{"id":"CVE-2021-27345","aliases":["ALPINE-CVE-2021-27345","DEBIAN-CVE-2021-27345","DLA-2981-1","EUVD-2021-14105","GHSA-7h9p-4h36-3h37","UBUNTU-CVE-2021-27345","USN-5840-1"],"status":"published","title":"A null pointer dereference was discovered in ucompthread in stream.c in Irzip 0.631 which allows...","description":"A null pointer dereference was discovered in ucompthread in stream.c in Irzip 0.631 which allows attackers to cause a denial of service (DOS) via a crafted compressed file.","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":"2026-11-10","score":0.00719,"percentile":0.54211,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":true},"cwes":["CWE-476"],"published":"2021-06-10T15:45:02Z","modified":"2026-11-03T06:32:32Z","fixes":[{"ecosystem":"Alpine:v3.17","package":"lrzip","fixed_in":["0.640-r0"],"sources":["osv"]},{"ecosystem":"Alpine:v3.18","package":"lrzip","fixed_in":["0.640-r0"],"sources":["osv"]},{"ecosystem":"Alpine:v3.19","package":"lrzip","fixed_in":["0.640-r0"],"sources":["osv"]},{"ecosystem":"Alpine:v3.20","package":"lrzip","fixed_in":["0.640-r0"],"sources":["osv"]},{"ecosystem":"Alpine:v3.21","package":"lrzip","fixed_in":["0.640-r0"],"sources":["osv"]},{"ecosystem":"Alpine:v3.22","package":"lrzip","fixed_in":["0.640-r0"],"sources":["osv"]},{"ecosystem":"Alpine:v3.23","package":"lrzip","fixed_in":["0.640-r0"],"sources":["osv"]},{"ecosystem":"Alpine:v3.24","package":"lrzip","fixed_in":["0.640-r0"],"sources":["osv"]},{"ecosystem":"Debian:12","package":"lrzip","fixed_in":["0.640-1"],"sources":["osv"]},{"ecosystem":"Debian:13","package":"lrzip","fixed_in":["0.640-1"],"sources":["osv"]},{"ecosystem":"Debian:14","package":"lrzip","fixed_in":["0.640-1"],"sources":["osv"]},{"ecosystem":"Ubuntu:18.04:LTS","package":"lrzip","fixed_in":["0.631-1+deb9u3build0.18.04.1"],"sources":["osv"]},{"ecosystem":"Ubuntu:20.04:LTS","package":"lrzip","fixed_in":["0.631+git180528-1+deb10u1build0.20.04.1"],"sources":["osv"]}],"affected":[{"source":"osv","ecosystem":"Alpine:v3.17","package":"lrzip","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"0.640-r0"}]}]},{"source":"osv","ecosystem":"Alpine:v3.18","package":"lrzip","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"0.640-r0"}]}]},{"source":"osv","ecosystem":"Alpine:v3.19","package":"lrzip","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"0.640-r0"}]}]},{"source":"osv","ecosystem":"Alpine:v3.20","package":"lrzip","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"0.640-r0"}]}]},{"source":"osv","ecosystem":"Alpine:v3.21","package":"lrzip","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"0.640-r0"}]}]},{"source":"osv","ecosystem":"Alpine:v3.22","package":"lrzip","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"0.640-r0"}]}]},{"source":"osv","ecosystem":"Alpine:v3.23","package":"lrzip","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"0.640-r0"}]}]},{"source":"osv","ecosystem":"Alpine:v3.24","package":"lrzip","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"0.640-r0"}]}]},{"source":"osv","ecosystem":"Debian:12","package":"lrzip","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"0.640-1"}]}]},{"source":"osv","ecosystem":"Debian:13","package":"lrzip","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"0.640-1"}]}]},{"source":"osv","ecosystem":"Debian:14","package":"lrzip","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"0.640-1"}]}]},{"source":"osv","ecosystem":"Debian:9","package":"lrzip","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"0.631-1+deb9u2"}]}],"versions":["0.631-1","0.631-1+deb9u1"],"bundled":5},{"source":"osv","ecosystem":"Ubuntu:Pro:14.04:LTS","package":"lrzip","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["0.608-2","0.616-1","0.616-1ubuntu0.1~esm","0.616-1ubuntu0.1~esm1","0.616-1ubuntu0.1~esm2"]},{"source":"osv","ecosystem":"Ubuntu:18.04:LTS","package":"lrzip","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"0.631-1+deb9u3build0.18.04.1"}]}],"versions":["0.631-1","0.631-1+deb9u1build0.18.04.1"]},{"source":"osv","ecosystem":"Ubuntu:20.04:LTS","package":"lrzip","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"0.631+git180528-1+deb10u1build0.20.04.1"}]}],"versions":["0.631+git180528-1","0.631+git180528-1build1"]},{"source":"osv","ecosystem":"Ubuntu:Pro:14.04:LTS","package":"lrzip","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"0.616-1ubuntu0.1~esm2"}]}],"versions":["0.608-2","0.616-1","0.616-1ubuntu0.1~esm","0.616-1ubuntu0.1~esm1"],"bundled":6},{"source":"osv","ecosystem":"Ubuntu:Pro:16.04:LTS","package":"lrzip","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"0.621-1ubuntu0.1~esm2"}]}],"versions":["0.621-1","0.621-1ubuntu0.1~esm1"],"bundled":6},{"source":"osv","ecosystem":"Ubuntu:18.04:LTS","package":"lrzip","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"0.631-1+deb9u3build0.18.04.1"}]}],"versions":["0.631-1","0.631-1+deb9u1build0.18.04.1"],"bundled":6},{"source":"osv","ecosystem":"Ubuntu:20.04:LTS","package":"lrzip","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"0.631+git180528-1+deb10u1build0.20.04.1"}]}],"versions":["0.631+git180528-1","0.631+git180528-1build1"],"bundled":6},{"source":"osv","ecosystem":"Ubuntu:22.04:LTS","package":"lrzip","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"0.651-2ubuntu0.22.04.1"}]}],"versions":["0.641-1","0.651-2"],"bundled":6}],"products":[{"vendor":"debian","product":"debian_linux"},{"vendor":"long_range_zip_project","product":"long_range_zip"}],"references":[{"url":"https://github.com/ckolivas/lrzip/issues/164","tags":["x_refsource_MISC","x_transferred","Exploit","Issue Tracking","Patch","Third Party Advisory","fix","report"]},{"url":"https://lists.debian.org/debian-lts-announce/2022/04/msg00012.html","tags":["mailing-list","x_refsource_MLIST","x_transferred","Mailing List","Third Party Advisory","advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2021-27345"},{"url":"https://github.com/advisories/GHSA-7h9p-4h36-3h37"},{"url":"https://security.alpinelinux.org/vuln/CVE-2021-27345","tags":["advisory"]},{"url":"https://security-tracker.debian.org/tracker/CVE-2021-27345","tags":["advisory"]},{"url":"https://ubuntu.com/security/CVE-2021-27345","tags":["report"]},{"url":"https://ubuntu.com/security/notices/USN-5840-1","tags":["advisory"]},{"url":"https://www.cve.org/CVERecord?id=CVE-2021-27345","tags":["report"]},{"url":"https://ubuntu.com/security/CVE-2018-5786","tags":["report"]},{"url":"https://ubuntu.com/security/CVE-2020-25467","tags":["report"]},{"url":"https://ubuntu.com/security/CVE-2021-27347","tags":["report"]},{"url":"https://ubuntu.com/security/CVE-2022-26291","tags":["report"]},{"url":"https://ubuntu.com/security/CVE-2022-28044","tags":["report"]}],"sources":{"cve":[{"id":"CVE-2021-27345","description":"A null pointer dereference was discovered in ucompthread in stream.c in Irzip 0.631 which allows attackers to cause a denial of service (DOS) via a crafted compressed file.","status":"published","published":"2021-06-10T15:45:02Z","modified":"2024-08-03T20:48:16.538Z","updated_at":"2026-11-02T14:33:04.679189Z"}],"euvd":[{"id":"EUVD-2021-14105","description":"A null pointer dereference was discovered in ucompthread in stream.c in Irzip 0.631 which allows attackers to cause a denial of service (DOS) via a crafted compressed file.","status":"published","published":"2021-06-10T15:45:02Z","modified":"2024-08-03T20:48:16Z","updated_at":"2026-11-03T03:24:49.368497Z"}],"ghsa":[{"id":"GHSA-7h9p-4h36-3h37","title":"A null pointer dereference was discovered in ucompthread in stream.c in Irzip 0.631 which allows...","description":"A null pointer dereference was discovered in ucompthread in stream.c in Irzip 0.631 which allows attackers to cause a denial of service (DOS) via a crafted compressed file.","status":"published","published":"2022-05-24T19:04:51Z","modified":"2023-01-29T05:06:59Z","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-476"],"updated_at":"2026-11-02T14:46:07.768849Z"}],"nvd":[{"id":"CVE-2021-27345","description":"A null pointer dereference was discovered in ucompthread in stream.c in Irzip 0.631 which allows attackers to cause a denial of service (DOS) via a crafted compressed file.","status":"published","published":"2021-06-10T16:15:08.067Z","modified":"2026-06-17T03:44:40.393Z","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-476"],"updated_at":"2026-11-02T14:06:54.439974Z"}],"osv":[{"id":"ALPINE-CVE-2021-27345","description":"A null pointer dereference was discovered in ucompthread in stream.c in Irzip 0.631 which allows attackers to cause a denial of service (DOS) via a crafted compressed file.","status":"published","published":"2021-06-10T16:15:08.067Z","modified":"2026-11-03T06:32:32.150249678Z","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":"2026-11-03T07:17:41.158523Z"},{"id":"CVE-2021-27345","description":"A null pointer dereference was discovered in ucompthread in stream.c in Irzip 0.631 which allows attackers to cause a denial of service (DOS) via a crafted compressed file.","status":"published","published":"2021-06-10T16:15:08.067Z","modified":"2026-10-20T10:54:35.249611739Z","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":"2026-11-02T15:44:18.778776Z"},{"id":"DEBIAN-CVE-2021-27345","description":"A null pointer dereference was discovered in ucompthread in stream.c in Irzip 0.631 which allows attackers to cause a denial of service (DOS) via a crafted compressed file.","status":"published","published":"2021-06-10T16:15:08.067Z","modified":"2026-10-23T18:03:25.698796465Z","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":"2026-11-02T15:45:34.94143Z"},{"id":"UBUNTU-CVE-2021-27345","description":"A null pointer dereference was discovered in ucompthread in stream.c in Irzip 0.631 which allows attackers to cause a denial of service (DOS) via a crafted compressed file.","status":"published","published":"2021-06-10T16:15:00Z","modified":"2026-03-13T22:21:25.618146Z","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":"2026-11-02T15:54:26.779273Z"},{"id":"DLA-2981-1","title":"lrzip - security update","status":"published","published":"2022-04-13T00:00:00Z","modified":"2026-03-09T01:23:11.684119Z","updated_at":"2026-11-02T15:46:11.189256Z"},{"id":"USN-5840-1","title":"lrzip vulnerabilities","description":"It was discovered that Long Range ZIP incorrectly handled pointers. If \na user or an automated system were tricked into opening a certain \nspecially crafted ZIP file, an attacker could possibly use this issue\nto cause a denial of service. This issue only affected Ubuntu 14.04 ESM,\nUbuntu 16.04 ESM, Ubuntu 18.04 LTS, and Ubuntu 20.04 LTS. (CVE-2020-25467)\n\nIt was discovered that Long Range ZIP incorrectly handled pointers. If \na user or an automated system were tricked into opening a certain \nspecially crafted ZIP file, an attacker could possibly use this issue \nto cause a denial of service. This issue only affected Ubuntu 18.04 LTS\nand Ubuntu 20.04 LTS. (CVE-2021-27345, CVE-2021-27347)\n\nIt was discovered that Long Range ZIP incorrectly handled pointers. If \na user or an automated system were tricked into opening a certain \nspecially crafted ZIP file, an attacker could possibly use this issue\nto cause a denial of service. This issue only affected Ubuntu 16.04 ESM,\nUbuntu 18.04 LTS, and Ubuntu 20.04 LTS. (CVE-2022-26291)\n\nIt was discovered that Long Range ZIP incorrectly handled memory allocation, \nwhich could lead to a heap memory corruption. An attacker could possibly use\nthis issue to cause denial of service. This issue affected Ubuntu 14.04 ESM,\nUbuntu 16.04 ESM, Ubuntu 18.04 LTS, Ubuntu 20.04 LTS, Ubuntu 22.04 LTS, and \nUbuntu 22.10. (CVE-2022-28044)\n","status":"published","published":"2023-02-02T13:36:09Z","modified":"2026-06-29T13:50:46.347622385Z","updated_at":"2026-11-02T16:58:16.738762Z"}]}}