Insecure Temporary File Affecting instack-undercloud package, versions <0:4.0.0-17.el7ost
Threat Intelligence
The probability is the direct output of the EPSS model, and conveys an overall sense of the threat of exploitation in the wild. The percentile measures the EPSS probability relative to all known EPSS scores. Note: This data is updated daily, relying on the latest available EPSS model version. Check out the EPSS documentation for more details.
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Start learning- Snyk IDSNYK-RHEL7-INSTACKUNDERCLOUD-5096118
- published27 Mar 2023
- disclosed14 Aug 2017
Introduced: 14 Aug 2017
CVE-2017-7549 (opens in a new tab)How to fix?
Upgrade RHEL:7 instack-undercloud to version 0:4.0.0-17.el7ost or higher.
This issue was patched in RHSA-2017:2557.
NVD Description
Note: Versions mentioned in the description apply only to the upstream instack-undercloud package and not the instack-undercloud package as distributed by RHEL.
See How to fix? for RHEL:7 relevant fixed versions and status.
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.