{"id":"CVE-2021-3756","aliases":["DEBIAN-CVE-2021-3756","EUVD-2021-27030","GHSA-ph84-4hmc-hhqm","ROOT-OS-DEBIAN-11-CVE-2021-3756","UBUNTU-CVE-2021-3756","USN-5184-1","openSUSE-SU-2024:11673-1"],"status":"published","title":"Heap-based Buffer Overflow in hoene/libmysofa","description":"libmysofa is vulnerable to Heap-based Buffer Overflow","severity":{"version":"3.0","score":6.2,"vector":"CVSS:3.0/AV:L/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:H","level":"medium","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-09","score":0.01069,"percentile":0.65064,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":true},"cwes":["CWE-122","CWE-787"],"published":"2021-10-29T15:55:10Z","modified":"2026-11-09T10:45:22Z","fixes":[{"ecosystem":"Debian:12","package":"libmysofa","fixed_in":["1.2.1~dfsg0-1"],"sources":["osv"]},{"ecosystem":"Debian:13","package":"libmysofa","fixed_in":["1.2.1~dfsg0-1"],"sources":["osv"]},{"ecosystem":"Debian:14","package":"libmysofa","fixed_in":["1.2.1~dfsg0-1"],"sources":["osv"]},{"ecosystem":"Root:Debian:11","package":"libmysofa","fixed_in":["1.2~dfsg0-1.root.io.2","1.2~dfsg0-1.root.io.3","1.2~dfsg0-1.root.io.4","1.2~dfsg0-1.aikido.6","1.2~dfsg0-1.root.io.1","1.2~dfsg0-1.root.io.5"],"sources":["osv"]},{"ecosystem":"Root:Debian:11","package":"rootio-libmysofa","fixed_in":["1.2~dfsg0-1.root.io.2","1.2~dfsg0-1.root.io.3","1.2~dfsg0-1.root.io.4","1.2~dfsg0-1.aikido.6","1.2~dfsg0-1.root.io.1","1.2~dfsg0-1.root.io.5"],"sources":["osv"]},{"ecosystem":"Ubuntu:Pro:18.04:LTS","package":"libmysofa","fixed_in":["0.6~dfsg0-3+deb10u1ubuntu0.1~esm1"],"sources":["osv"]},{"ecosystem":"Ubuntu:Pro:20.04:LTS","package":"libmysofa","fixed_in":["1.0~dfsg0-1ubuntu0.1~esm1"],"sources":["osv"]},{"ecosystem":"Ubuntu:22.04:LTS","package":"libmysofa","fixed_in":["1.2.1~dfsg0-1"],"sources":["osv"]}],"affected":[{"source":"osv","ecosystem":"Debian:12","package":"libmysofa","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1.2.1~dfsg0-1"}]}]},{"source":"osv","ecosystem":"Debian:13","package":"libmysofa","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1.2.1~dfsg0-1"}]}]},{"source":"osv","ecosystem":"Debian:14","package":"libmysofa","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1.2.1~dfsg0-1"}]}]},{"source":"osv","ecosystem":"Root:Debian:11","package":"libmysofa","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1.2~dfsg0-1.root.io.2"},{"fixed":"1.2~dfsg0-1.root.io.3"},{"fixed":"1.2~dfsg0-1.root.io.4"},{"fixed":"1.2~dfsg0-1.aikido.6"},{"fixed":"1.2~dfsg0-1.root.io.1"},{"fixed":"1.2~dfsg0-1.root.io.5"}]}]},{"source":"osv","ecosystem":"Root:Debian:11","package":"rootio-libmysofa","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1.2~dfsg0-1.root.io.2"},{"fixed":"1.2~dfsg0-1.root.io.3"},{"fixed":"1.2~dfsg0-1.root.io.4"},{"fixed":"1.2~dfsg0-1.aikido.6"},{"fixed":"1.2~dfsg0-1.root.io.1"},{"fixed":"1.2~dfsg0-1.root.io.5"}]}]},{"source":"osv","ecosystem":"Ubuntu:Pro:18.04:LTS","package":"libmysofa","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"0.6~dfsg0-3+deb10u1ubuntu0.1~esm1"}]}],"versions":["0.6~dfsg0-1","0.6~dfsg0-2","0.6~dfsg0-2ubuntu0.18.04.1","0.6~dfsg0-3+deb10u1build1"]},{"source":"osv","ecosystem":"Ubuntu:Pro:20.04:LTS","package":"libmysofa","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1.0~dfsg0-1ubuntu0.1~esm1"}]}],"versions":["0.7~dfsg0-1","0.8~dfsg0-1","0.9~dfsg0-1","0.9.1~dfsg0-1","1.0~dfsg0-1"]},{"source":"osv","ecosystem":"Ubuntu:22.04:LTS","package":"libmysofa","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1.2.1~dfsg0-1"}]}],"versions":["1.2~dfsg0-1"]},{"source":"osv","ecosystem":"Ubuntu:Pro:18.04:LTS","package":"libmysofa","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"0.6~dfsg0-3+deb10u1ubuntu0.1~esm1"}]}],"versions":["0.6~dfsg0-1","0.6~dfsg0-2","0.6~dfsg0-2ubuntu0.18.04.1","0.6~dfsg0-3+deb10u1build1"]},{"source":"osv","ecosystem":"Ubuntu:Pro:20.04:LTS","package":"libmysofa","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1.0~dfsg0-1ubuntu0.1~esm1"}]}],"versions":["0.7~dfsg0-1","0.8~dfsg0-1","0.9~dfsg0-1","0.9.1~dfsg0-1","1.0~dfsg0-1"]}],"products":[{"vendor":"fedoraproject","product":"fedora"},{"vendor":"hoene","product":"hoene/libmysofa"},{"vendor":"symonics","product":"libmysofa"}],"references":[{"url":"https://huntr.dev/bounties/7ca8d9ea-e2a6-4294-af28-70260bb53bc1","tags":["x_refsource_CONFIRM","x_transferred","Exploit","Issue Tracking","Patch","Third Party Advisory","fix","report"]},{"url":"https://github.com/hoene/libmysofa/commit/890400ebd092c574707d0c132124f8ff047e20e1","tags":["x_refsource_MISC","x_transferred","Patch","Third Party Advisory","fix","report"]},{"url":"https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/WGY7TAZX2M4NYXXGNHIBBKKN5XMSMKQ4/","tags":["vendor-advisory","x_refsource_FEDORA","x_transferred","web"]},{"url":"https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/PGQ45S4RH7MC42NHTAGOIHYR4C5IRTMZ/","tags":["vendor-advisory","x_refsource_FEDORA","x_transferred","web"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2021-3756"},{"url":"https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/PGQ45S4RH7MC42NHTAGOIHYR4C5IRTMZ/"},{"url":"https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/WGY7TAZX2M4NYXXGNHIBBKKN5XMSMKQ4/"},{"url":"https://github.com/advisories/GHSA-ph84-4hmc-hhqm"},{"url":"https://security-tracker.debian.org/tracker/CVE-2021-3756","tags":["advisory"]},{"url":"https://ubuntu.com/security/CVE-2021-3756","tags":["report"]},{"url":"https://huntr.dev/bounties/7ca8d9ea-e2a6-4294-af28-70260bb53bc1/","tags":["report"]},{"url":"https://ubuntu.com/security/notices/USN-5184-1","tags":["advisory"]},{"url":"https://www.cve.org/CVERecord?id=CVE-2021-3756","tags":["report"]},{"url":"","tags":["advisory"]},{"url":"https://www.suse.com/security/cve/CVE-2021-3756","tags":["web"]}],"sources":{"cve":[{"id":"CVE-2021-3756","title":"Heap-based Buffer Overflow in hoene/libmysofa","description":"libmysofa is vulnerable to Heap-based Buffer Overflow","status":"published","published":"2021-10-29T15:55:10Z","modified":"2024-08-03T17:09:08.791Z","cvss":[{"version":"3.0","score":6.2,"vector":"CVSS:3.0/AV:L/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:H","level":"medium","assessor":"cna"}],"cwes":["CWE-122"],"updated_at":"2026-11-02T14:33:03.671751Z"}],"euvd":[{"id":"EUVD-2021-27030","description":"libmysofa is vulnerable to Heap-based Buffer Overflow","status":"published","published":"2021-10-29T15:55:10Z","modified":"2024-08-03T17:09:08Z","cvss":[{"version":"3.0","score":6.2,"vector":"CVSS:3.0/AV:L/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:H","level":"medium"}],"updated_at":"2026-11-03T03:25:11.953192Z"}],"ghsa":[{"id":"GHSA-ph84-4hmc-hhqm","title":"libmysofa is vulnerable to Heap-based Buffer Overflow","description":"libmysofa is vulnerable to Heap-based Buffer Overflow","status":"published","published":"2022-05-24T19:19:13Z","modified":"2023-01-30T05:03:30Z","cwes":["CWE-122","CWE-787"],"updated_at":"2026-11-02T14:46:50.963031Z"}],"nvd":[{"id":"CVE-2021-3756","description":"libmysofa is vulnerable to Heap-based Buffer Overflow","status":"published","published":"2021-10-29T16:15:07.537Z","modified":"2026-06-17T04:05:42.343Z","cvss":[{"version":"3.1","score":9.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","level":"critical","assessor":"primary"},{"version":"3.0","score":6.2,"vector":"CVSS:3.0/AV:L/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:H","level":"medium","assessor":"secondary"},{"version":"2.0","score":7.5,"vector":"AV:N/AC:L/Au:N/C:P/I:P/A:P","level":"high","assessor":"primary"}],"cwes":["CWE-122","CWE-787"],"updated_at":"2026-11-02T14:07:00.549994Z"}],"osv":[{"id":"CVE-2021-3756","description":"libmysofa is vulnerable to Heap-based Buffer Overflow","status":"published","published":"2021-10-29T16:15:07.537Z","modified":"2026-11-10T07:04:20.549802019Z","cvss":[{"version":"3.1","score":9.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","level":"critical"}],"updated_at":"2026-11-09T10:53:57.550641Z"},{"id":"DEBIAN-CVE-2021-3756","description":"libmysofa is vulnerable to Heap-based Buffer Overflow","status":"published","published":"2021-10-29T16:15:07.537Z","modified":"2026-10-23T18:03:30.327192769Z","cvss":[{"version":"3.1","score":9.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","level":"critical"}],"updated_at":"2026-11-02T15:45:35.521549Z"},{"id":"UBUNTU-CVE-2021-3756","description":"libmysofa is vulnerable to Heap-based Buffer Overflow","status":"published","published":"2021-10-29T16:15:00Z","modified":"2026-04-22T12:58:26.44273Z","cvss":[{"version":"3.0","score":6.2,"vector":"CVSS:3.0/AV:L/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:H","level":"medium"},{"version":"3.1","score":9.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","level":"critical"}],"updated_at":"2026-11-02T15:54:28.526929Z"},{"id":"openSUSE-SU-2024:11673-1","title":"libmysofa-devel-1.2.1-1.1 on GA media","description":"These are all security issues fixed in the libmysofa-devel-1.2.1-1.1 package on the GA media of openSUSE Tumbleweed.","status":"published","published":"2024-06-15T00:00:00Z","modified":"2026-02-04T03:03:57.958143Z","updated_at":"2026-11-02T16:58:35.195147Z"},{"id":"ROOT-OS-DEBIAN-11-CVE-2021-3756","title":"CVE-2021-3756 in libmysofa - Patched by Root","description":"Root has patched CVE-2021-3756 in the libmysofa package for Root:Debian:11. Multiple fixed versions available.","status":"published","published":"2026-08-20T16:05:02Z","modified":"2026-08-20T17:30:06.737090874Z","updated_at":"2026-11-02T15:53:28.544053Z"},{"id":"USN-5184-1","title":"libmysofa vulnerability","description":"It was discovered that libmysofa mishandled certain input. An attacker could\nuse this vulnerability to cause a denial of service (crash).\n","status":"published","published":"2021-12-08T19:05:50Z","modified":"2026-04-22T10:19:37.230539Z","updated_at":"2026-11-02T16:58:15.683829Z"}]}}
