CVE-2017-7549

medium

Published 2022-05-13 · Modified 2026-05-21

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CVSS v3

6.4

CVSS:3.0/AV:L/AC:H/PR:L/UI:N/S:C/C:H/I:L/A:N

CVSS v4 NEW

—

not yet in upstream

VIR risk

6.4

Description

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.

Predictions

Exploit likelihood

64%

Patch ETA

—

Heuristic predictions, AS-IS, for prioritization only.

Mitigations

No mitigations published for this CVE yet.

The vendor-content worker queues fetches as references arrive (check back in a few minutes). Or — if you've already worked around this in production — publish your fix to the community-verified tier.

✚ Propose a mitigation on Community → Mitigations published via the community go through AI scoring + 2 human reviewers + 7-day silent objection window before landing here with source_tier=community-verified.

Package impact

Ecosystem	Package	Vulnerable	Fixed
PyPI	instack-undercloud	`<=7.2.0`
PyPI	instack	`<=5.3.0`

Application impact

Vendor	Product	Versions
openstack	instack-undercloud	`7.2.0`
redhat	openstack	`12`
openstack	instack-undercloud	`6.1.0`
redhat	openstack	`11`
openstack	instack-undercloud	`5.3.0`
redhat	openstack	`10`

References

CWEs

CWE-377 CWE-59

Community-verified mitigations for this CVE will appear above when contributors publish them.

Verify integrity in audit chain (admin only). AS-IS.