What’s Vulnerable › Vulnerabilities

CVE-2017-7549

• Severity: medium (CVSS 6.4 v3.0)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.4% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2017-09-21 · updated 2026-06-17
• Weakness: CWE-377

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

• Red Hat, Inc. instack-undercloud: 7.2.0, 6.1.0, 5.3.0

References

• http://www.securityfocus.com/bid/100407
• https://access.redhat.com/errata/RHSA-2017:2557
• https://access.redhat.com/errata/RHSA-2017:2649
• https://access.redhat.com/errata/RHSA-2017:2687
• https://access.redhat.com/errata/RHSA-2017:2693
• https://access.redhat.com/errata/RHSA-2017:2726
• https://bugzilla.redhat.com/show_bug.cgi?id=1477403
• http://www.securityfocus.com/bid/100407
• https://access.redhat.com/errata/RHSA-2017:2557
• https://access.redhat.com/errata/RHSA-2017:2649
• https://access.redhat.com/errata/RHSA-2017:2687
• https://access.redhat.com/errata/RHSA-2017:2693

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