MEDIUM 6.4
PYSEC-2026-645
instack-undercloud vulnerable to symlink attack on tmp files
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.
Are you affected?
Enter the version of the package you're using.
Affected packages
PyPI / instack-undercloud
Introduced in:
0 No fixed version published yet for instack-undercloud (pip). Pin to a known-safe version or switch to an alternative.
References
- https://nvd.nist.gov/vuln/detail/CVE-2017-7549 [ADVISORY]
- https://access.redhat.com/errata/RHSA-2017:2557 [WEB]
- https://access.redhat.com/errata/RHSA-2017:2649 [WEB]
- https://access.redhat.com/errata/RHSA-2017:2687 [WEB]
- https://access.redhat.com/errata/RHSA-2017:2693 [WEB]
- https://access.redhat.com/errata/RHSA-2017:2726 [WEB]
- https://access.redhat.com/security/cve/CVE-2017-7549 [WEB]
- https://bugzilla.redhat.com/show_bug.cgi?id=1477403 [WEB]
- https://github.com/pypa/advisory-database/tree/main/vulns/instack/PYSEC-2017-152.yaml [WEB]
- https://opendev.org/openstack/instack-undercloud [WEB]
- https://web.archive.org/web/20170907040549/http://www.securityfocus.com/bid/100407 [WEB]
- http://www.securityfocus.com/bid/100407 [WEB]
- https://pypi.org/project/instack-undercloud [PACKAGE]
- https://github.com/advisories/GHSA-53wm-97p6-582f [ADVISORY]