{"id":"CVE-2020-28163","aliases":["AZL-33328","AZL-42090","DEBIAN-CVE-2020-28163","EUVD-2020-20649","GHSA-7732-hqr2-cr7r","OESA-2022-1818","OESA-2022-1819","OESA-2022-1820","UBUNTU-CVE-2020-28163"],"status":"published","title":"libdwarf before 20201201 allows a dwarf_print_lines.c NULL pointer dereference and application...","description":"libdwarf before 20201201 allows a dwarf_print_lines.c NULL pointer dereference and application crash via a DWARF5 line-table header that has an invalid FORM for a pathname.","severity":{"version":"3.1","score":6.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H","level":"medium","assessor":"primary","from":"nvd"},"epss":{"day":"2026-11-11","score":0.00787,"percentile":0.56587,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":true},"cwes":["CWE-476"],"published":"2022-08-11T11:05:05Z","modified":"2026-11-05T05:40:51Z","fixes":[{"ecosystem":"Azure Linux:2","package":"libdwarf","fixed_in":["0.9.0"],"sources":["osv"]},{"ecosystem":"Azure Linux:3","package":"libdwarf","fixed_in":["0.9.0-1"],"sources":["osv"]},{"ecosystem":"Debian:12","package":"dwarfutils","fixed_in":["20201201-1"],"sources":["osv"]},{"ecosystem":"Debian:13","package":"dwarfutils","fixed_in":["20201201-1"],"sources":["osv"]},{"ecosystem":"Debian:14","package":"dwarfutils","fixed_in":["20201201-1"],"sources":["osv"]},{"ecosystem":"openEuler:22.03-LTS","package":"libdwarf","fixed_in":["20210528-1.oe2203"],"sources":["osv"]}],"affected":[{"source":"osv","ecosystem":"Azure Linux:2","package":"libdwarf","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"0.9.0"}]}]},{"source":"osv","ecosystem":"Azure Linux:3","package":"libdwarf","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"0.9.0-1"}]}]},{"source":"osv","ecosystem":"Debian:12","package":"dwarfutils","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"20201201-1"}]}]},{"source":"osv","ecosystem":"Debian:13","package":"dwarfutils","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"20201201-1"}]}]},{"source":"osv","ecosystem":"Debian:14","package":"dwarfutils","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"20201201-1"}]}]},{"source":"osv","ecosystem":"openEuler:22.03-LTS","package":"libdwarf","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"20210528-1.oe2203"}]}]},{"source":"osv","ecosystem":"openEuler:20.03-LTS-SP1","package":"libdwarf","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"20210528-1.oe1"}]}],"bundled":2},{"source":"osv","ecosystem":"openEuler:20.03-LTS-SP3","package":"libdwarf","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"20210528-1.oe1"}]}],"bundled":2},{"source":"osv","ecosystem":"Ubuntu:16.04:LTS","package":"dwarfutils","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["20120410-2","20120410-2+deb7u2build0.16.04.1"]},{"source":"osv","ecosystem":"Ubuntu:18.04:LTS","package":"dwarfutils","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["20170709-1","20180129-1"]},{"source":"osv","ecosystem":"Ubuntu:20.04:LTS","package":"dwarfutils","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["20180809-1","20190529-1","20191104-1","20191104-1ubuntu1","20200114-1"]}],"products":[{"vendor":"libdwarf_project","product":"libdwarf"}],"references":[{"url":"https://github.com/davea42/libdwarf-code/commit/faf99408e3f9f706fc3809dd400e831f989778d3","tags":["x_transferred","Patch","fix","report"]},{"url":"https://www.prevanders.net/dwarfbug.html#DW202010-003","tags":["x_transferred","Third Party Advisory","advisory","report"]},{"url":"http://web.archive.org/web/20190601140703/https://sourceforge.net/projects/libdwarf/","tags":["x_transferred","Product","web"]},{"url":"https://bugzilla.redhat.com/show_bug.cgi?id=2026000","tags":["x_transferred","Issue Tracking","Permissions Required","Third Party Advisory","report"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2020-28163","tags":["web","advisory"]},{"url":"http://web.archive.org/web/20190601140703/https://sourceforge.net/projects/libdwarf"},{"url":"https://github.com/advisories/GHSA-7732-hqr2-cr7r"},{"url":"https://security-tracker.debian.org/tracker/CVE-2020-28163","tags":["advisory"]},{"url":"https://www.openeuler.org/en/security/safety-bulletin/detail.html?id=openEuler-SA-2022-1818","tags":["advisory"]},{"url":"https://www.openeuler.org/en/security/safety-bulletin/detail.html?id=openEuler-SA-2022-1819","tags":["advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2020-27545","tags":["advisory"]},{"url":"https://www.openeuler.org/en/security/safety-bulletin/detail.html?id=openEuler-SA-2022-1820","tags":["advisory"]},{"url":"https://ubuntu.com/security/CVE-2020-28163","tags":["report"]},{"url":"https://www.cve.org/CVERecord?id=CVE-2020-28163","tags":["report"]}],"sources":{"cve":[{"id":"CVE-2020-28163","description":"libdwarf before 20201201 allows a dwarf_print_lines.c NULL pointer dereference and application crash via a DWARF5 line-table header that has an invalid FORM for a pathname.","status":"published","published":"2023-04-15T00:00:00Z","modified":"2025-02-06T16:20:12.542Z","cvss":[{"version":"3.1","score":6.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H","level":"medium","assessor":"adp"}],"cwes":["CWE-476"],"updated_at":"2026-11-02T14:35:57.017407Z"}],"euvd":[{"id":"EUVD-2020-20649","description":"libdwarf before 20201201 allows a dwarf_print_lines.c NULL pointer dereference and application crash via a DWARF5 line-table header that has an invalid FORM for a pathname.","status":"published","published":"2023-04-15T00:00:00Z","modified":"2025-02-06T16:20:12Z","cvss":[{"version":"3.1","score":6.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H","level":"medium"}],"updated_at":"2026-11-03T00:04:03.312509Z"}],"ghsa":[{"id":"GHSA-7732-hqr2-cr7r","title":"libdwarf before 20201201 allows a dwarf_print_lines.c NULL pointer dereference and application...","description":"libdwarf before 20201201 allows a dwarf_print_lines.c NULL pointer dereference and application crash via a DWARF5 line-table header that has an invalid FORM for a pathname.","status":"published","published":"2023-04-16T00:30:24Z","modified":"2024-04-04T03:30:14Z","cvss":[{"version":"3.1","score":6.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H","level":"medium"}],"cwes":["CWE-476"],"updated_at":"2026-11-02T14:56:15.423381Z"}],"nvd":[{"id":"CVE-2020-28163","description":"libdwarf before 20201201 allows a dwarf_print_lines.c NULL pointer dereference and application crash via a DWARF5 line-table header that has an invalid FORM for a pathname.","status":"published","published":"2023-04-16T00:15:07.313Z","modified":"2026-06-17T03:10:09.487Z","cvss":[{"version":"3.1","score":6.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H","level":"medium","assessor":"primary"},{"version":"3.1","score":6.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H","level":"medium","assessor":"secondary"}],"cwes":["CWE-476"],"updated_at":"2026-11-02T14:06:47.910346Z"}],"osv":[{"id":"AZL-33328","title":"CVE-2020-28163 affecting package libdwarf for versions less than 0.9.0","description":"libdwarf before 20201201 allows a dwarf_print_lines.c NULL pointer dereference and application crash via a DWARF5 line-table header that has an invalid FORM for a 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pathname.","status":"published","published":"2023-04-16T00:15:07.313Z","modified":"2026-10-20T13:59:07.300088362Z","cvss":[{"version":"3.1","score":6.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H","level":"medium"}],"updated_at":"2026-11-02T15:44:16.248747Z"},{"id":"DEBIAN-CVE-2020-28163","description":"libdwarf before 20201201 allows a dwarf_print_lines.c NULL pointer dereference and application crash via a DWARF5 line-table header that has an invalid FORM for a pathname.","status":"published","published":"2023-04-16T00:15:07.313Z","modified":"2026-10-26T12:02:42.607648674Z","cvss":[{"version":"3.1","score":6.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H","level":"medium"}],"updated_at":"2026-11-02T15:45:34.019707Z"},{"id":"OESA-2022-1818","title":"libdwarf security update","description":"Libdwarf is a library of functions to provide read/write DWARF debugging records.\r\n\r\nSecurity Fix(es):\r\n\r\nA flaw was found in libdwarf. 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A possible null pointer dereference vulnerability allows an attacker to input a specially crafted file, leading to a crash. The highest threat from this vulnerability is to system availability.(CVE-2020-28163)","status":"published","published":"2022-08-11T11:05:05Z","modified":"2026-08-18T01:16:12.801932897Z","cvss":[{"version":"3.1","score":6.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H","level":"medium"}],"updated_at":"2026-11-02T15:52:39.528805Z"},{"id":"UBUNTU-CVE-2020-28163","description":"libdwarf before 20201201 allows a dwarf_print_lines.c NULL pointer dereference and application crash via a DWARF5 line-table header that has an invalid FORM for a pathname.","status":"published","published":"2023-04-16T00:15:00Z","modified":"2026-04-22T12:36:05.616807Z","cvss":[{"version":"3.1","score":6.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H","level":"medium"},{"version":"3.1","score":6.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H","level":"medium"}],"updated_at":"2026-11-02T15:54:24.541803Z"}]}}