affected:
- ecosystem_specific: {}
  package:
    ecosystem: PyPI
    name: instack
    purl: pkg:pypi/instack
  ranges:
  - events:
    - introduced: '0'
    - last_affected: 7.2.0
    - last_affected: 6.1.0
    - last_affected: 5.3.0
    type: ECOSYSTEM
  versions:
  - 0.0.9.dev4
  - 5.0.0
  - 5.0.0.0b1
  - 5.0.0.0b2
  - 5.1.0
aliases:
- CVE-2017-7549
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.
id: PYSEC-2017-152
modified: '2026-05-21T14:54:30.554896Z'
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
severity:
- score: CVSS:3.0/AV:L/AC:H/PR:L/UI:N/S:C/C:H/I:L/A:N
  type: CVSS_V3