{"id":"PYSEC-2017-152","details":"A flaw was found in instack-undercloud 7.2.0 as packaged in Red Hat OpenStack Platform Pike, 6.1.0 as packaged in Red Hat OpenStack Platform Oacta, 5.3.0 as packaged in Red Hat OpenStack Newton, where pre-install and security policy scripts used insecure temporary files. A local user could exploit this flaw to conduct a symbolic-link attack, allowing them to overwrite the contents of arbitrary files.","aliases":["CVE-2017-7549","GHSA-53wm-97p6-582f"],"modified":"2026-05-21T15:00:14.181231588Z","published":"2017-09-21T21:29:00.447Z","references":[{"type":"ADVISORY","url":"http://www.securityfocus.com/bid/100407"},{"type":"ADVISORY","url":"https://access.redhat.com/errata/RHSA-2017:2557"},{"type":"ADVISORY","url":"https://access.redhat.com/errata/RHSA-2017:2649"},{"type":"ADVISORY","url":"https://access.redhat.com/errata/RHSA-2017:2687"},{"type":"ADVISORY","url":"https://access.redhat.com/errata/RHSA-2017:2693"},{"type":"ADVISORY","url":"https://access.redhat.com/errata/RHSA-2017:2726"},{"type":"REPORT","url":"https://bugzilla.redhat.com/show_bug.cgi?id=1477403"}],"affected":[{"package":{"name":"instack","ecosystem":"PyPI","purl":"pkg:pypi/instack"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"last_affected":"7.2.0"},{"last_affected":"6.1.0"},{"last_affected":"5.3.0"}]}],"versions":["0.0.9.dev4","5.0.0","5.0.0.0b1","5.0.0.0b2","5.1.0","6.1.0"],"ecosystem_specific":{},"database_specific":{"source":"https://github.com/pypa/advisory-database/blob/main/vulns/instack/PYSEC-2017-152.yaml"}}],"schema_version":"1.7.5","severity":[{"type":"CVSS_V3","score":"CVSS:3.0/AV:L/AC:H/PR:L/UI:N/S:C/C:H/I:L/A:N"}]}