{"id":"UBUNTU-CVE-2020-15900","details":"A memory corruption issue was found in Artifex Ghostscript 9.50 and 9.52. Use of a non-standard PostScript operator can allow overriding of file access controls. The 'rsearch' calculation for the 'post' size resulted in a size that was too large, and could underflow to max uint32_t. This was fixed in commit 5d499272b95a6b890a1397e11d20937de000d31b.","modified":"2026-04-22T14:08:28.681670Z","published":"2020-07-28T16:15:00Z","related":["USN-4445-1"],"upstream":["CVE-2020-15900"],"references":[{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2020-15900"},{"type":"REPORT","url":"https://artifex.com/security-advisories/CVE-2020-15900"},{"type":"ADVISORY","url":"https://ubuntu.com/security/notices/USN-4445-1"},{"type":"REPORT","url":"https://www.cve.org/CVERecord?id=CVE-2020-15900"}],"affected":[{"package":{"name":"ghostscript","ecosystem":"Ubuntu:20.04:LTS","purl":"pkg:deb/ubuntu/ghostscript@9.50~dfsg-5ubuntu4.1?arch=source&distro=focal"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"9.50~dfsg-5ubuntu4.1"}]}],"versions":["9.27~dfsg+0-0ubuntu3","9.27~dfsg+0-0ubuntu4","9.50~dfsg-5ubuntu1","9.50~dfsg-5ubuntu2","9.50~dfsg-5ubuntu3","9.50~dfsg-5ubuntu4"],"ecosystem_specific":{"availability":"No subscription required","binaries":[{"binary_version":"9.50~dfsg-5ubuntu4.1","binary_name":"ghostscript"},{"binary_name":"ghostscript-x","binary_version":"9.50~dfsg-5ubuntu4.1"},{"binary_name":"libgs9","binary_version":"9.50~dfsg-5ubuntu4.1"},{"binary_name":"libgs9-common","binary_version":"9.50~dfsg-5ubuntu4.1"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2020/UBUNTU-CVE-2020-15900.json"}}],"schema_version":"1.7.5","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H"},{"type":"Ubuntu","score":"medium"}]}