{"id":"CVE-2021-45910","aliases":["DEBIAN-CVE-2021-45910","DLA-2937-1","EUVD-2021-32625","GHSA-jfjg-288w-6ffp","UBUNTU-CVE-2021-45910","USN-5969-1"],"status":"published","title":"An issue was discovered in gif2apng 1.9. There is a heap-based buffer overflow within the main...","description":"An issue was discovered in gif2apng 1.9. There is a heap-based buffer overflow within the main function. It allows an attacker to write data outside of the allocated buffer. The attacker has control over a part of the address that data is written to, control over the written data, and (to some extent) control over the amount of data that is written.","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":"2026-11-10","score":0.009,"percentile":0.59956,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":true},"cwes":["CWE-787"],"published":"2021-12-28T00:02:03Z","modified":"2026-08-27T23:04:43Z","fixes":[{"ecosystem":"Debian:11","package":"gif2apng","fixed_in":["1.9+srconly-3+deb11u1"],"sources":["osv"]},{"ecosystem":"Ubuntu:Pro:16.04:LTS","package":"gif2apng","fixed_in":["1.7-3ubuntu0.1~esm1"],"sources":["osv"]},{"ecosystem":"Ubuntu:18.04:LTS","package":"gif2apng","fixed_in":["1.9+srconly-2ubuntu0.1"],"sources":["osv"]},{"ecosystem":"Ubuntu:20.04:LTS","package":"gif2apng","fixed_in":["1.9+srconly-3ubuntu0.1"],"sources":["osv"]}],"affected":[{"source":"osv","ecosystem":"Debian:11","package":"gif2apng","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1.9+srconly-3+deb11u1"}]}],"versions":["1.9+srconly-3"]},{"source":"osv","ecosystem":"Debian:9","package":"gif2apng","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1.9+srconly-2+deb9u2"}]}],"versions":["1.9+srconly-2","1.9+srconly-2+deb9u1"],"bundled":3},{"source":"osv","ecosystem":"Ubuntu:Pro:16.04:LTS","package":"gif2apng","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1.7-3ubuntu0.1~esm1"}]}],"versions":["1.7-3"]},{"source":"osv","ecosystem":"Ubuntu:18.04:LTS","package":"gif2apng","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1.9+srconly-2ubuntu0.1"}]}],"versions":["1.9+srconly-2"]},{"source":"osv","ecosystem":"Ubuntu:20.04:LTS","package":"gif2apng","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1.9+srconly-3ubuntu0.1"}]}],"versions":["1.9+srconly-3","1.9+srconly-3build1"]},{"source":"osv","ecosystem":"Ubuntu:Pro:16.04:LTS","package":"gif2apng","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1.7-3ubuntu0.1~esm1"}]}],"versions":["1.7-3"],"bundled":3},{"source":"osv","ecosystem":"Ubuntu:18.04:LTS","package":"gif2apng","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1.9+srconly-2ubuntu0.1"}]}],"versions":["1.9+srconly-2"],"bundled":3},{"source":"osv","ecosystem":"Ubuntu:20.04:LTS","package":"gif2apng","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1.9+srconly-3ubuntu0.1"}]}],"versions":["1.9+srconly-3","1.9+srconly-3build1"],"bundled":3}],"products":[{"vendor":"debian","product":"debian_linux"},{"vendor":"gif2apng_project","product":"gif2apng"}],"references":[{"url":"https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=1002667","tags":["x_refsource_MISC","x_transferred","Exploit","Issue Tracking","Mailing List","Third Party Advisory","report"]},{"url":"https://lists.debian.org/debian-lts-announce/2022/03/msg00008.html","tags":["mailing-list","x_refsource_MLIST","x_transferred","Mailing List","Third Party Advisory","advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2021-45910"},{"url":"https://github.com/advisories/GHSA-jfjg-288w-6ffp"},{"url":"https://security-tracker.debian.org/tracker/CVE-2021-45910","tags":["advisory"]},{"url":"https://ubuntu.com/security/CVE-2021-45910","tags":["report"]},{"url":"https://ubuntu.com/security/notices/USN-5969-1","tags":["advisory"]},{"url":"https://www.cve.org/CVERecord?id=CVE-2021-45910","tags":["report"]},{"url":"https://ubuntu.com/security/CVE-2021-45909","tags":["report"]},{"url":"https://ubuntu.com/security/CVE-2021-45911","tags":["report"]}],"sources":{"cve":[{"id":"CVE-2021-45910","description":"An issue was discovered in gif2apng 1.9. There is a heap-based buffer overflow within the main function. It allows an attacker to write data outside of the allocated buffer. The attacker has control over a part of the address that data is written to, control over the written data, and (to some extent) control over the amount of data that is written.","status":"published","published":"2021-12-28T00:02:03Z","modified":"2024-08-04T04:54:31.054Z","updated_at":"2026-11-02T14:33:02.930115Z"}],"euvd":[{"id":"EUVD-2021-32625","description":"An issue was discovered in gif2apng 1.9. There is a heap-based buffer overflow within the main function. It allows an attacker to write data outside of the allocated buffer. The attacker has control over a part of the address that data is written to, control over the written data, and (to some extent) control over the amount of data that is written.","status":"published","published":"2021-12-28T00:02:03Z","modified":"2024-08-04T04:54:31Z","updated_at":"2026-11-03T03:08:25.222984Z"}],"ghsa":[{"id":"GHSA-jfjg-288w-6ffp","title":"An issue was discovered in gif2apng 1.9. There is a heap-based buffer overflow within the main...","description":"An issue was discovered in gif2apng 1.9. There is a heap-based buffer overflow within the main function. It allows an attacker to write data outside of the allocated buffer. The attacker has control over a part of the address that data is written to, control over the written data, and (to some extent) control over the amount of data that is written.","status":"published","published":"2021-12-29T00:00:46Z","modified":"2023-02-03T05:03:53Z","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"}],"cwes":["CWE-787"],"updated_at":"2026-11-02T14:53:26.852274Z"}],"nvd":[{"id":"CVE-2021-45910","description":"An issue was discovered in gif2apng 1.9. There is a heap-based buffer overflow within the main function. It allows an attacker to write data outside of the allocated buffer. The attacker has control over a part of the address that data is written to, control over the written data, and (to some extent) control over the amount of data that is written.","status":"published","published":"2021-12-28T01:15:07.56Z","modified":"2026-06-17T04:14:14.34Z","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-787"],"updated_at":"2026-11-02T14:07:02.977492Z"}],"osv":[{"id":"CVE-2021-45910","description":"An issue was discovered in gif2apng 1.9. There is a heap-based buffer overflow within the main function. It allows an attacker to write data outside of the allocated buffer. The attacker has control over a part of the address that data is written to, control over the written data, and (to some extent) control over the amount of data that is written.","status":"published","published":"2021-12-28T01:15:07.56Z","modified":"2026-03-14T11:17:24.475211Z","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":"2026-11-02T15:44:22.18434Z"},{"id":"DEBIAN-CVE-2021-45910","description":"An issue was discovered in gif2apng 1.9. There is a heap-based buffer overflow within the main function. It allows an attacker to write data outside of the allocated buffer. The attacker has control over a part of the address that data is written to, control over the written data, and (to some extent) control over the amount of data that is written.","status":"published","published":"2021-12-28T01:15:07.56Z","modified":"2026-08-27T23:04:43.245283618Z","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":"2026-11-02T15:45:35.799676Z"},{"id":"UBUNTU-CVE-2021-45910","description":"An issue was discovered in gif2apng 1.9. There is a heap-based buffer overflow within the main function. It allows an attacker to write data outside of the allocated buffer. The attacker has control over a part of the address that data is written to, control over the written data, and (to some extent) control over the amount of data that is written.","status":"published","published":"2021-12-28T01:15:00Z","modified":"2026-02-04T04:05:21.306366Z","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":"2026-11-02T15:54:30.277322Z"},{"id":"DLA-2937-1","title":"gif2apng - security update","status":"published","published":"2022-03-07T00:00:00Z","modified":"2026-03-09T01:23:34.835088Z","updated_at":"2026-11-02T15:46:11.189256Z"},{"id":"USN-5969-1","title":"gif2apng vulnerabilities","description":"It was discovered that gif2apng contained multiple heap-base overflows. An\nattacker could potentially exploit this to cause a denial of service (system\ncrash). (CVE-2021-45909, CVE-2021-45910, CVE-2021-45911)\n","status":"published","published":"2023-03-23T22:53:29Z","modified":"2026-06-25T13:31:54.493149864Z","updated_at":"2026-11-02T16:58:16.738762Z"}]}}