{"schemaVersion":3,"id":"CVE-2018-7456","aliases":["ALPINE-CVE-2018-7456","MGASA-2018-0208","RHSA-2019:2051","UBUNTU-CVE-2018-7456","DEBIAN-CVE-2018-7456","DLA-1346-1","DLA-1347-1"],"status":"published","duplicateOf":null,"title":null,"description":"A NULL Pointer Dereference occurs in the function TIFFPrintDirectory in tif_print.c in LibTIFF 3.9.3, 3.9.4, 3.9.5, 3.9.6, 3.9.7, 4.0.0alpha4, 4.0.0alpha5, 4.0.0alpha6, 4.0.0beta7, 4.0.0, 4.0.1, 4.0.2, 4.0.3, 4.0.4, 4.0.4beta, 4.0.5, 4.0.6, 4.0.7, 4.0.8 and 4.0.9 when using the tiffinfo tool to print crafted TIFF information, a different vulnerability than CVE-2017-18013. (This affects an earlier part of the TIFFPrintDirectory function that was not addressed by the CVE-2017-18013 patch.)","dates":{"published":"2018-02-24T06:00:00.000Z","modified":"2024-08-05T06:24:12.048Z","reserved":null,"kevAdded":[],"kevDue":[]},"cvss":{"headline":{"score":6.5,"severity":"medium","version":"3.0","versionLabel":"v3.0","source":"NVD","vector":"CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H","computed":false,"selection":"backend-summary"},"metrics":[{"version":"3.0","versionLabel":"v3.0","source":"NVD","score":6.5,"severity":"medium","vector":"CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H","exploitability":null,"impact":null,"computed":false},{"version":"2.0","versionLabel":"v2.0","source":"NVD","score":4.3,"severity":"medium","vector":"AV:N/AC:M/Au:N/C:N/I:N/A:P","exploitability":null,"impact":null,"computed":false},{"version":"3.0","versionLabel":"v3.0","source":"OSV · Alpine","score":6.5,"severity":"medium","vector":"CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H","exploitability":7.2,"impact":6,"computed":true},{"version":"3.0","versionLabel":"v3.0","source":"OSV · Red hat","score":3.3,"severity":"low","vector":"CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L","exploitability":4.6,"impact":2.3,"computed":true},{"version":"3.0","versionLabel":"v3.0","source":"OSV · Ubuntu","score":6.5,"severity":"medium","vector":"CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H","exploitability":7.2,"impact":6,"computed":true},{"version":"3.0","versionLabel":"v3.0","source":"OSV · Debian","score":6.5,"severity":"medium","vector":"CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H","exploitability":7.2,"impact":6,"computed":true}]},"epss":{"probability":0.02989,"percentile":0.87126,"severity":"low","asOf":"2026-10-19T00:00:00.000Z","change":{"pp":0,"baselineDate":"2026-09-19T00:00:00.000Z","baselineScore":0.02989},"history":[{"date":"2026-09-14T00:00:00.000Z","score":0.02989,"percentile":null},{"date":"2026-09-15T00:00:00.000Z","score":0.02989,"percentile":null},{"date":"2026-09-16T00:00:00.000Z","score":0.02989,"percentile":null},{"date":"2026-09-17T00:00:00.000Z","score":0.02989,"percentile":null},{"date":"2026-09-18T00:00:00.000Z","score":0.02989,"percentile":null},{"date":"2026-09-19T00:00:00.000Z","score":0.02989,"percentile":null},{"date":"2026-09-20T00:00:00.000Z","score":0.02989,"percentile":null},{"date":"2026-09-21T00:00:00.000Z","score":0.03807,"percentile":null},{"date":"2026-09-22T00:00:00.000Z","score":0.02989,"percentile":null},{"date":"2026-09-23T00:00:00.000Z","score":0.02989,"percentile":null},{"date":"2026-09-24T00:00:00.000Z","score":0.02989,"percentile":null},{"date":"2026-09-25T00:00:00.000Z","score":0.02989,"percentile":null},{"date":"2026-09-26T00:00:00.000Z","score":0.02989,"percentile":null},{"date":"2026-09-27T00:00:00.000Z","score":0.02989,"percentile":null},{"date":"2026-09-28T00:00:00.000Z","score":0.02989,"percentile":null},{"date":"2026-09-29T00:00:00.000Z","score":0.02989,"percentile":null},{"date":"2026-09-30T00:00:00.000Z","score":0.02989,"percentile":null},{"date":"2026-10-01T00:00:00.000Z","score":0.02989,"percentile":null},{"date":"2026-10-02T00:00:00.000Z","score":0.02989,"percentile":null},{"date":"2026-10-03T00:00:00.000Z","score":0.02989,"percentile":null},{"date":"2026-10-04T00:00:00.000Z","score":0.02989,"percentile":null},{"date":"2026-10-05T00:00:00.000Z","score":0.02989,"percentile":null},{"date":"2026-10-06T00:00:00.000Z","score":0.02989,"percentile":null},{"date":"2026-10-07T00:00:00.000Z","score":0.02989,"percentile":null},{"date":"2026-10-08T00:00:00.000Z","score":0.02989,"percentile":null},{"date":"2026-10-09T00:00:00.000Z","score":0.02989,"percentile":null},{"date":"2026-10-10T00:00:00.000Z","score":0.02989,"percentile":null},{"date":"2026-10-11T00:00:00.000Z","score":0.02989,"percentile":null},{"date":"2026-10-12T00:00:00.000Z","score":0.02989,"percentile":null},{"date":"2026-10-13T00:00:00.000Z","score":0.02989,"percentile":null},{"date":"2026-10-14T00:00:00.000Z","score":0.02989,"percentile":null},{"date":"2026-10-15T00:00:00.000Z","score":0.02989,"percentile":null},{"date":"2026-10-16T00:00:00.000Z","score":0.02989,"percentile":null},{"date":"2026-10-17T00:00:00.000Z","score":0.02989,"percentile":null},{"date":"2026-10-18T00:00:00.000Z","score":0.02989,"percentile":null},{"date":"2026-10-19T00:00:00.000Z","score":0.02989,"percentile":0.87126}],"last30":[{"date":"2026-09-19T00:00:00.000Z","score":0.02989,"percentile":null},{"date":"2026-09-20T00:00:00.000Z","score":0.02989,"percentile":null},{"date":"2026-09-21T00:00:00.000Z","score":0.03807,"percentile":null},{"date":"2026-09-22T00:00:00.000Z","score":0.02989,"percentile":null},{"date":"2026-09-23T00:00:00.000Z","score":0.02989,"percentile":null},{"date":"2026-09-24T00:00:00.000Z","score":0.02989,"percentile":null},{"date":"2026-09-25T00:00:00.000Z","score":0.02989,"percentile":null},{"date":"2026-09-26T00:00:00.000Z","score":0.02989,"percentile":null},{"date":"2026-09-27T00:00:00.000Z","score":0.02989,"percentile":null},{"date":"2026-09-28T00:00:00.000Z","score":0.02989,"percentile":null},{"date":"2026-09-29T00:00:00.000Z","score":0.02989,"percentile":null},{"date":"2026-09-30T00:00:00.000Z","score":0.02989,"percentile":null},{"date":"2026-10-01T00:00:00.000Z","score":0.02989,"percentile":null},{"date":"2026-10-02T00:00:00.000Z","score":0.02989,"percentile":null},{"date":"2026-10-03T00:00:00.000Z","score":0.02989,"percentile":null},{"date":"2026-10-04T00:00:00.000Z","score":0.02989,"percentile":null},{"date":"2026-10-05T00:00:00.000Z","score":0.02989,"percentile":null},{"date":"2026-10-06T00:00:00.000Z","score":0.02989,"percentile":null},{"date":"2026-10-07T00:00:00.000Z","score":0.02989,"percentile":null},{"date":"2026-10-08T00:00:00.000Z","score":0.02989,"percentile":null},{"date":"2026-10-09T00:00:00.000Z","score":0.02989,"percentile":null},{"date":"2026-10-10T00:00:00.000Z","score":0.02989,"percentile":null},{"date":"2026-10-11T00:00:00.000Z","score":0.02989,"percentile":null},{"date":"2026-10-12T00:00:00.000Z","score":0.02989,"percentile":null},{"date":"2026-10-13T00:00:00.000Z","score":0.02989,"percentile":null},{"date":"2026-10-14T00:00:00.000Z","score":0.02989,"percentile":null},{"date":"2026-10-15T00:00:00.000Z","score":0.02989,"percentile":null},{"date":"2026-10-16T00:00:00.000Z","score":0.02989,"percentile":null},{"date":"2026-10-17T00:00:00.000Z","score":0.02989,"percentile":null},{"date":"2026-10-18T00:00:00.000Z","score":0.02989,"percentile":null},{"date":"2026-10-19T00:00:00.000Z","score":0.02989,"percentile":0.87126}]},"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":[{"id":"GITHUB_XIAOQX_POCS","name":"Pocs","source":"github","url":"https://github.com/xiaoqx/pocs/blob/master/openexr.md","maturity":"poc","reliabilityScore":0.3,"verified":false,"type":null,"platforms":[],"requiresAuth":null,"exploitdb":null,"metasploit":null},{"id":"REF_16CCCC11E4995123","name":"Exploit Reference (bugzilla.maptools.org)","source":"reference","url":"http://bugzilla.maptools.org/show_bug.cgi?id=2778","maturity":"unknown","reliabilityScore":0.2,"verified":false,"type":null,"platforms":[],"requiresAuth":null,"exploitdb":null,"metasploit":null}],"exploitCount":2,"weaknesses":[{"id":"CWE-476","name":"NULL Pointer Dereference","description":"The product dereferences a pointer that it expects to be valid but is NULL.","type":"weakness","status":"Stable","abstraction":"Base","likelihoodOfExploit":"Medium","url":"https://cwe.mitre.org/data/definitions/476.html"}],"affected":[{"vendor":"alpine","product":"tiff","name":"tiff","label":"tiff","ecosystem":"Alpine Linux","cpePart":null,"purl":"pkg:apk/alpine/tiff","purlType":"apk","versions":[{"text":"< 4.0.9-r4","noFixRecorded":false,"fixedIn":null},{"text":"< 4.0.9-r3","noFixRecorded":false,"fixedIn":null}],"versionsText":"< 4.0.9-r4 | < 4.0.9-r3","eol":null,"hubHref":null},{"vendor":"canonical","product":"ubuntu_linux","name":"ubuntu linux","label":"ubuntu_linux","ecosystem":null,"cpePart":"o","purl":null,"purlType":null,"versions":[{"text":"14.04","noFixRecorded":false,"fixedIn":null},{"text":"16.04","noFixRecorded":false,"fixedIn":null},{"text":"18.04","noFixRecorded":false,"fixedIn":null},{"text":"18.10","noFixRecorded":false,"fixedIn":null}],"versionsText":"14.04 | 16.04 | 18.04 | 18.10","eol":{"isEol":true,"eolDate":"2019-04-02T00:00:00.000Z","matchMethod":"cpe","cycle":{"name":"14.04","label":"14.04 'Trusty Tahr' (LTS)","eolFrom":"2019-04-02T00:00:00.000Z","isLts":true,"isMaintained":false,"latestVersion":"14.04.6"},"product":{"name":"ubuntu","label":"Ubuntu","category":"os"}},"hubHref":"/vendor/canonical/ubuntu_linux"},{"vendor":"debian","product":"tiff","name":"tiff","label":"tiff","ecosystem":"Debian","cpePart":null,"purl":"pkg:deb/debian/tiff","purlType":"deb","versions":[{"text":"< 4.0.9-5","noFixRecorded":false,"fixedIn":null},{"text":"< 4.0.2-6+deb7u19","noFixRecorded":false,"fixedIn":null}],"versionsText":"< 4.0.9-5 | < 4.0.2-6+deb7u19","eol":null,"hubHref":null},{"vendor":"debian","product":"tiff3","name":"tiff3","label":"tiff3","ecosystem":"Debian","cpePart":null,"purl":"pkg:deb/debian/tiff3","purlType":"deb","versions":[{"text":"< 3.9.6-11+deb7u10","noFixRecorded":false,"fixedIn":null}],"versionsText":"< 3.9.6-11+deb7u10","eol":null,"hubHref":null},{"vendor":"ubuntu","product":"tiff","name":"tiff","label":"tiff","ecosystem":"Ubuntu","cpePart":null,"purl":"pkg:deb/ubuntu/tiff","purlType":"deb","versions":[{"text":"< 4.0.3-7ubuntu0.10","noFixRecorded":false,"fixedIn":null},{"text":"< 4.0.6-1ubuntu0.5","noFixRecorded":false,"fixedIn":null}],"versionsText":"< 4.0.3-7ubuntu0.10 | < 4.0.6-1ubuntu0.5","eol":null,"hubHref":null},{"vendor":"debian","product":"debian_linux","name":"debian linux","label":"debian_linux","ecosystem":null,"cpePart":"o","purl":null,"purlType":null,"versions":[{"text":"7.0","noFixRecorded":false,"fixedIn":null},{"text":"8.0","noFixRecorded":false,"fixedIn":null},{"text":"9.0","noFixRecorded":false,"fixedIn":null}],"versionsText":"7.0 | 8.0 | 9.0","eol":{"isEol":true,"eolDate":"2018-05-31T00:00:00.000Z","matchMethod":"cpe","cycle":{"name":"7","label":"7 (Wheezy)","eolFrom":"2018-05-31T00:00:00.000Z","isLts":false,"isMaintained":false,"latestVersion":"7.11"},"product":{"name":"debian","label":"Debian","category":"os"}},"hubHref":"/vendor/debian/debian_linux"},{"vendor":"libtiff","product":"libtiff","name":"libtiff","label":"libtiff","ecosystem":null,"cpePart":"a","purl":null,"purlType":null,"versions":[{"text":"4.0.9","noFixRecorded":false,"fixedIn":null}],"versionsText":"4.0.9","eol":null,"hubHref":"/vendor/libtiff/libtiff"},{"vendor":"mageia","product":"libtiff","name":"libtiff","label":"libtiff","ecosystem":"Mageia","cpePart":null,"purl":"pkg:rpm/mageia/libtiff","purlType":"rpm","versions":[{"text":"< 4.0.9-1.3.mga5","noFixRecorded":false,"fixedIn":null}],"versionsText":"< 4.0.9-1.3.mga5","eol":null,"hubHref":null},{"vendor":"mageia","product":"libtiff","name":"libtiff","label":"libtiff","ecosystem":"Mageia","cpePart":null,"purl":"pkg:rpm/mageia/libtiff","purlType":"rpm","versions":[{"text":"< 4.0.9-1.3.mga6","noFixRecorded":false,"fixedIn":null}],"versionsText":"< 4.0.9-1.3.mga6","eol":null,"hubHref":null},{"vendor":"redhat","product":"compat-libtiff3","name":"compat-libtiff3","label":"compat-libtiff3","ecosystem":"Red Hat","cpePart":null,"purl":"pkg:rpm/redhat/compat-libtiff3","purlType":"rpm","versions":[{"text":"< 0:3.9.4-12.el7","noFixRecorded":false,"fixedIn":null}],"versionsText":"< 0:3.9.4-12.el7","eol":null,"hubHref":null},{"vendor":"redhat","product":"compat-libtiff3-debuginfo","name":"compat-libtiff3-debuginfo","label":"compat-libtiff3-debuginfo","ecosystem":"Red Hat","cpePart":null,"purl":"pkg:rpm/redhat/compat-libtiff3-debuginfo","purlType":"rpm","versions":[{"text":"< 0:3.9.4-12.el7","noFixRecorded":false,"fixedIn":null}],"versionsText":"< 0:3.9.4-12.el7","eol":null,"hubHref":null}],"affectedCount":11,"eol":{"hasEol":true,"count":2},"references":[{"url":"https://lists.debian.org/debian-lts-announce/2018/04/msg00011.html","label":"lists.debian.org/debian-lts-announce/2018/04/msg00011.html","hostname":"lists.debian.org","tags":["Mailing List","X Refsource MLIST","Third Party Advisory"]},{"url":"https://usn.ubuntu.com/3864-1/","label":"usn.ubuntu.com/3864-1/","hostname":"usn.ubuntu.com","tags":["Vendor Advisory","X Refsource UBUNTU","Third Party Advisory"]},{"url":"https://www.debian.org/security/2018/dsa-4349","label":"www.debian.org/security/2018/dsa-4349","hostname":"www.debian.org","tags":["Vendor Advisory","X Refsource DEBIAN","Third Party Advisory"]},{"url":"https://github.com/xiaoqx/pocs/tree/master/libtiff","label":"github.com/xiaoqx/pocs/tree/master/libtiff","hostname":"github.com","tags":["X Refsource MISC","Exploit","Third Party Advisory","REPORT"]},{"url":"http://bugzilla.maptools.org/show_bug.cgi?id=2778","label":"bugzilla.maptools.org/show_bug.cgi?id=2778","hostname":"bugzilla.maptools.org","tags":["X Refsource MISC","Exploit","Issue Tracking","Third Party Advisory"]},{"url":"https://lists.debian.org/debian-lts-announce/2018/07/msg00002.html","label":"lists.debian.org/debian-lts-announce/2018/07/msg00002.html","hostname":"lists.debian.org","tags":["Mailing List","X Refsource MLIST","Third Party Advisory"]},{"url":"https://lists.debian.org/debian-lts-announce/2018/04/msg00010.html","label":"lists.debian.org/debian-lts-announce/2018/04/msg00010.html","hostname":"lists.debian.org","tags":["Mailing List","X Refsource MLIST","Third Party Advisory"]},{"url":"https://gitlab.com/libtiff/libtiff/commit/be4c85b16e8801a16eec25e80eb9f3dd6a96731b","label":"gitlab.com/libtiff/libtiff/commit/be4c85b16e8801a16eec25e80eb9f3dd6a96731b","hostname":"gitlab.com","tags":["X Refsource CONFIRM","Patch","Third Party Advisory"]},{"url":"https://access.redhat.com/errata/RHSA-2019:2051","label":"access.redhat.com/errata/RHSA-2019:2051","hostname":"access.redhat.com","tags":["Vendor Advisory","X Refsource REDHAT","Advisory"]},{"url":"https://access.redhat.com/errata/RHSA-2019:2053","label":"access.redhat.com/errata/RHSA-2019:2053","hostname":"access.redhat.com","tags":["Vendor Advisory","X Refsource REDHAT"]},{"url":"https://security.alpinelinux.org/vuln/CVE-2018-7456","label":"security.alpinelinux.org/vuln/CVE-2018-7456","hostname":"security.alpinelinux.org","tags":["Advisory"]},{"url":"https://advisories.mageia.org/MGASA-2018-0208.html","label":"advisories.mageia.org/MGASA-2018-0208.html","hostname":"advisories.mageia.org","tags":["Advisory"]},{"url":"https://bugs.mageia.org/show_bug.cgi?id=22920","label":"bugs.mageia.org/show_bug.cgi?id=22920","hostname":"bugs.mageia.org","tags":["REPORT"]},{"url":"https://access.redhat.com/security/updates/classification/#low","label":"access.redhat.com/security/updates/classification/","hostname":"access.redhat.com","tags":["ARTICLE"]},{"url":"https://access.redhat.com/documentation/en-us/red_hat_enterprise_linux/7/html-single/7.7_release_notes/index","label":"access.redhat.com/documentation/en-us/red_hat_enterprise_linux/7/html-single/7.7_release_notes/index","hostname":"access.redhat.com","tags":["ARTICLE"]},{"url":"https://bugzilla.redhat.com/show_bug.cgi?id=1556708","label":"bugzilla.redhat.com/show_bug.cgi?id=1556708","hostname":"bugzilla.redhat.com","tags":["REPORT"]},{"url":"https://security.access.redhat.com/data/csaf/v2/advisories/2019/rhsa-2019_2051.json","label":"security.access.redhat.com/data/csaf/v2/advisories/2019/rhsa-2019_2051.json","hostname":"security.access.redhat.com","tags":["Advisory"]},{"url":"https://access.redhat.com/security/cve/CVE-2018-7456","label":"access.redhat.com/security/cve/CVE-2018-7456","hostname":"access.redhat.com","tags":["REPORT"]},{"url":"https://www.cve.org/CVERecord?id=CVE-2018-7456","label":"www.cve.org/CVERecord?id=CVE-2018-7456","hostname":"www.cve.org","tags":["Advisory","REPORT"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2018-7456","label":"nvd.nist.gov/vuln/detail/CVE-2018-7456","hostname":"nvd.nist.gov","tags":["Advisory"]},{"url":"https://ubuntu.com/security/CVE-2018-7456","label":"ubuntu.com/security/CVE-2018-7456","hostname":"ubuntu.com","tags":["REPORT"]},{"url":"https://ubuntu.com/security/notices/USN-3864-1","label":"ubuntu.com/security/notices/USN-3864-1","hostname":"ubuntu.com","tags":["Advisory"]},{"url":"https://security-tracker.debian.org/tracker/CVE-2018-7456","label":"security-tracker.debian.org/tracker/CVE-2018-7456","hostname":"security-tracker.debian.org","tags":["Advisory"]}],"lineage":{"upstream":[],"downstream":["DLA-1411-1","DSA-4349-1","OPENSUSE-SU-2024:11461-1","OPENSUSE-SU-2026:20995-1","RHSA-2019:2053","SUSE-SU-2018:1826-1","SUSE-SU-2018:1835-1","SUSE-SU-2018:1889-1","SUSE-SU-2026:22234-1","SUSE-SU-2026:22306-1","USN-3864-1"],"duplicates":[],"related":["OPENSUSE-SU-2024:11461-1","OPENSUSE-SU-2026:20995-1","SUSE-SU-2018:1826-1","SUSE-SU-2018:1835-1","SUSE-SU-2018:1889-1","SUSE-SU-2026:22234-1","SUSE-SU-2026:22306-1","USN-3864-1"]},"timeline":[{"kind":"published","date":"2018-02-24T06:00:00.000Z","label":"Published","detail":"Vulnerability first disclosed.","source":null},{"kind":"modified","date":"2024-08-05T06:24:12.048Z","label":"Last modified","detail":"Vulnerability information updated.","source":null}],"risk":{"score":37,"level":"medium","profile":"Default","thresholds":{"critical":75,"high":50,"medium":25,"low":10}},"meta":{"dataAsOf":"2026-10-19T23:05:52.260Z","stale":false,"partial":false}}