{"id":"CVE-2018-20431","aliases":["DEBIAN-CVE-2018-20431","DLA-1616-1","DSA-4361-1","EUVD-2018-12988","GHSA-j85j-8r4r-vm4q","MGASA-2019-0013","UBUNTU-CVE-2018-20431","USN-4641-1"],"status":"published","title":"GNU Libextractor through 1.8 has a NULL Pointer Dereference vulnerability in the function...","description":"GNU Libextractor through 1.8 has a NULL Pointer Dereference vulnerability in the function process_metadata() in plugins/ole2_extractor.c.","severity":{"version":"3.0","score":6.5,"vector":"CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H","level":"medium","assessor":"primary","from":"nvd"},"epss":{"day":"2026-11-08","score":0.02226,"percentile":0.8284,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":true},"cwes":["CWE-476"],"published":"2018-12-24T00:00:00Z","modified":"2026-10-23T18:03:56Z","fixes":[{"ecosystem":"Debian:12","package":"libextractor","fixed_in":["1:1.8-2"],"sources":["osv"]},{"ecosystem":"Debian:13","package":"libextractor","fixed_in":["1:1.8-2"],"sources":["osv"]},{"ecosystem":"Debian:14","package":"libextractor","fixed_in":["1:1.8-2"],"sources":["osv"]},{"ecosystem":"Ubuntu:Pro:14.04:LTS","package":"libextractor","fixed_in":["1:1.3-1ubuntu0.1~esm1"],"sources":["osv"]},{"ecosystem":"Ubuntu:16.04:LTS","package":"libextractor","fixed_in":["1:1.3-4+deb9u3build0.16.04.1"],"sources":["osv"]}],"affected":[{"source":"osv","ecosystem":"Debian:12","package":"libextractor","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1:1.8-2"}]}]},{"source":"osv","ecosystem":"Debian:13","package":"libextractor","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1:1.8-2"}]}]},{"source":"osv","ecosystem":"Debian:14","package":"libextractor","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1:1.8-2"}]}]},{"source":"osv","ecosystem":"Debian:8","package":"libextractor","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1:1.3-2+deb8u4"}]}],"versions":["1:1.3-2","1:1.3-2+deb8u1","1:1.3-2+deb8u2","1:1.3-2+deb8u3"],"bundled":2},{"source":"osv","ecosystem":"Debian:9","package":"libextractor","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1:1.3-4+deb9u3"}]}],"versions":["1:1.3-4","1:1.3-4+deb9u1","1:1.3-4+deb9u2"],"bundled":2},{"source":"osv","ecosystem":"Mageia:6","package":"libextractor","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1.7-1.1.mga6"}]}],"bundled":2},{"source":"osv","ecosystem":"Ubuntu:Pro:14.04:LTS","package":"libextractor","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1:1.3-1ubuntu0.1~esm1"}]}],"versions":["1:1.1-1ubuntu1","1:1.2-1ubuntu1","1:1.3-1"]},{"source":"osv","ecosystem":"Ubuntu:16.04:LTS","package":"libextractor","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1:1.3-4+deb9u3build0.16.04.1"}]}],"versions":["1:1.3-2build1","1:1.3-2ubuntu1","1:1.3-3"]},{"source":"osv","ecosystem":"Ubuntu:18.04:LTS","package":"libextractor","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["1:1.3-4build3","1:1.6-1","1:1.6-1build1","1:1.6-2"]},{"source":"osv","ecosystem":"Ubuntu:16.04:LTS","package":"libextractor","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1:1.3-4+deb9u3build0.16.04.1"}]}],"versions":["1:1.3-2build1","1:1.3-2ubuntu1","1:1.3-3"],"bundled":12}],"products":[{"vendor":"debian","product":"debian_linux"},{"vendor":"gnu","product":"libextractor"}],"references":[{"url":"https://gnunet.org/bugs/view.php?id=5494","tags":["x_refsource_MISC","x_transferred","Exploit","Issue Tracking","Third Party Advisory","report"]},{"url":"https://lists.debian.org/debian-lts-announce/2018/12/msg00015.html","tags":["mailing-list","x_refsource_MLIST","x_transferred","Mailing List","Third Party Advisory","advisory","report"]},{"url":"https://www.debian.org/security/2018/dsa-4361","tags":["vendor-advisory","x_refsource_DEBIAN","x_transferred","Third Party Advisory","advisory","web"]},{"url":"https://gnunet.org/git/libextractor.git/tree/ChangeLog","tags":["x_refsource_MISC","x_transferred","Third Party Advisory","advisory","report"]},{"url":"https://gnunet.org/git/libextractor.git/commit/?id=489c4a540bb2c4744471441425b8932b97a153e7","tags":["x_refsource_MISC","x_transferred","Patch","Third Party Advisory","fix","report"]},{"url":"http://www.securityfocus.com/bid/106300","tags":["vdb-entry","x_refsource_BID","x_transferred","Third Party Advisory","VDB Entry","advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2018-20431"},{"url":"https://github.com/advisories/GHSA-j85j-8r4r-vm4q"},{"url":"https://security-tracker.debian.org/tracker/CVE-2018-20431","tags":["advisory"]},{"url":"https://advisories.mageia.org/MGASA-2019-0013.html","tags":["advisory"]},{"url":"https://bugs.mageia.org/show_bug.cgi?id=24093","tags":["report"]},{"url":"https://ubuntu.com/security/CVE-2018-20431","tags":["report"]},{"url":"https://ubuntu.com/security/notices/USN-4641-1","tags":["advisory"]},{"url":"https://www.cve.org/CVERecord?id=CVE-2018-20431","tags":["report"]},{"url":"https://ubuntu.com/security/CVE-2017-15266","tags":["report"]},{"url":"https://ubuntu.com/security/CVE-2017-15267","tags":["report"]},{"url":"https://ubuntu.com/security/CVE-2017-15600","tags":["report"]},{"url":"https://ubuntu.com/security/CVE-2017-15601","tags":["report"]},{"url":"https://ubuntu.com/security/CVE-2017-15602","tags":["report"]},{"url":"https://ubuntu.com/security/CVE-2017-15922","tags":["report"]},{"url":"https://ubuntu.com/security/CVE-2017-17440","tags":["report"]},{"url":"https://ubuntu.com/security/CVE-2018-14346","tags":["report"]},{"url":"https://ubuntu.com/security/CVE-2018-14347","tags":["report"]},{"url":"https://ubuntu.com/security/CVE-2018-16430","tags":["report"]},{"url":"https://ubuntu.com/security/CVE-2018-20430","tags":["report"]}],"sources":{"cve":[{"id":"CVE-2018-20431","description":"GNU Libextractor through 1.8 has a NULL Pointer Dereference vulnerability in the function process_metadata() in plugins/ole2_extractor.c.","status":"published","published":"2018-12-24T05:00:00Z","modified":"2024-08-05T11:58:19.176Z","updated_at":"2026-11-02T14:34:59.872731Z"}],"euvd":[{"id":"EUVD-2018-12988","description":"GNU Libextractor through 1.8 has a NULL Pointer Dereference vulnerability in the function process_metadata() in plugins/ole2_extractor.c.","status":"published","published":"2018-12-24T05:00:00Z","modified":"2024-08-05T11:58:19Z","updated_at":"2026-11-03T02:39:30.889297Z"}],"ghsa":[{"id":"GHSA-j85j-8r4r-vm4q","title":"GNU Libextractor through 1.8 has a NULL Pointer Dereference vulnerability in the function...","description":"GNU Libextractor through 1.8 has a NULL Pointer Dereference vulnerability in the function process_metadata() in plugins/ole2_extractor.c.","status":"published","published":"2022-05-14T01:41:42Z","modified":"2023-02-02T05:04:31Z","cvss":[{"version":"3.0","score":6.5,"vector":"CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H","level":"medium"}],"cwes":["CWE-476"],"updated_at":"2026-11-02T14:51:53.265489Z"}],"nvd":[{"id":"CVE-2018-20431","description":"GNU Libextractor through 1.8 has a NULL Pointer Dereference vulnerability in the function process_metadata() in plugins/ole2_extractor.c.","status":"published","published":"2018-12-24T05:29:01.6Z","modified":"2026-06-17T01:52:49.87Z","cvss":[{"version":"3.0","score":6.5,"vector":"CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H","level":"medium","assessor":"primary"},{"version":"2.0","score":4.3,"vector":"AV:N/AC:M/Au:N/C:N/I:N/A:P","level":"medium","assessor":"primary"}],"cwes":["CWE-476"],"updated_at":"2026-11-02T14:04:50.99633Z"}],"osv":[{"id":"CVE-2018-20431","description":"GNU Libextractor through 1.8 has a NULL Pointer Dereference vulnerability in the function process_metadata() in plugins/ole2_extractor.c.","status":"published","published":"2018-12-24T05:29:01.6Z","modified":"2026-04-16T06:22:50.864799353Z","cvss":[{"version":"3.0","score":6.5,"vector":"CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H","level":"medium"}],"updated_at":"2026-11-02T15:44:09.145458Z"},{"id":"DEBIAN-CVE-2018-20431","description":"GNU Libextractor through 1.8 has a NULL Pointer Dereference vulnerability in the function process_metadata() in plugins/ole2_extractor.c.","status":"published","published":"2018-12-24T05:29:01.6Z","modified":"2026-10-23T18:03:56.786835159Z","cvss":[{"version":"3.0","score":6.5,"vector":"CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H","level":"medium"}],"updated_at":"2026-11-02T15:45:30.57382Z"},{"id":"UBUNTU-CVE-2018-20431","description":"GNU Libextractor through 1.8 has a NULL Pointer Dereference vulnerability in the function process_metadata() in plugins/ole2_extractor.c.","status":"published","published":"2018-12-24T05:29:00Z","modified":"2026-04-22T11:51:38.565013Z","cvss":[{"version":"3.0","score":6.5,"vector":"CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H","level":"medium"}],"updated_at":"2026-11-02T15:54:17.91743Z"},{"id":"DLA-1616-1","title":"libextractor - security update","status":"published","published":"2018-12-24T00:00:00Z","modified":"2026-03-09T01:01:10.217839Z","updated_at":"2026-11-02T15:46:09.777694Z"},{"id":"DSA-4361-1","title":"libextractor - security update","status":"published","published":"2018-12-28T00:00:00Z","modified":"2026-03-09T02:10:55.398774Z","updated_at":"2026-11-02T15:46:16.862196Z"},{"id":"MGASA-2019-0013","title":"Updated libextractor packages fix security vulnerabilities","description":"Several vulnerabilities were discovered in libextractor which may lead\nto denial of service or memory disclosure if a malformed OLE file is\nprocessed (CVE-2018-20430, CVE-2018-20431).\n","status":"published","published":"2019-01-05T18:30:16Z","modified":"2026-04-16T06:24:58.533680387Z","updated_at":"2026-11-02T15:49:40.793816Z"},{"id":"USN-4641-1","title":"libextractor vulnerabilities","description":"It was discovered that Libextractor incorrectly handled zero sample rate.\nAn attacker could possibly use this issue to cause a denial of service.\n(CVE-2017-15266)\n\nIt was discovered that Libextractor incorrectly handled certain FLAC\nmetadata. An attacker could possibly use this issue to cause a denial of\nservice. (CVE-2017-15267)\n\nIt was discovered that Libextractor incorrectly handled certain specially\ncrafted files. An attacker could possibly use this issue to cause a denial\nof service. (CVE-2017-15600, CVE-2018-16430, CVE-2018-20430)\n\nIt was discovered that Libextractor incorrectly handled certain inputs. An\nattacker could possibly use this issue to cause a denial of service.\n(CVE-2017-15601)\n\nIt was discovered that Libextractor incorrectly handled integers. An\nattacker could possibly use this issue to cause a denial of service.\n(CVE-2017-15602)\n\nIt was discovered that Libextractore incorrectly handled certain crafted\nfiles. An attacker could possibly use this issue to cause a denial of\nservice. (CVE-2017-15922)\n\nIt was discovered tha Libextractor incorrectly handled certain files. An\nattacker could possibly use this issue to cause a denial of service.\n(CVE-2017-17440)\n\nIt was discovered that Libextractor incorrectly handled certain malformed\nfiles. An attacker could possibly use this issue to cause a denial of\nservice. (CVE-2018-14346)\n\nIt was discovered that Libextractor incorrectly handled malformed files. An\nattacker could possibly use this issue to cause a denial of service.\n(CVE-2018-14347)\n\nIt was discovered that Libextractor incorrectly handled metadata. An\nattacker could possibly use this issue to cause a denial of service.\n(CVE-2018-20431)\n","status":"published","published":"2020-11-23T18:02:19Z","modified":"2026-04-27T15:46:09.488278Z","updated_at":"2026-11-02T16:58:15.159055Z"}]}}