instack-undercloud: uses hardcoded /tmp paths
Published Sep 21, 2017
6.4
MEDIUMCVSS 3.0
EPSS 0.35%
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.
Affected products
-
- Version Pike, 12: v7.2.0, Ocata, 11: v6.1.0, Newton, 10: v5.3.0StatusaffectedConstraints-
- Version
Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).
| Vendor | Product | Default status | Versions | ||||||
|---|---|---|---|---|---|---|---|---|---|
| Red Hat, Inc. | Instack-Undercloud | n/a |
|
Configuration 1
- 7.2.0
Configuration 2
- 6.1.0
Configuration 3
- 5.3.0
No data.
Red Hat Enterprise Linux OpenStack Platform director 7.0 for RHEL 7
instack-undercloud-0:2.1.2-41.el7ost
Fixed · RHSA-2017:2693
Red Hat OpenStack Platform 10.0 (Newton)
instack-undercloud-0:5.3.0-3.el7ost
Fixed · RHSA-2017:2649
Red Hat OpenStack Platform 11.0 (Ocata)
instack-undercloud-0:6.1.0-3.el7ost
Fixed · RHSA-2017:2726
Red Hat OpenStack Platform 8.0 (Liberty) director
instack-undercloud-0:2.2.7-10.el7ost
Fixed · RHSA-2017:2687
Red Hat OpenStack Platform 9.0 (Mitaka) director
instack-undercloud-0:4.0.0-17.el7ost
Fixed · RHSA-2017:2557
Red Hat Enterprise Linux OpenStack Platform 6 (Juno)
instack-undercloud
Will not fix
Red Hat Enterprise Linux OpenStack Platform 7 (Kilo)
instack-undercloud
Affected
Red Hat OpenStack Platform 12 (Pike)
instack-undercloud
Not affected
Red Hat OpenStack Platform 8 (Liberty)
instack-undercloud
Affected
Red Hat OpenStack Platform 9 (Mitaka)
instack-undercloud
Affected
| Product | Package | State | Advisory |
|---|---|---|---|
| Red Hat Enterprise Linux OpenStack Platform director 7.0 for RHEL 7 | instack-undercloud-0:2.1.2-41.el7ost | Fixed | RHSA-2017:2693 |
| Red Hat OpenStack Platform 10.0 (Newton) | instack-undercloud-0:5.3.0-3.el7ost | Fixed | RHSA-2017:2649 |
| Red Hat OpenStack Platform 11.0 (Ocata) | instack-undercloud-0:6.1.0-3.el7ost | Fixed | RHSA-2017:2726 |
| Red Hat OpenStack Platform 8.0 (Liberty) director | instack-undercloud-0:2.2.7-10.el7ost | Fixed | RHSA-2017:2687 |
| Red Hat OpenStack Platform 9.0 (Mitaka) director | instack-undercloud-0:4.0.0-17.el7ost | Fixed | RHSA-2017:2557 |
| Red Hat Enterprise Linux OpenStack Platform 6 (Juno) | instack-undercloud | Will not fix | n/a |
| Red Hat Enterprise Linux OpenStack Platform 7 (Kilo) | instack-undercloud | Affected | n/a |
| Red Hat OpenStack Platform 12 (Pike) | instack-undercloud | Not affected | n/a |
| Red Hat OpenStack Platform 8 (Liberty) | instack-undercloud | Affected | n/a |
| Red Hat OpenStack Platform 9 (Mitaka) | instack-undercloud | Affected | n/a |
No package ranges for this CVE.
Remediation
No remediation recorded yet.
Metrics
No CVSS v4.0 score for this CVE.
No CVSS v3.1 score for this CVE.
CVSS:3.0/AV:L/AC:H/PR:L/UI:N/S:C/C:H/I:L/A:N
1 other source (Red Hat) ▾
CVSS:3.0/AV:L/AC:H/PR:L/UI:R/S:C/C:H/I:L/A:N
AV:L/AC:M/Au:N/C:P/I:P/A:N
This CVE is not in the KEV list.
No CISA SSVC assessment for this CVE yet.
Estimated probability of exploitation in the wild in the next 30 days (FIRST EPSS). As of Oct 1, 2026.
Score over time
2021–2026- EPSS v1
- EPSS v5
- EPSS v2
- EPSS v3
Percentile over time
- EPSS v1
- EPSS v5
- EPSS v2
- EPSS v3
Table of values (8 key points)
Flat stretches are collapsed; showing up to 120 newest points.
| Date | Score | Percentile | Model |
|---|---|---|---|
| Oct 1, 2026 | 0.35% (0.00350) | 26.23th | v5 (v2026.06.15) |
| Sep 20, 2026 | 0.35% (0.00350) | 28.66th | v5 (v2026.06.15) |
| Jul 20, 2024 | 0.04% (0.00042) | 5.06th | v3 (v2023.03.01) |
| Mar 7, 2023 | 0.04% (0.00042) | 5.63th | v3 (v2023.03.01) |
| Mar 6, 2023 | 1.03% (0.01034) | 41.69th | v2 (v2022.01.01) |
| Feb 4, 2022 | 1.03% (0.01034) | 20.32th | v2 (v2022.01.01) |
| Feb 3, 2022 | 0.89% (0.00888) | 25.41th | v5 (v2026.06.15) |
| Apr 14, 2021 | 0.89% (0.00888) | 0.00th | v1 |
References (13)
- http://www.securityfocus.com/bid/100407 vdb-entryx_refsource_BIDThird Party AdvisoryVDB Entry
- https://access.redhat.com/errata/RHSA-2017:2557 vendor-advisoryx_refsource_REDHAT
- https://access.redhat.com/errata/RHSA-2017:2649 vendor-advisoryx_refsource_REDHAT
- https://access.redhat.com/errata/RHSA-2017:2687 vendor-advisoryx_refsource_REDHAT
- https://access.redhat.com/errata/RHSA-2017:2693 vendor-advisoryx_refsource_REDHAT
- https://access.redhat.com/errata/RHSA-2017:2726 vendor-advisoryx_refsource_REDHAT
- https://access.redhat.com/security/cve/CVE-2017-7549 Vendor Advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=1477403 x_refsource_CONFIRMIssue TrackingVendor Advisory
- https://github.com/advisories/GHSA-53wm-97p6-582f Advisory
- https://github.com/pypa/advisory-database/tree/main/vulns/instack/PYSEC-2017-152.yaml
- https://nvd.nist.gov/vuln/detail/CVE-2017-7549
- https://web.archive.org/web/20170907040549/http://www.securityfocus.com/bid/100407
- https://www.cve.org/CVERecord?id=CVE-2017-7549
Change history (0)
No recorded changes yet.