{"id":"CVE-2019-20051","aliases":["DEBIAN-CVE-2019-20051","EUVD-2019-10607","GHSA-4pmq-77vh-vh7v","MGASA-2020-0096","UBUNTU-CVE-2019-20051"],"status":"published","title":"A floating-point exception was discovered in PackLinuxElf::elf_hash in p_lx_elf.cpp in UPX 3.95....","description":"A floating-point exception was discovered in PackLinuxElf::elf_hash in p_lx_elf.cpp in UPX 3.95. The vulnerability causes an application crash, which leads to denial of service.","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":"2026-11-09","score":0.00898,"percentile":0.59871,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":true},"cwes":["CWE-682"],"published":"2019-12-27T21:59:01Z","modified":"2026-10-20T10:52:34Z","fixes":[{"ecosystem":"Debian:13","package":"upx-ucl","fixed_in":["3.96-1"],"sources":["osv"]},{"ecosystem":"Debian:14","package":"upx-ucl","fixed_in":["3.96-1"],"sources":["osv"]}],"affected":[{"source":"osv","ecosystem":"Debian:13","package":"upx-ucl","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"3.96-1"}]}]},{"source":"osv","ecosystem":"Debian:14","package":"upx-ucl","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"3.96-1"}]}]},{"source":"osv","ecosystem":"Mageia:7","package":"upx","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"3.96-1.mga7"}]}],"bundled":5},{"source":"osv","ecosystem":"Mageia:7","package":"ucl","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1.03-16.1.mga7"}]}],"bundled":5},{"source":"osv","ecosystem":"Ubuntu:16.04:LTS","package":"upx-ucl","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["3.91-1"]},{"source":"osv","ecosystem":"Ubuntu:18.04:LTS","package":"upx-ucl","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["3.94-2","3.94-3","3.94-4"]},{"source":"osv","ecosystem":"Ubuntu:20.04:LTS","package":"upx-ucl","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["3.95-2","3.95-2build1"]}],"products":[{"vendor":"fedoraproject","product":"fedora"},{"vendor":"upx","product":"upx"}],"references":[{"url":"https://github.com/upx/upx/issues/313","tags":["x_refsource_MISC","x_transferred","Exploit","Issue Tracking","Third Party Advisory","report"]},{"url":"https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/D7XU42G6MUQQXHWRP7DCF2JSIBOJ5GOO/","tags":["vendor-advisory","x_refsource_FEDORA","x_transferred","web"]},{"url":"https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/EUTVSTXAFTD552NO2K2RIF6MDQEHP3BE/","tags":["vendor-advisory","x_refsource_FEDORA","x_transferred","web"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2019-20051"},{"url":"https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/D7XU42G6MUQQXHWRP7DCF2JSIBOJ5GOO"},{"url":"https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/EUTVSTXAFTD552NO2K2RIF6MDQEHP3BE"},{"url":"https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/D7XU42G6MUQQXHWRP7DCF2JSIBOJ5GOO"},{"url":"https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/EUTVSTXAFTD552NO2K2RIF6MDQEHP3BE"},{"url":"https://github.com/advisories/GHSA-4pmq-77vh-vh7v"},{"url":"https://security-tracker.debian.org/tracker/CVE-2019-20051","tags":["advisory"]},{"url":"https://advisories.mageia.org/MGASA-2020-0096.html","tags":["advisory"]},{"url":"https://bugs.mageia.org/show_bug.cgi?id=26172","tags":["report"]},{"url":"https://lists.opensuse.org/opensuse-updates/2020-02/msg00012.html","tags":["web"]},{"url":"https://lists.opensuse.org/opensuse-updates/2020-02/msg00006.html","tags":["web"]},{"url":"https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/thread/D7XU42G6MUQQXHWRP7DCF2JSIBOJ5GOO/","tags":["web"]},{"url":"https://ubuntu.com/security/CVE-2019-20051","tags":["report"]},{"url":"https://www.cve.org/CVERecord?id=CVE-2019-20051","tags":["report"]}],"sources":{"cve":[{"id":"CVE-2019-20051","description":"A floating-point exception was discovered in PackLinuxElf::elf_hash in p_lx_elf.cpp in UPX 3.95. The vulnerability causes an application crash, which leads to denial of service.","status":"published","published":"2019-12-27T21:59:01Z","modified":"2024-08-05T02:32:10.481Z","updated_at":"2026-11-02T14:20:17.11067Z"}],"euvd":[{"id":"EUVD-2019-10607","description":"A floating-point exception was discovered in PackLinuxElf::elf_hash in p_lx_elf.cpp in UPX 3.95. The vulnerability causes an application crash, which leads to denial of service.","status":"published","published":"2019-12-27T21:59:01Z","modified":"2024-08-05T02:32:10Z","updated_at":"2026-11-03T02:40:23.251012Z"}],"ghsa":[{"id":"GHSA-4pmq-77vh-vh7v","title":"A floating-point exception was discovered in PackLinuxElf::elf_hash in p_lx_elf.cpp in UPX 3.95....","description":"A floating-point exception was discovered in PackLinuxElf::elf_hash in p_lx_elf.cpp in UPX 3.95. The vulnerability causes an application crash, which leads to denial of service.","status":"published","published":"2022-05-24T17:05:12Z","modified":"2025-04-11T12:32:45Z","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-682"],"updated_at":"2026-11-02T15:01:16.487496Z"}],"nvd":[{"id":"CVE-2019-20051","description":"A floating-point exception was discovered in PackLinuxElf::elf_hash in p_lx_elf.cpp in UPX 3.95. The vulnerability causes an application crash, which leads to denial of service.","status":"published","published":"2019-12-27T22:15:11.347Z","modified":"2026-06-17T02:29:54.127Z","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"},{"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-682"],"updated_at":"2026-11-02T14:05:41.313583Z"}],"osv":[{"id":"CVE-2019-20051","description":"A floating-point exception was discovered in PackLinuxElf::elf_hash in p_lx_elf.cpp in UPX 3.95. The vulnerability causes an application crash, which leads to denial of service.","status":"published","published":"2019-12-27T22:15:11.347Z","modified":"2026-10-20T10:52:34.956972265Z","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":"2026-11-02T15:44:12.010761Z"},{"id":"DEBIAN-CVE-2019-20051","description":"A floating-point exception was discovered in PackLinuxElf::elf_hash in p_lx_elf.cpp in UPX 3.95. The vulnerability causes an application crash, which leads to denial of service.","status":"published","published":"2019-12-27T22:15:11.347Z","modified":"2026-09-21T07:01:19.186949082Z","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":"2026-11-02T15:45:32.221385Z"},{"id":"UBUNTU-CVE-2019-20051","description":"A floating-point exception was discovered in PackLinuxElf::elf_hash in p_lx_elf.cpp in UPX 3.95. The vulnerability causes an application crash, which leads to denial of service.","status":"published","published":"2019-12-27T22:15:00Z","modified":"2025-10-24T04:48:07Z","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":"2026-11-02T15:54:21.213407Z"},{"id":"MGASA-2020-0096","title":"Updated upx packages fix security vulnerabilities","description":"The updated packages fix security vulnerabilities:\n\nPackLinuxElf64::unpack in p_lx_elf.cpp in UPX 3.95 allows remote attackers\nto cause a denial of service (double free), limit the ability of a malware\nscanner to operate on the entire original data, or possibly have\n unspecified other impact via a crafted file. (CVE-2018-11243)\n\nA heap-based buffer over-read was discovered in canUnpack in p_mach.cpp in\nUPX 3.95 via a crafted Mach-O file. (CVE-2019-20021)\n\nA floating-point exception was discovered in PackLinuxElf::elf_hash in\np_lx_elf.cpp in UPX 3.95. The vulnerability causes an application crash,\nwhich leads to denial of service. (CVE-2019-20051)\n\nAn invalid memory address dereference was discovered in the canUnpack\nfunction in p_mach.cpp in UPX 3.95 via a crafted Mach-O file.\n(CVE-2019-20053)\n\nA denial of service in PackLinuxElf32::PackLinuxElf32help1().\n(CVE-2019-1010048)\n","status":"published","published":"2020-02-24T21:44:46Z","modified":"2026-04-16T04:44:21.897306494Z","updated_at":"2026-11-02T15:49:41.151324Z"}]}}