{"id":"UBUNTU-CVE-2019-20024","details":"A heap-based buffer overflow was discovered in image_buffer_resize in fromsixel.c in libsixel before 1.8.4.","modified":"2025-10-24T04:48:07Z","published":"2019-12-27T02:15:00Z","upstream":["CVE-2019-20024"],"references":[{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2019-20024"},{"type":"REPORT","url":"https://github.com/saitoha/libsixel/issues/121"},{"type":"REPORT","url":"https://github.com/saitoha/libsixel/commit/6367d2fc8c365c5841d05697200e90c73c4b3c4b"},{"type":"REPORT","url":"https://www.cve.org/CVERecord?id=CVE-2019-20024"}],"affected":[{"package":{"name":"libsixel","ecosystem":"Ubuntu:16.04:LTS","purl":"pkg:deb/ubuntu/libsixel@1.5.2-2?arch=source&distro=xenial"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["1.4.2-1","1.5.2-2"],"ecosystem_specific":{"binaries":[{"binary_version":"1.5.2-2","binary_name":"libsixel-bin"},{"binary_version":"1.5.2-2","binary_name":"libsixel-dev"},{"binary_version":"1.5.2-2","binary_name":"libsixel1"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2019/UBUNTU-CVE-2019-20024.json"}},{"package":{"name":"libsixel","ecosystem":"Ubuntu:18.04:LTS","purl":"pkg:deb/ubuntu/libsixel@1.7.3-1?arch=source&distro=bionic"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["1.5.2-2","1.7.3-1"],"ecosystem_specific":{"binaries":[{"binary_version":"1.7.3-1","binary_name":"libsixel-bin"},{"binary_version":"1.7.3-1","binary_name":"libsixel-dev"},{"binary_version":"1.7.3-1","binary_name":"libsixel-examples"},{"binary_version":"1.7.3-1","binary_name":"libsixel1"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2019/UBUNTU-CVE-2019-20024.json"}},{"package":{"name":"libsixel","ecosystem":"Ubuntu:20.04:LTS","purl":"pkg:deb/ubuntu/libsixel@1.8.2-2.1?arch=source&distro=focal"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["1.8.2-1","1.8.2-2.1"],"ecosystem_specific":{"binaries":[{"binary_version":"1.8.2-2.1","binary_name":"libsixel-bin"},{"binary_version":"1.8.2-2.1","binary_name":"libsixel-dev"},{"binary_version":"1.8.2-2.1","binary_name":"libsixel-examples"},{"binary_version":"1.8.2-2.1","binary_name":"libsixel1"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2019/UBUNTU-CVE-2019-20024.json"}}],"schema_version":"1.7.3","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H"},{"type":"Ubuntu","score":"medium"}]}