{"id":"UBUNTU-CVE-2020-27788","details":"An out-of-bounds read access vulnerability was discovered in UPX in PackLinuxElf64::canPack() function of p_lx_elf.cpp file. An attacker with a crafted input file could trigger this issue that could cause a crash leading to a denial of service.","modified":"2025-10-24T04:48:52Z","published":"2022-08-18T20:15:00Z","upstream":["CVE-2020-27788"],"references":[{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2020-27788"},{"type":"REPORT","url":"https://github.com/upx/upx/issues/332"},{"type":"REPORT","url":"https://github.com/upx/upx/commit/1bb93d4fce9f1d764ba57bf5ac154af515b3fc83"},{"type":"REPORT","url":"https://www.cve.org/CVERecord?id=CVE-2020-27788"}],"affected":[{"package":{"name":"upx-ucl","ecosystem":"Ubuntu:16.04:LTS","purl":"pkg:deb/ubuntu/upx-ucl@3.91-1?arch=source&distro=xenial"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["3.91-1"],"ecosystem_specific":{"binaries":[{"binary_name":"upx-ucl","binary_version":"3.91-1"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2020/UBUNTU-CVE-2020-27788.json"}},{"package":{"name":"upx-ucl","ecosystem":"Ubuntu:18.04:LTS","purl":"pkg:deb/ubuntu/upx-ucl@3.94-4?arch=source&distro=bionic"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["3.94-2","3.94-3","3.94-4"],"ecosystem_specific":{"binaries":[{"binary_name":"upx-ucl","binary_version":"3.94-4"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2020/UBUNTU-CVE-2020-27788.json"}},{"package":{"name":"upx-ucl","ecosystem":"Ubuntu:20.04:LTS","purl":"pkg:deb/ubuntu/upx-ucl@3.95-2build1?arch=source&distro=focal"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["3.95-2","3.95-2build1"],"ecosystem_specific":{"binaries":[{"binary_name":"upx-ucl","binary_version":"3.95-2build1"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2020/UBUNTU-CVE-2020-27788.json"}}],"schema_version":"1.7.3","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H"},{"type":"Ubuntu","score":"low"}]}