Vulnerability in OpenStack Instack-Undercloud
CVE-2017-7549
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.
Published · last modified .
CVSS v3 metric
CVSS v3 base score 6.4 (Medium). Vector: CVSS:3.0/AV:L/AC:H/PR:L/UI:N/S:C/C:H/I:L/A:N.
EPSS exploit prediction
EPSS: 0.004 (26.1th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 26th percentile — 26.1% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.004 · newest: 0.004 · change: 0.000
Affected products
- OpenStack Instack-Undercloud — versions 7.2.0, 6.1.0, 5.3.0
- Red Hat, Inc. Instack-Undercloud — versions Pike, 12: v7.2.0, Ocata, 11: v6.1.0, Newton, 10: v5.3.0
- Red Hat OpenStack — versions 12, 11, 10
Weakness classification (CWE)
References
- access.redhat.com/errata/RHSA-2017:2726 (vendor-advisory)
- www.securityfocus.com/bid/100407 (VDB Entry, Third Party Advisory, vdb-entry)
- access.redhat.com/errata/RHSA-2017:2649 (vendor-advisory)
- access.redhat.com/errata/RHSA-2017:2687 (vendor-advisory)
- access.redhat.com/errata/RHSA-2017:2557 (vendor-advisory)
- access.redhat.com/errata/RHSA-2017:2693 (vendor-advisory)
- bugzilla.redhat.com/show_bug.cgi (Issue Tracking, Vendor Advisory)
Frequently asked questions
- What is CVE-2017-7549?
- CVE-2017-7549 is a medium-severity vulnerability in OpenStack Instack-Undercloud, classified under Insecure Temporary File. CVSS score: 6.4/10. Published 2017-09-21.
- How severe is CVE-2017-7549?
- Medium severity. CVSS v3 base score is 6.4 out of 10.