{"id":"CVE-2023-49556","aliases":["AZL-33355","AZL-35388","DEBIAN-CVE-2023-49556","EUVD-2023-53513","GHSA-q795-pwf5-9r9x","UBUNTU-CVE-2023-49556"],"status":"published","title":"Buffer Overflow vulnerability in YASM 1.3.0.86.g9def allows a remote attacker to cause a denial...","description":"Buffer Overflow vulnerability in YASM 1.3.0.86.g9def allows a remote attacker to cause a denial of service via the expr_delete_term function in the libyasm/expr.c component.","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":"2026-11-11","score":0.00416,"percentile":0.3636,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-120"],"published":"2024-01-02T00:00:00Z","modified":"2026-11-05T05:40:51Z","affected":[{"source":"osv","ecosystem":"Azure Linux:2","package":"yasm","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"last_affected":"1.3.0-17"}]}]},{"source":"osv","ecosystem":"Azure Linux:3","package":"yasm","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"last_affected":"1.3.0-17"}]}]},{"source":"osv","ecosystem":"Debian:12","package":"yasm","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["1.3.0-4","1.3.0-5","1.3.0-6","1.3.0-7","1.3.0-8"]},{"source":"osv","ecosystem":"Debian:13","package":"yasm","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["1.3.0-7","1.3.0-8"]},{"source":"osv","ecosystem":"Debian:14","package":"yasm","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["1.3.0-7","1.3.0-8"]},{"source":"osv","ecosystem":"Ubuntu:16.04:LTS","package":"yasm","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["1.3.0-2"]},{"source":"osv","ecosystem":"Ubuntu:18.04:LTS","package":"yasm","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["1.3.0-2","1.3.0-2build1"]},{"source":"osv","ecosystem":"Ubuntu:20.04:LTS","package":"yasm","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["1.3.0-2build1","1.3.0-2ubuntu1"]},{"source":"osv","ecosystem":"Ubuntu:22.04:LTS","package":"yasm","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["1.3.0-2.1"]},{"source":"osv","ecosystem":"Ubuntu:24.04:LTS","package":"yasm","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["1.3.0-4"]},{"source":"osv","ecosystem":"Ubuntu:25.10","package":"yasm","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["1.3.0-5","1.3.0-7"]},{"source":"osv","ecosystem":"Ubuntu:26.10","package":"yasm","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["1.3.0-8"]},{"source":"osv","ecosystem":"Ubuntu:26.04:LTS","package":"yasm","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["1.3.0-7","1.3.0-8"]}],"products":[{"vendor":"yasm_project","product":"yasm"}],"references":[{"url":"https://github.com/yasm/yasm/issues/250","tags":["x_transferred","Exploit","Vendor Advisory","evidence"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2023-49556","tags":["web"]},{"url":"https://github.com/advisories/GHSA-q795-pwf5-9r9x"},{"url":"https://security-tracker.debian.org/tracker/CVE-2023-49556","tags":["advisory"]},{"url":"https://ubuntu.com/security/CVE-2023-49556","tags":["report"]},{"url":"https://www.cve.org/CVERecord?id=CVE-2023-49556","tags":["report"]}],"sources":{"cve":[{"id":"CVE-2023-49556","description":"Buffer Overflow vulnerability in YASM 1.3.0.86.g9def allows a remote attacker to cause a denial of service via the expr_delete_term function in the libyasm/expr.c component.","status":"published","published":"2024-01-02T00:00:00Z","modified":"2025-06-03T14:52:46.717Z","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":"adp"}],"cwes":["CWE-120"],"updated_at":"2026-11-02T14:35:13.368958Z"}],"euvd":[{"id":"EUVD-2023-53513","description":"Buffer Overflow vulnerability in YASM 1.3.0.86.g9def allows a remote attacker to cause a denial of service via the expr_delete_term function in the libyasm/expr.c component.","status":"published","published":"2024-01-02T00:00:00Z","modified":"2025-06-03T14:52:46Z","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":"2026-11-02T20:32:31.146985Z"}],"ghsa":[{"id":"GHSA-q795-pwf5-9r9x","title":"Buffer Overflow vulnerability in YASM 1.3.0.86.g9def allows a remote attacker to cause a denial...","description":"Buffer Overflow vulnerability in YASM 1.3.0.86.g9def allows a remote attacker to cause a denial of service via the expr_delete_term function in the libyasm/expr.c component.","status":"published","published":"2024-01-03T00:30:24Z","modified":"2025-06-03T15:32:08Z","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-120"],"updated_at":"2026-11-02T15:02:32.612356Z"}],"nvd":[{"id":"CVE-2023-49556","description":"Buffer Overflow vulnerability in YASM 1.3.0.86.g9def allows a remote attacker to cause a denial of service via the expr_delete_term function in the libyasm/expr.c component.","status":"published","published":"2024-01-03T00:15:09.09Z","modified":"2026-06-17T06:36:08.84Z","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":"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":"secondary"}],"cwes":["CWE-120"],"updated_at":"2026-11-02T14:08:59.830468Z"}],"osv":[{"id":"AZL-33355","title":"CVE-2023-49556 affecting package yasm 1.3.0-17","description":"Buffer Overflow vulnerability in YASM 1.3.0.86.g9def allows a remote attacker to cause a denial of service via the expr_delete_term function in the libyasm/expr.c component.","status":"published","published":"2024-01-03T00:15:09Z","modified":"2026-04-21T04:26:49.406634Z","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":"2026-11-02T15:28:03.821827Z"},{"id":"AZL-35388","title":"CVE-2023-49556 affecting package yasm 1.3.0-17","description":"Buffer Overflow vulnerability in YASM 1.3.0.86.g9def allows a remote attacker to cause a denial of service via the expr_delete_term function in the libyasm/expr.c component.","status":"published","published":"2024-01-03T00:15:09Z","modified":"2026-11-05T05:40:51Z","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":"2026-11-05T16:41:19.554273Z"},{"id":"CVE-2023-49556","description":"Buffer Overflow vulnerability in YASM 1.3.0.86.g9def allows a remote attacker to cause a denial of service via the expr_delete_term function in the libyasm/expr.c component.","status":"published","published":"2024-01-03T00:15:09.09Z","modified":"2026-03-14T12:22:57.994963Z","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":"2026-11-02T15:44:34.72355Z"},{"id":"DEBIAN-CVE-2023-49556","description":"Buffer Overflow vulnerability in YASM 1.3.0.86.g9def allows a remote attacker to cause a denial of service via the expr_delete_term function in the libyasm/expr.c component.","status":"published","published":"2024-01-03T00:15:09.09Z","modified":"2026-10-26T18:02:35.167059702Z","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":"2026-11-02T15:45:40.275853Z"},{"id":"UBUNTU-CVE-2023-49556","description":"Buffer Overflow vulnerability in YASM 1.3.0.86.g9def allows a remote attacker to cause a denial of service via the expr_delete_term function in the libyasm/expr.c component.","status":"published","published":"2024-01-03T00:15:00Z","modified":"2026-10-17T12:56:42.869001861Z","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"},{"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":"2026-11-02T16:54:23.935133Z"}]}}