-18T00:00:00.000Z","score":0.03126,"percentile":null},{"date":"2026-10-19T00:00:00.000Z","score":0.03126,"percentile":0.87675}],"last30":[{"date":"2026-09-19T00:00:00.000Z","score":0.02716,"percentile":null},{"date":"2026-09-20T00:00:00.000Z","score":0.02716,"percentile":null},{"date":"2026-09-21T00:00:00.000Z","score":0.02713,"percentile":null},{"date":"2026-09-22T00:00:00.000Z","score":0.02716,"percentile":null},{"date":"2026-09-23T00:00:00.000Z","score":0.03126,"percentile":null},{"date":"2026-09-24T00:00:00.000Z","score":0.03126,"percentile":null},{"date":"2026-09-25T00:00:00.000Z","score":0.03126,"percentile":null},{"date":"2026-09-26T00:00:00.000Z","score":0.03126,"percentile":null},{"date":"2026-09-27T00:00:00.000Z","score":0.03126,"percentile":null},{"date":"2026-09-28T00:00:00.000Z","score":0.03126,"percentile":null},{"date":"2026-09-29T00:00:00.000Z","score":0.03126,"percentile":null},{"date":"2026-09-30T00:00:00.000Z","score":0.03126,"percentile":null},{"date":"2026-10-01T00:00:00.000Z","score":0.03126,"percentile":null},{"date":"2026-10-02T00:00:00.000Z","score":0.03126,"percentile":null},{"date":"2026-10-03T00:00:00.000Z","score":0.03126,"percentile":null},{"date":"2026-10-04T00:00:00.000Z","score":0.03126,"percentile":null},{"date":"2026-10-05T00:00:00.000Z","score":0.03126,"percentile":null},{"date":"2026-10-06T00:00:00.000Z","score":0.03126,"percentile":null},{"date":"2026-10-07T00:00:00.000Z","score":0.03126,"percentile":null},{"date":"2026-10-08T00:00:00.000Z","score":0.03126,"percentile":null},{"date":"2026-10-09T00:00:00.000Z","score":0.03126,"percentile":null},{"date":"2026-10-10T00:00:00.000Z","score":0.03126,"percentile":null},{"date":"2026-10-11T00:00:00.000Z","score":0.03126,"percentile":null},{"date":"2026-10-12T00:00:00.000Z","score":0.03126,"percentile":null},{"date":"2026-10-13T00:00:00.000Z","score":0.03126,"percentile":null},{"date":"2026-10-14T00:00:00.000Z","score":0.03126,"percentile":null},{"date":"2026-10-15T00:00:00.000Z","score":0.03126,"percentile":null},{"date":"2026-10-16T00:00:00.000Z","score":0.03126,"percentile":null},{"date":"2026-10-17T00:00:00.000Z","score":0.03126,"percentile":null},{"date":"2026-10-18T00:00:00.000Z","score":0.03126,"percentile":null},{"date":"2026-10-19T00:00:00.000Z","score":0.03126,"percentile":0.87675}]},"kev":{"state":"not-listed","entries":[],"listedCount":0,"totalCatalogs":3,"catalogs":[{"source":"cisa","label":"CISA","listed":false,"entry":null},{"source":"enisa","label":"ENISA","listed":false,"entry":null},{"source":"circl","label":"CIRCL","listed":false,"entry":null}]},"ransomware":{"state":"none-recorded","sources":[]},"exploits":[],"exploitCount":0,"weaknesses":[{"id":"CWE-190","name":"Integer 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":"debian","product":"firefox-esr","name":"firefox-esr","label":"firefox-esr","ecosystem":"Debian","cpePart":null,"purl":"pkg:deb/debian/firefox-esr","purlType":"deb","versions":[{"text":"< 45.0esr-1","noFixRecorded":false,"fixedIn":null}],"versionsText":"< 45.0esr-1","eol":null,"hubHref":null},{"vendor":"debian","product":"nspr","name":"nspr","label":"nspr","ecosystem":"Debian","cpePart":null,"purl":"pkg:deb/debian/nspr","purlType":"deb","versions":[{"text":"< 2:4.12-1","noFixRecorded":false,"fixedIn":null},{"text":"< 2:4.12-1+debu8u1","noFixRecorded":false,"fixedIn":null},{"text":"< 2:4.9.2-1+deb7u4","noFixRecorded":false,"fixedIn":null}],"versionsText":"< 2:4.12-1 | < 2:4.12-1+debu8u1 | < 2:4.9.2-1+deb7u4","eol":null,"hubHref":null},{"vendor":"ubuntu","product":"nspr","name":"nspr","label":"nspr","ecosystem":"Ubuntu","cpePart":null,"purl":"pkg:deb/ubuntu/nspr","purlType":"deb","versions":[{"text":"< 2:4.12-0ubuntu0.14.04.1","noFixRecorded":false,"fixedIn":null},{"text":"< 2:4.12-0ubuntu0.16.04.1","noFixRecorded":false,"fixedIn":null}],"versionsText":"< 2:4.12-0ubuntu0.14.04.1 | < 2:4.12-0ubuntu0.16.04.1","eol":null,"hubHref":null},{"vendor":"ubuntu","product":"thunderbird","name":"thunderbird","label":"thunderbird","ecosystem":"Ubuntu","cpePart":null,"purl":"pkg:deb/ubuntu/thunderbird","purlType":"deb","versions":[{"text":"< 1:45.2.0+build1-0ubuntu0.14.04.3","noFixRecorded":false,"fixedIn":null},{"text":"< 1:45.2.0+build1-0ubuntu0.16.04.1","noFixRecorded":false,"fixedIn":null}],"versionsText":"< 1:45.2.0+build1-0ubuntu0.14.04.3 | < 1:45.2.0+build1-0ubuntu0.16.04.1","eol":null,"hubHref":null},{"vendor":"mozilla","product":"netscape_portable_runtime","name":"netscape portable runtime","label":"netscape_portable_runtime","ecosystem":null,"cpePart":"a","purl":null,"purlType":null,"versions":[{"text":"≤ 4.11","noFixRecorded":false,"fixedIn":null}],"versionsText":"≤ 4.11","eol":null,"hubHref":"/vendor/mozilla/netscape_portable_runtime"}],"affectedCount":5,"eol":{"hasEol":false,"count":0},"references":[{"url":"https://groups.google.com/forum/message/raw?msg=mozilla.dev.tech.nspr/dV4MyMsg6jw/hhWcXOgJDQAJ","label":"groups.google.com/forum/message/raw?msg=mozilla.dev.tech.nspr/dV4MyMsg6jw/hhWcXOgJDQAJ","hostname":"groups.google.com","tags":["Mailing List","X Refsource MLIST"]},{"url":"http://www.securityfocus.com/bid/92385","label":"www.securityfocus.com/bid/92385","hostname":"www.securityfocus.com","tags":["VDB Entry","X Refsource BID"]},{"url":"http://www.securitytracker.com/id/1036590","label":"www.securitytracker.com/id/1036590","hostname":"www.securitytracker.com","tags":["VDB Entry","X Refsource SECTRACK"]},{"url":"https://hg.mozilla.org/projects/nspr/rev/96381e3aaae2","label":"hg.mozilla.org/projects/nspr/rev/96381e3aaae2","hostname":"hg.mozilla.org","tags":["X Refsource CONFIRM"]},{"url":"https://bugzilla.mozilla.org/show_bug.cgi?id=1174015","label":"bugzilla.mozilla.org/show_bug.cgi?id=1174015","hostname":"bugzilla.mozilla.org","tags":["X Refsource CONFIRM","Issue Tracking"]},{"url":"http://www.ubuntu.com/usn/USN-3023-1","label":"www.ubuntu.com/usn/USN-3023-1","hostname":"www.ubuntu.com","tags":["Vendor Advisory","X Refsource UBUNTU"]},{"url":"https://ubuntu.com/security/CVE-2016-1951","label":"ubuntu.com/security/CVE-2016-1951","hostname":"ubuntu.com","tags":["REPORT"]},{"url":"https://groups.google.com/forum/#!topic/mozilla.dev.tech.nspr/dV4MyMsg6jw","label":"groups.google.com/forum/","hostname":"groups.google.com","tags":["REPORT"]},{"url":"https://ubuntu.com/security/notices/USN-3028-1","label":"ubuntu.com/security/notices/USN-3028-1","hostname":"ubuntu.com","tags":["Advisory"]},{"url":"https://ubuntu.com/security/notices/USN-3023-1","label":"ubuntu.com/security/notices/USN-3023-1","hostname":"ubuntu.com","tags":["Advisory"]},{"url":"https://www.cve.org/CVERecord?id=CVE-2016-1951","label":"www.cve.org/CVERecord?id=CVE-2016-1951","hostname":"www.cve.org","tags":["REPORT"]},{"url":"https://security-tracker.debian.org/tracker/CVE-2016-1951","label":"security-tracker.debian.org/tracker/CVE-2016-1951","hostname":"security-tracker.debian.org","tags":["Advisory"]}],"lineage":{"upstream":[],"downstream":["USN-3023-1"],"duplicates":[],"related":["USN-3023-1"]},"timeline":[{"kind":"published","date":"2016-08-07T19:00:00.000Z","label":"Published","detail":"Vulnerability first disclosed.","source":null},{"kind":"modified","date":"2024-08-05T23:10:40.392Z","label":"Last modified","detail":"Vulnerability information updated.","source":null}],"risk":{"score":35,"level":"medium","profile":"Default","thresholds":{"critical":75,"high":50,"medium":25,"low":10}},"meta":{"dataAsOf":"2026-10-19T17:24:38.826Z","stale":false,"partial":false}}