{"id":"UBUNTU-CVE-2020-16127","details":"An Ubuntu-specific modification to AccountsService in versions before 0.6.55-0ubuntu13.2, among other earlier versions, would perform unbounded read operations on user-controlled ~/.pam_environment files, allowing an infinite loop if /dev/zero is symlinked to this location.","modified":"2026-04-22T12:31:36.665060Z","published":"2020-11-03T00:00:00Z","related":["USN-4616-1"],"upstream":["CVE-2020-16127"],"references":[{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2020-16127"},{"type":"ADVISORY","url":"https://ubuntu.com/security/notices/USN-4616-1"},{"type":"REPORT","url":"https://www.cve.org/CVERecord?id=CVE-2020-16127"}],"affected":[{"package":{"name":"accountsservice","ecosystem":"Ubuntu:20.04:LTS","purl":"pkg:deb/ubuntu/accountsservice@0.6.55-0ubuntu12~20.04.4?arch=source&distro=focal"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"0.6.55-0ubuntu12~20.04.4"}]}],"versions":["0.6.55-0ubuntu10","0.6.55-0ubuntu11","0.6.55-0ubuntu12~20.04.1","0.6.55-0ubuntu12~20.04.2"],"ecosystem_specific":{"availability":"No subscription required","binaries":[{"binary_name":"accountsservice","binary_version":"0.6.55-0ubuntu12~20.04.4"},{"binary_name":"gir1.2-accountsservice-1.0","binary_version":"0.6.55-0ubuntu12~20.04.4"},{"binary_name":"libaccountsservice0","binary_version":"0.6.55-0ubuntu12~20.04.4"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2020/UBUNTU-CVE-2020-16127.json"}}],"schema_version":"1.7.5","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H"},{"type":"CVSS_V3","score":"CVSS:3.1/AV:L/AC:L/PR:L/UI:R/S:U/C:N/I:N/A:L"},{"type":"Ubuntu","score":"medium"}]}