{"id":"CVE-2020-18768","aliases":["AZL-43876","AZL-44271","DEBIAN-CVE-2020-18768","DLA-2777-1","EUVD-2020-10685","GHSA-mqcp-f5vw-2vmj","JLSEC-2025-309","SUSE-SU-2023:4370-1","SUSE-SU-2023:4371-1","UBUNTU-CVE-2020-18768"],"status":"published","title":"There exists one heap buffer overflow in _TIFFmemcpy in tif_unix.c in libtiff 4.0.10, which...","description":"There exists one heap buffer overflow in _TIFFmemcpy in tif_unix.c in libtiff 4.0.10, which allows an attacker to cause a denial-of-service through a crafted tiff file.","severity":{"version":"3.1","score":5.5,"vector":"CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H","level":"medium","assessor":"primary","from":"nvd"},"epss":{"day":"2026-11-12","score":0.00277,"percentile":0.20412,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":true},"cwes":["CWE-787"],"published":"2021-10-03T00:00:00Z","modified":"2026-11-05T05:36:30Z","fixes":[{"ecosystem":"Debian:12","package":"tiff","fixed_in":["4.0.10+git190814-1"],"sources":["osv"]},{"ecosystem":"Debian:13","package":"tiff","fixed_in":["4.0.10+git190814-1"],"sources":["osv"]},{"ecosystem":"Debian:14","package":"tiff","fixed_in":["4.0.10+git190814-1"],"sources":["osv"]},{"ecosystem":"Julia","package":"Libtiff_jll","fixed_in":["4.1.0+0"],"sources":["osv"]}],"affected":[{"source":"osv","ecosystem":"Azure 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Package Hub 15 SP4","package":"tiff","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"4.0.9-150000.45.32.1"}]}],"bundled":9},{"source":"osv","ecosystem":"SUSE:Linux Enterprise Module for Package Hub 15 SP5","package":"tiff","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"4.0.9-150000.45.32.1"}]}],"bundled":9},{"source":"osv","ecosystem":"SUSE:Linux Enterprise Micro 5.2","package":"tiff","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"4.0.9-150000.45.32.1"}]}],"bundled":9},{"source":"osv","ecosystem":"openSUSE:Leap Micro 5.3","package":"tiff","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"4.0.9-150000.45.32.1"}]}],"bundled":9},{"source":"osv","ecosystem":"openSUSE:Leap Micro 5.4","package":"tiff","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"4.0.9-150000.45.32.1"}]}],"bundled":9},{"source":"osv","ecosystem":"openSUSE:Leap 15.4","package":"tiff","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"4.0.9-150000.45.32.1"}]}],"bundled":9},{"source":"osv","ecosystem":"openSUSE:Leap 15.5","package":"tiff","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"4.0.9-150000.45.32.1"}]}],"bundled":9},{"source":"osv","ecosystem":"SUSE:Linux Enterprise Software Development Kit 12 SP5","package":"tiff","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"4.0.9-44.71.1"}]}],"bundled":9},{"source":"osv","ecosystem":"SUSE:Linux Enterprise Server 12 SP5","package":"tiff","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"4.0.9-44.71.1"}]}],"bundled":9},{"source":"osv","ecosystem":"SUSE:Linux Enterprise Server for SAP Applications 12 SP5","package":"tiff","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"4.0.9-44.71.1"}]}],"bundled":9}],"products":[{"vendor":"libtiff","product":"libtiff"}],"references":[{"url":"http://bugzilla.maptools.org/show_bug.cgi?id=2848","tags":["x_transferred","Exploit","Issue Tracking","Third Party Advisory","report","web"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2020-18768","tags":["web"]},{"url":"https://github.com/advisories/GHSA-mqcp-f5vw-2vmj"},{"url":"https://security-tracker.debian.org/tracker/CVE-2020-18768","tags":["advisory"]},{"url":"https://www.suse.com/support/update/announcement/2023/suse-su-20234370-1/","tags":["advisory"]},{"url":"https://bugzilla.suse.com/1212535","tags":["report"]},{"url":"https://bugzilla.suse.com/1212881","tags":["report"]},{"url":"https://bugzilla.suse.com/1212883","tags":["report"]},{"url":"https://bugzilla.suse.com/1212888","tags":["report"]},{"url":"https://bugzilla.suse.com/1213273","tags":["report"]},{"url":"https://bugzilla.suse.com/1213274","tags":["report"]},{"url":"https://bugzilla.suse.com/1213589","tags":["report"]},{"url":"https://bugzilla.suse.com/1213590","tags":["report"]},{"url":"https://bugzilla.suse.com/1214574","tags":["report"]},{"url":"https://www.suse.com/security/cve/CVE-2020-18768","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2023-25433","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2023-26966","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2023-2908","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2023-3316","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2023-3576","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2023-3618","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2023-38288","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2023-38289","tags":["web"]},{"url":"https://www.suse.com/support/update/announcement/2023/suse-su-20234371-1/","tags":["advisory"]},{"url":"https://ubuntu.com/security/CVE-2020-18768","tags":["report"]},{"url":"https://www.cve.org/CVERecord?id=CVE-2020-18768","tags":["report"]}],"sources":{"cve":[{"id":"CVE-2020-18768","description":"There exists one heap buffer overflow in _TIFFmemcpy in tif_unix.c in libtiff 4.0.10, which allows an attacker to cause a denial-of-service through a crafted tiff file.","status":"published","published":"2023-08-22T00:00:00Z","modified":"2024-10-04T16:36:53.098Z","updated_at":"2026-11-02T14:35:59.434367Z"}],"euvd":[{"id":"EUVD-2020-10685","description":"There exists one heap buffer overflow in _TIFFmemcpy in tif_unix.c in libtiff 4.0.10, which allows an attacker to cause a denial-of-service through a crafted tiff file.","status":"published","published":"2023-08-22T00:00:00Z","modified":"2024-10-04T16:36:53Z","updated_at":"2026-11-03T00:27:51.858084Z"}],"ghsa":[{"id":"GHSA-mqcp-f5vw-2vmj","title":"There exists one heap buffer overflow in _TIFFmemcpy in tif_unix.c in libtiff 4.0.10, which...","description":"There exists one heap buffer overflow in _TIFFmemcpy in tif_unix.c in libtiff 4.0.10, which allows an attacker to cause a denial-of-service through a crafted tiff file.","status":"published","published":"2023-08-22T21:30:24Z","modified":"2024-04-04T07:05:33Z","cvss":[{"version":"3.1","score":5.5,"vector":"CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H","level":"medium"}],"cwes":["CWE-787"],"updated_at":"2026-11-02T14:56:48.229282Z"}],"nvd":[{"id":"CVE-2020-18768","description":"There exists one heap buffer overflow in _TIFFmemcpy in tif_unix.c in libtiff 4.0.10, which allows an attacker to cause a denial-of-service through a crafted tiff file.","status":"published","published":"2023-08-22T19:15:55.48Z","modified":"2026-06-17T02:59:28.17Z","cvss":[{"version":"3.1","score":5.5,"vector":"CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H","level":"medium","assessor":"primary"}],"cwes":["CWE-787"],"updated_at":"2026-11-02T14:06:47.910346Z"}],"osv":[{"id":"AZL-43876","title":"CVE-2020-18768 affecting package openjpeg2 2.3.1-12","description":"There exists one heap buffer overflow in _TIFFmemcpy in tif_unix.c in libtiff 4.0.10, which allows an attacker to cause a denial-of-service through a crafted tiff file.","status":"published","published":"2023-08-22T19:15:55Z","modified":"2026-04-21T04:31:11.879556Z","cvss":[{"version":"3.1","score":5.5,"vector":"CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H","level":"medium"}],"updated_at":"2026-11-02T15:28:05.284713Z"},{"id":"AZL-44271","title":"CVE-2020-18768 affecting package openjpeg2 2.3.1-12","description":"There exists one heap buffer overflow in _TIFFmemcpy in tif_unix.c in libtiff 4.0.10, which allows an attacker to cause a denial-of-service through a crafted tiff file.","status":"published","published":"2023-08-22T19:15:55Z","modified":"2026-11-05T05:36:30Z","cvss":[{"version":"3.1","score":5.5,"vector":"CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H","level":"medium"}],"updated_at":"2026-11-05T16:41:20.107976Z"},{"id":"CVE-2020-18768","description":"There exists one heap buffer overflow in _TIFFmemcpy in tif_unix.c in libtiff 4.0.10, which allows an attacker to cause a denial-of-service through a crafted tiff file.","status":"published","published":"2023-08-22T19:15:55.48Z","modified":"2026-10-24T10:30:39.760245654Z","cvss":[{"version":"3.1","score":5.5,"vector":"CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H","level":"medium"}],"updated_at":"2026-11-02T15:44:15.212689Z"},{"id":"DEBIAN-CVE-2020-18768","description":"There exists one heap buffer overflow in _TIFFmemcpy in tif_unix.c in libtiff 4.0.10, which allows an attacker to cause a denial-of-service through a crafted tiff file.","status":"published","published":"2023-08-22T19:15:55.48Z","modified":"2026-10-26T12:02:28.951780062Z","cvss":[{"version":"3.1","score":5.5,"vector":"CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H","level":"medium"}],"updated_at":"2026-11-02T15:45:33.384087Z"},{"id":"JLSEC-2025-309","title":"There exists one heap buffer overflow in `_TIFFmemcpy` in `tif_unix.c` in libtiff 4.0.10, which...","description":"There exists one heap buffer overflow in `_TIFFmemcpy` in `tif_unix.c` in libtiff 4.0.10, which allows an attacker to cause a denial-of-service through a crafted tiff file.","status":"published","published":"2025-11-25T22:18:43.603Z","modified":"2026-07-25T18:23:40.317088863Z","cvss":[{"version":"3.1","score":5.5,"vector":"CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H","level":"medium"}],"updated_at":"2026-11-02T15:47:17.805107Z"},{"id":"UBUNTU-CVE-2020-18768","description":"There exists one heap buffer overflow in _TIFFmemcpy in tif_unix.c in libtiff 4.0.10, which allows an attacker to cause a denial-of-service through a crafted tiff file.","status":"withdrawn","published":"2023-08-22T19:15:00Z","modified":"2025-07-16T07:19:26.930882Z","cvss":[{"version":"3.1","score":5.5,"vector":"CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H","level":"medium"}],"updated_at":"2026-11-02T15:54:23.344108Z"},{"id":"DLA-2777-1","title":"tiff - security update","status":"published","published":"2021-10-03T00:00:00Z","modified":"2026-03-09T01:23:36.680237Z","updated_at":"2026-11-02T15:46:11.189256Z"},{"id":"SUSE-SU-2023:4370-1","title":"Security update for tiff","description":"This update for tiff fixes the following issues:\n\n- CVE-2023-38289: Fixed a NULL pointer dereference in raw2tiff\n  (bsc#1213589).\n- CVE-2023-38288: Fixed an integer overflow in raw2tiff (bsc#1213590).\n- CVE-2023-3576: Fixed a memory leak in tiffcrop (bsc#1213273).\n- CVE-2020-18768: Fixed an out of bounds read in tiffcp (bsc#1214574).\n- CVE-2023-26966: Fixed an out of bounds read when transforming a\n  little-endian file to a big-endian output (bsc#1212881)\n- CVE-2023-3618: Fixed a NULL pointer dereference while encoding FAX3\n  files (bsc#1213274).\n- CVE-2023-2908: Fixed an undefined behavior issue when doing pointer\n  arithmetic on a NULL pointer (bsc#1212888).\n- CVE-2023-3316: Fixed a NULL pointer dereference while opening a file\n  in an inaccessible path (bsc#1212535).\n- CVE-2023-25433: Fixed a buffer overflow in tiffcrop (bsc#1212883).\n","status":"published","published":"2023-11-06T08:51:27Z","modified":"2026-02-04T03:59:28.047338Z","updated_at":"2026-11-02T15:53:53.865042Z"},{"id":"SUSE-SU-2023:4371-1","title":"Security update for tiff","description":"This update for tiff fixes the following issues:\n\n- CVE-2023-38289: Fixed a NULL pointer dereference in raw2tiff\n  (bsc#1213589).\n- CVE-2023-38288: Fixed an integer overflow in raw2tiff (bsc#1213590).\n- CVE-2023-3576: Fixed a memory leak in tiffcrop (bsc#1213273).\n- CVE-2020-18768: Fixed an out of bounds read in tiffcp (bsc#1214574).\n- CVE-2023-26966: Fixed an out of bounds read when transforming a\n  little-endian file to a big-endian output (bsc#1212881)\n- CVE-2023-3618: Fixed a NULL pointer dereference while encoding FAX3\n  files (bsc#1213274).\n- CVE-2023-2908: Fixed an undefined behavior issue when doing pointer\n  arithmetic on a NULL pointer (bsc#1212888).\n- CVE-2023-3316: Fixed a NULL pointer dereference while opening a file\n  in an inaccessible path (bsc#1212535).\n- CVE-2023-25433: Fixed a buffer overflow in tiffcrop (bsc#1212883).\n","status":"published","published":"2023-11-06T08:52:20Z","modified":"2026-02-04T02:35:39.891011Z","updated_at":"2026-11-02T15:53:53.865042Z"}]}}