{"id":"CVE-2021-32439","aliases":["DEBIAN-CVE-2021-32439","EUVD-2021-19293","GHSA-x85c-cwhm-2hg9","UBUNTU-CVE-2021-32439"],"status":"published","title":"Buffer overflow in the stbl_AppendSize function in MP4Box in GPAC 1.0.1 allows attackers to cause...","description":"Buffer overflow in the stbl_AppendSize function in MP4Box in GPAC 1.0.1 allows attackers to cause a denial of service or execute arbitrary code via a crafted file.","severity":{"version":"3.1","score":7.8,"vector":"CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H","level":"high","assessor":"primary","from":"nvd"},"epss":{"day":"2026-11-11","score":0.01271,"percentile":0.70205,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-120"],"published":"2021-08-11T19:53:26Z","modified":"2026-10-20T14:23:43Z","affected":[{"source":"osv","ecosystem":"Debian:11","package":"gpac","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["1.0.1+dfsg1-4","1.0.1+dfsg1-4+deb11u1","1.0.1+dfsg1-4+deb11u2","1.0.1+dfsg1-4+deb11u3","1.0.1+dfsg1-5","2.0.0+dfsg1-1","2.0.0+dfsg1-2","2.0.0+dfsg1-4","2.2.1+dfsg1-1","2.2.1+dfsg1-2","2.2.1+dfsg1-3","2.2.1+dfsg1-3.1","2.2.1+dfsg1-3.1~exp1"]},{"source":"osv","ecosystem":"Ubuntu:Pro:14.04:LTS","package":"gpac","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["0.5.0+svn4288~dfsg1-1ubuntu1","0.5.0+svn4288~dfsg1-4","0.5.0+svn4288~dfsg1-4ubuntu1","0.5.0+svn4288~dfsg1-4ubuntu1+esm1","0.5.0+svn4288~dfsg1-4ubuntu1+esm2"]},{"source":"osv","ecosystem":"Ubuntu:Pro:16.04:LTS","package":"gpac","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["0.5.2-426-gc5ad4e4+dfsg5-1build1","0.5.2-426-gc5ad4e4+dfsg5-1ubuntu0.1","0.5.2-426-gc5ad4e4+dfsg5-1ubuntu0.1+esm2"]},{"source":"osv","ecosystem":"Ubuntu:Pro:18.04:LTS","package":"gpac","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["0.5.2-426-gc5ad4e4+dfsg5-3","0.5.2-426-gc5ad4e4+dfsg5-3ubuntu0.1","0.5.2-426-gc5ad4e4+dfsg5-3ubuntu0.1+esm1"]},{"source":"osv","ecosystem":"Ubuntu:20.04:LTS","package":"ccextractor","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["0.87+ds1-1"]},{"source":"osv","ecosystem":"Ubuntu:Pro:20.04:LTS","package":"gpac","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["0.5.2-426-gc5ad4e4+dfsg5-4ubuntu1","0.5.2-426-gc5ad4e4+dfsg5-5","0.5.2-426-gc5ad4e4+dfsg5-5ubuntu0.1~esm2"]},{"source":"osv","ecosystem":"Ubuntu:22.04:LTS","package":"ccextractor","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["0.88+ds1-1","0.93+ds2-1","0.93+ds2-1ubuntu1","0.93+ds2-2"]},{"source":"osv","ecosystem":"Ubuntu:Pro:22.04:LTS","package":"gpac","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["1.0.1+dfsg1-4","1.0.1+dfsg1-5","2.0.0+dfsg1-2","2.0.0+dfsg1-2ubuntu0.1~esm2"]},{"source":"osv","ecosystem":"Ubuntu:24.04:LTS","package":"ccextractor","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["0.94+ds1-3","0.94+ds1-3build2","0.94+ds1-3build3"]},{"source":"osv","ecosystem":"Ubuntu:Pro:24.04:LTS","package":"gpac","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["2.2.1+dfsg1-3","2.2.1+dfsg1-3.1","2.2.1+dfsg1-3.1build1","2.2.1+dfsg1-3.1build2","2.2.1+dfsg1-3.1ubuntu0.1~esm2"]}],"products":[{"vendor":"gpac","product":"gpac"}],"references":[{"url":"https://github.com/gpac/gpac/issues/1774","tags":["x_refsource_MISC","x_transferred","Exploit","Issue Tracking","Third Party Advisory","report"]},{"url":"https://github.com/gpac/gpac/commit/77ed81c069e10b3861d88f72e1c6be1277ee7eae","tags":["x_refsource_MISC","x_transferred","Patch","Third Party Advisory","fix","report"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2021-32439"},{"url":"https://github.com/advisories/GHSA-x85c-cwhm-2hg9"},{"url":"https://security-tracker.debian.org/tracker/CVE-2021-32439","tags":["advisory"]},{"url":"https://ubuntu.com/security/CVE-2021-32439","tags":["report"]},{"url":"https://www.cve.org/CVERecord?id=CVE-2021-32439","tags":["report"]}],"sources":{"cve":[{"id":"CVE-2021-32439","description":"Buffer overflow in the stbl_AppendSize function in MP4Box in GPAC 1.0.1 allows attackers to cause a denial of service or execute arbitrary code via a crafted file.","status":"published","published":"2021-08-11T19:53:26Z","modified":"2024-08-03T23:17:29.454Z","updated_at":"2026-11-02T14:33:07.014772Z"}],"euvd":[{"id":"EUVD-2021-19293","description":"Buffer overflow in the stbl_AppendSize function in MP4Box in GPAC 1.0.1 allows attackers to cause a denial of service or execute arbitrary code via a crafted file.","status":"published","published":"2021-08-11T19:53:26Z","modified":"2024-08-03T23:17:29Z","updated_at":"2026-11-03T03:24:36.852603Z"}],"ghsa":[{"id":"GHSA-x85c-cwhm-2hg9","title":"Buffer overflow in the stbl_AppendSize function in MP4Box in GPAC 1.0.1 allows attackers to cause...","description":"Buffer overflow in the stbl_AppendSize function in MP4Box in GPAC 1.0.1 allows attackers to cause a denial of service or execute arbitrary code via a crafted file.","status":"published","published":"2022-05-24T19:10:40Z","modified":"2023-01-30T05:01:30Z","cwes":["CWE-120"],"updated_at":"2026-11-02T14:46:25.569206Z"}],"nvd":[{"id":"CVE-2021-32439","description":"Buffer overflow in the stbl_AppendSize function in MP4Box in GPAC 1.0.1 allows attackers to cause a denial of service or execute arbitrary code via a crafted file.","status":"published","published":"2021-08-11T20:15:09.013Z","modified":"2026-06-17T03:52:57.957Z","cvss":[{"version":"3.1","score":7.8,"vector":"CVSS:3.1/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-120"],"updated_at":"2026-11-02T14:06:56.943671Z"}],"osv":[{"id":"CVE-2021-32439","description":"Buffer overflow in the stbl_AppendSize function in MP4Box in GPAC 1.0.1 allows attackers to cause a denial of service or execute arbitrary code via a crafted file.","status":"published","published":"2021-08-11T20:15:09.013Z","modified":"2026-10-20T14:23:43.700119086Z","cvss":[{"version":"3.1","score":7.8,"vector":"CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H","level":"high"}],"updated_at":"2026-11-02T15:44:19.793849Z"},{"id":"DEBIAN-CVE-2021-32439","description":"Buffer overflow in the stbl_AppendSize function in MP4Box in GPAC 1.0.1 allows attackers to cause a denial of service or execute arbitrary code via a crafted file.","status":"published","published":"2021-08-11T20:15:09.013Z","modified":"2026-08-27T23:04:02.766030368Z","cvss":[{"version":"3.1","score":7.8,"vector":"CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H","level":"high"}],"updated_at":"2026-11-02T15:45:35.233346Z"},{"id":"UBUNTU-CVE-2021-32439","description":"Buffer overflow in the stbl_AppendSize function in MP4Box in GPAC 1.0.1 allows attackers to cause a denial of service or execute arbitrary code via a crafted file.","status":"published","published":"2021-08-11T20:15:00Z","modified":"2026-04-22T12:53:36.801506Z","cvss":[{"version":"3.1","score":7.8,"vector":"CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H","level":"high"}],"updated_at":"2026-11-02T15:54:27.332852Z"}]}}
