{"id":"CVE-2018-18557","url":"https://www.cyber-defence.io/tools/cve/CVE-2018-18557","generatedAt":"2026-10-28T22:13:00.971Z","title":"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 (with JBIG enabled) decodes arbitrarily-sized JBIG into a buffer, ignoring…","description":"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 (with JBIG enabled) decodes arbitrarily-sized JBIG into a buffer, ignoring the buffer size, which leads to a tif_jbig.c JBIGDecode out-of-bounds write.","published":"2018-10-22T16:29:00.000Z","lastModified":"2026-06-17T01:47:30.000Z","status":"Modified","sourceIdentifier":"cve@mitre.org","cvss":{"version":"3.0","score":8.8,"severity":"HIGH","vector":"CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H"},"cwe":["CWE-787"],"affected":["libtiff/libtiff","debian/debian linux","canonical/ubuntu linux"],"epss":{"score":0.1496,"percentile":0.96692,"date":"2026-10-27","history":[{"date":"2026-09-21","score":0.13137,"percentile":0.96248},{"date":"2026-09-22","score":0.1496,"percentile":0.96554}]},"kev":{"listed":false},"exploits":{"count":1,"verified":true,"firstPublished":"2018-10-25","source":"Exploit-DB (https://gitlab.com/exploit-database/exploitdb)","entries":[{"edbId":45694,"kind":"exploit","title":"libtiff 4.0.9 - Decodes Arbitrarily Sized JBIG into a Target Buffer","url":"https://www.exploit-db.com/exploits/45694","sourceUrl":"https://gitlab.com/exploit-database/exploitdb/-/blob/main/exploits/linux/dos/45694.c","file":"exploits/linux/dos/45694.c","published":"2018-10-25","added":"2018-10-25","updated":"2018-10-25","author":"Google Security Research","type":"dos","platform":"linux","port":null,"verified":true,"codes":["CVE-2018-18557"],"tags":"Heap Overflow","aliases":null,"applicationUrl":"http://www.exploit-db.comtiff-4.0.9.tar.gz","screenshotUrl":null,"referenceUrl":"https://bugs.chromium.org/p/project-zero/issues/detail?id=1697"}]},"verdict":{"level":"urgent","text":"EPSS puts the probability of exploitation in the next 30 days at 15.0%, higher than 97% of all known CVEs. Patch or mitigate before the next change window."},"changes":[],"references":[{"url":"https://access.redhat.com/errata/RHSA-2019:2053","source":"cve@mitre.org"},{"url":"https://github.com/Hack-Me/Pocs_for_Multi_Versions/tree/main/CVE-2018-18557","source":"cve@mitre.org"},{"url":"https://gitlab.com/libtiff/libtiff/commit/681748ec2f5ce88da5f9fa6831e1653e46af8a66","source":"cve@mitre.org"},{"url":"https://gitlab.com/libtiff/libtiff/merge_requests/38","tags":["Third Party Advisory"],"source":"cve@mitre.org"},{"url":"https://lists.debian.org/debian-lts-announce/2018/10/msg00019.html","tags":["Mailing List","Third Party Advisory"],"source":"cve@mitre.org"},{"url":"https://security.gentoo.org/glsa/201904-15","source":"cve@mitre.org"},{"url":"https://usn.ubuntu.com/3864-1/","tags":["Third Party Advisory"],"source":"cve@mitre.org"},{"url":"https://usn.ubuntu.com/3906-2/","source":"cve@mitre.org"},{"url":"https://www.debian.org/security/2018/dsa-4349","tags":["Third Party Advisory"],"source":"cve@mitre.org"},{"url":"https://www.exploit-db.com/exploits/45694/","tags":["Exploit","Third Party Advisory","VDB Entry"],"source":"cve@mitre.org"},{"url":"https://access.redhat.com/errata/RHSA-2019:2053","source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://github.com/Hack-Me/Pocs_for_Multi_Versions/tree/main/CVE-2018-18557","source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://gitlab.com/libtiff/libtiff/commit/681748ec2f5ce88da5f9fa6831e1653e46af8a66","source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://gitlab.com/libtiff/libtiff/merge_requests/38","tags":["Third Party Advisory"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://lists.debian.org/debian-lts-announce/2018/10/msg00019.html","tags":["Mailing List","Third Party Advisory"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://security.gentoo.org/glsa/201904-15","source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://usn.ubuntu.com/3864-1/","tags":["Third Party Advisory"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://usn.ubuntu.com/3906-2/","source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://www.debian.org/security/2018/dsa-4349","tags":["Third Party Advisory"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://www.exploit-db.com/exploits/45694/","tags":["Exploit","Third Party Advisory","VDB Entry"],"source":"af854a3a-2127-422b-91ae-364da2661108"}],"sources":{"nvd":"https://nvd.nist.gov/vuln/detail/CVE-2018-18557","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."}