{"id":"CVE-2019-8343","aliases":["BELL-CVE-2019-8343","DEBIAN-CVE-2019-8343","EUVD-2019-17733","GHSA-qcp9-cxhm-8cf6","UBUNTU-CVE-2019-8343"],"status":"published","title":"In Netwide Assembler (NASM) 2.14.02, there is a use-after-free in paste_tokens in asm/preproc.c.","description":"In Netwide Assembler (NASM) 2.14.02, there is a use-after-free in paste_tokens in asm/preproc.c.","severity":{"version":"3.0","score":7.8,"vector":"CVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H","level":"high","assessor":"primary","from":"nvd"},"epss":{"day":"2026-11-08","score":0.01143,"percentile":0.66914,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-416"],"published":"2019-02-15T07:00:00Z","modified":"2026-10-24T10:30:24Z","affected":[{"source":"osv","ecosystem":"Debian:12","package":"nasm","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["2.16.01-1","2.16.03-1","3.01-1"]},{"source":"osv","ecosystem":"Debian:13","package":"nasm","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["2.16.03-1","3.01-1"]},{"source":"osv","ecosystem":"Debian:14","package":"nasm","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["2.16.03-1","3.01-1"]},{"source":"osv","ecosystem":"Ubuntu:16.04:LTS","package":"nasm","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["2.11.06-1really2.11.05-1","2.11.08-1","2.11.08-1ubuntu0.1"]},{"source":"osv","ecosystem":"Ubuntu:18.04:LTS","package":"nasm","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["2.13.01-2","2.13.02-0.1"]},{"source":"osv","ecosystem":"Ubuntu:20.04:LTS","package":"nasm","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["2.14.02-1"]},{"source":"osv","ecosystem":"Ubuntu:Pro:22.04:LTS","package":"nasm","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["2.15.05-1","2.15.05-1ubuntu0.1~esm1","2.15.05-1ubuntu0.1~esm2"]},{"source":"osv","ecosystem":"Ubuntu:Pro:24.04:LTS","package":"nasm","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["2.16.01-1","2.16.01-1build1","2.16.01-1ubuntu0.1~esm1","2.16.01-1ubuntu0.1~esm2"]},{"source":"osv","ecosystem":"Ubuntu:25.10","package":"nasm","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["2.16.03-1"]},{"source":"osv","ecosystem":"Ubuntu:26.10","package":"nasm","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["3.01-1"]},{"source":"osv","ecosystem":"Ubuntu:26.04:LTS","package":"nasm","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["2.16.03-1","3.01-1"]}],"products":[{"vendor":"nasm","product":"netwide_assembler"}],"references":[{"url":"https://bugzilla.nasm.us/show_bug.cgi?id=3392556","tags":["x_transferred","Exploit","Issue Tracking","Third Party Advisory","report"]},{"url":"https://security.gentoo.org/glsa/202312-09","tags":["vendor-advisory","x_transferred","advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2019-8343"},{"url":"https://github.com/advisories/GHSA-qcp9-cxhm-8cf6"},{"url":"https://docs.bell-sw.com/security/cves/CVE-2019-8343","tags":["advisory"]},{"url":"https://security-tracker.debian.org/tracker/CVE-2019-8343","tags":["advisory"]},{"url":"https://ubuntu.com/security/CVE-2019-8343","tags":["report"]},{"url":"https://www.cve.org/CVERecord?id=CVE-2019-8343","tags":["report"]}],"sources":{"cve":[{"id":"CVE-2019-8343","description":"In Netwide Assembler (NASM) 2.14.02, there is a use-after-free in paste_tokens in asm/preproc.c.","status":"published","published":"2019-02-15T07:00:00Z","modified":"2024-09-16T18:33:18.676Z","updated_at":"2026-11-02T14:20:22.019351Z"}],"euvd":[{"id":"EUVD-2019-17733","description":"In Netwide Assembler (NASM) 2.14.02, there is a use-after-free in paste_tokens in asm/preproc.c.","status":"published","published":"2019-02-15T07:00:00Z","modified":"2024-09-16T18:33:18Z","updated_at":"2026-11-03T00:55:31.571078Z"}],"ghsa":[{"id":"GHSA-qcp9-cxhm-8cf6","title":"In Netwide Assembler (NASM) 2.14.02, there is a use-after-free in paste_tokens in asm/preproc.c.","description":"In Netwide Assembler (NASM) 2.14.02, there is a use-after-free in paste_tokens in asm/preproc.c.","status":"published","published":"2022-05-14T01:33:53Z","modified":"2023-12-22T15:30:26Z","cvss":[{"version":"3.0","score":7.8,"vector":"CVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H","level":"high"}],"cwes":["CWE-416"],"updated_at":"2026-11-02T14:55:16.323735Z"}],"nvd":[{"id":"CVE-2019-8343","description":"In Netwide Assembler (NASM) 2.14.02, there is a use-after-free in paste_tokens in asm/preproc.c.","status":"published","published":"2019-02-15T07:29:00.553Z","modified":"2026-06-17T02:41:52.313Z","cvss":[{"version":"3.0","score":7.8,"vector":"CVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H","level":"high","assessor":"primary"},{"version":"2.0","score":6.8,"vector":"AV:N/AC:M/Au:N/C:P/I:P/A:P","level":"medium","assessor":"primary"}],"cwes":["CWE-416"],"updated_at":"2026-11-02T14:05:04.689371Z"}],"osv":[{"id":"BELL-CVE-2019-8343","title":"CVE-2019-8343 does not affect BellSoft software","status":"withdrawn","published":"2019-02-15T07:29:00Z","modified":"2026-01-26T09:50:13.130379Z","cvss":[{"version":"3.0","score":7.8,"vector":"CVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H","level":"high"}],"updated_at":"2026-11-02T15:28:15.340685Z"},{"id":"CVE-2019-8343","description":"In Netwide Assembler (NASM) 2.14.02, there is a use-after-free in paste_tokens in 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asm/preproc.c.","status":"published","published":"2019-02-15T07:29:00Z","modified":"2026-10-17T12:56:09.685385223Z","cvss":[{"version":"3.0","score":7.8,"vector":"CVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H","level":"high"}],"updated_at":"2026-11-02T15:54:21.741399Z"}]}}