{"id":"CVE-2023-29421","aliases":["DEBIAN-CVE-2023-29421","EUVD-2023-32990","GHSA-jxf3-h258-gvf9","UBUNTU-CVE-2023-29421"],"status":"published","title":"An issue was discovered in libbzip3.a in bzip3 before 1.2.3. There is an out-of-bounds write in...","description":"An issue was discovered in libbzip3.a in bzip3 before 1.2.3. There is an out-of-bounds write in bz3_decode_block.","severity":{"version":"3.1","score":8.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H","level":"high","assessor":"primary","from":"nvd"},"epss":{"day":"2026-11-11","score":0.00916,"percentile":0.60612,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":true},"cwes":["CWE-787"],"published":"2023-04-06T00:00:00Z","modified":"2026-10-28T02:30:31Z","fixes":[{"ecosystem":"Debian:12","package":"bzip3","fixed_in":["1.2.2-2"],"sources":["osv"]},{"ecosystem":"Debian:13","package":"bzip3","fixed_in":["1.2.2-2"],"sources":["osv"]},{"ecosystem":"Debian:14","package":"bzip3","fixed_in":["1.2.2-2"],"sources":["osv"]}],"affected":[{"source":"osv","ecosystem":"Debian:12","package":"bzip3","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1.2.2-2"}]}]},{"source":"osv","ecosystem":"Debian:13","package":"bzip3","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1.2.2-2"}]}]},{"source":"osv","ecosystem":"Debian:14","package":"bzip3","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1.2.2-2"}]}]},{"source":"osv","ecosystem":"Ubuntu:24.04:LTS","package":"bzip3","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["1.3.1-1","1.3.2-1","1.4.0-1"]}],"products":[{"vendor":"bzip3_project","product":"bzip3"}],"references":[{"url":"https://github.com/kspalaiologos/bzip3/compare/1.2.2...1.2.3","tags":["x_transferred","Release Notes","web","report"]},{"url":"https://github.com/kspalaiologos/bzip3/issues/94","tags":["x_transferred","Exploit","Issue Tracking","Patch","report"]},{"url":"https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/NA7S7HDUAINOTCSWQZ5LIW756DYY22V2/","tags":["vendor-advisory","x_transferred","advisory"]},{"url":"https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/4JLSE25SV7K2NB6FTFT4UHJOJUHBHYHY/","tags":["vendor-advisory","x_transferred","advisory"]},{"url":"https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/NMLFV2FJK3CM7NJLVPZI5RUAFQZICPWW/","tags":["vendor-advisory","x_transferred","advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2023-29421","tags":["advisory"]},{"url":"https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/4JLSE25SV7K2NB6FTFT4UHJOJUHBHYHY"},{"url":"https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/NA7S7HDUAINOTCSWQZ5LIW756DYY22V2"},{"url":"https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/NMLFV2FJK3CM7NJLVPZI5RUAFQZICPWW"},{"url":"https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/4JLSE25SV7K2NB6FTFT4UHJOJUHBHYHY"},{"url":"https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/NA7S7HDUAINOTCSWQZ5LIW756DYY22V2"},{"url":"https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/NMLFV2FJK3CM7NJLVPZI5RUAFQZICPWW"},{"url":"https://github.com/advisories/GHSA-jxf3-h258-gvf9"},{"url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2023/29xxx/CVE-2023-29421.json","tags":["advisory"]},{"url":"https://security-tracker.debian.org/tracker/CVE-2023-29421","tags":["advisory"]},{"url":"https://ubuntu.com/security/CVE-2023-29421","tags":["report"]},{"url":"https://github.com/kspalaiologos/bzip3/commit/33b1951f153c3c5dc8ed736b9110437e1a619b7d","tags":["report"]},{"url":"https://www.cve.org/CVERecord?id=CVE-2023-29421","tags":["report"]}],"sources":{"cve":[{"id":"CVE-2023-29421","description":"An issue was discovered in libbzip3.a in bzip3 before 1.2.3. There is an out-of-bounds write in bz3_decode_block.","status":"published","published":"2023-04-06T00:00:00Z","modified":"2025-02-12T16:25:40.386Z","cvss":[{"version":"3.1","score":8.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H","level":"high","assessor":"adp"}],"cwes":["CWE-787"],"updated_at":"2026-11-02T14:35:28.643185Z"}],"euvd":[{"id":"EUVD-2023-32990","description":"An issue was discovered in libbzip3.a in bzip3 before 1.2.3. There is an out-of-bounds write in bz3_decode_block.","status":"published","published":"2023-04-06T00:00:00Z","modified":"2025-02-12T16:25:40Z","cvss":[{"version":"3.1","score":8.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H","level":"high"}],"updated_at":"2026-11-03T00:03:57.825751Z"}],"ghsa":[{"id":"GHSA-jxf3-h258-gvf9","title":"An issue was discovered in libbzip3.a in bzip3 before 1.2.3. There is an out-of-bounds write in...","description":"An issue was discovered in libbzip3.a in bzip3 before 1.2.3. There is an out-of-bounds write in bz3_decode_block.","status":"published","published":"2023-04-06T06:30:19Z","modified":"2025-02-12T18:32:27Z","cvss":[{"version":"3.1","score":8.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H","level":"high"}],"cwes":["CWE-787"],"updated_at":"2026-11-02T14:59:54.827515Z"}],"nvd":[{"id":"CVE-2023-29421","description":"An issue was discovered in libbzip3.a in bzip3 before 1.2.3. There is an out-of-bounds write in bz3_decode_block.","status":"published","published":"2023-04-06T05:15:07.653Z","modified":"2026-06-17T05:50:01.25Z","cvss":[{"version":"3.1","score":8.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H","level":"high","assessor":"primary"},{"version":"3.1","score":8.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H","level":"high","assessor":"secondary"}],"cwes":["CWE-787"],"updated_at":"2026-11-02T14:07:53.719171Z"}],"osv":[{"id":"CVE-2023-29421","description":"An issue was discovered in libbzip3.a in bzip3 before 1.2.3. There is an out-of-bounds write in bz3_decode_block.","status":"published","published":"2023-04-06T00:00:00Z","modified":"2026-10-28T02:30:31.490906195Z","cvss":[{"version":"3.1","score":8.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H","level":"high"}],"updated_at":"2026-11-02T15:44:31.468318Z"},{"id":"DEBIAN-CVE-2023-29421","description":"An issue was discovered in libbzip3.a in bzip3 before 1.2.3. There is an out-of-bounds write in bz3_decode_block.","status":"published","published":"2023-04-06T05:15:07.653Z","modified":"2026-10-26T18:00:50.192353207Z","cvss":[{"version":"3.1","score":8.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H","level":"high"}],"updated_at":"2026-11-02T15:45:39.679062Z"},{"id":"UBUNTU-CVE-2023-29421","description":"An issue was discovered in libbzip3.a in bzip3 before 1.2.3. There is an out-of-bounds write in bz3_decode_block.","status":"published","published":"2023-04-06T05:15:00Z","modified":"2026-04-22T14:05:36.903016Z","cvss":[{"version":"3.1","score":8.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H","level":"high"},{"version":"3.1","score":8.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H","level":"high"}],"updated_at":"2026-11-02T16:54:20.997471Z"}]}}
