Vulnerability CVE-2017-7549
Published: 2017-09-21   Modified: 2017-09-22

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.

Type:

CWE-59

 (Improper Link Resolution Before File Access ('Link Following'))

CVSS2 => (AV:L/AC:M/Au:N/C:P/I:P/A:N)

CVSS Base Score
Impact Subscore
Exploitability Subscore
3.3/10
4.9/10
3.4/10
Exploit range
Attack complexity
Authentication
Local
Medium
No required
Confidentiality impact
Integrity impact
Availability impact
Partial
Partial
None
Affected software
Openstack -> Instack-undercloud 

 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
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