Vulnerability Details : CVE-2015-7546
The identity service in OpenStack Identity (Keystone) before 2015.1.3 (Kilo) and 8.0.x before 8.0.2 (Liberty) and keystonemiddleware (formerly python-keystoneclient) before 1.5.4 (Kilo) and Liberty before 2.3.3 does not properly invalidate authorization tokens when using the PKI or PKIZ token providers, which allows remote authenticated users to bypass intended access restrictions and gain access to cloud resources by manipulating byte fields within a revoked token.
Products affected by CVE-2015-7546
- cpe:2.3:o:oracle:solaris:11.3:*:*:*:*:*:*:*
- cpe:2.3:a:openstack:keystone:*:*:*:*:*:*:*:*
- cpe:2.3:a:openstack:keystone:*:*:*:*:*:*:*:*
- cpe:2.3:a:openstack:keystonemiddleware:*:*:*:*:*:*:*:*
- cpe:2.3:a:openstack:keystonemiddleware:*:*:*:*:*:*:*:*
Exploit prediction scoring system (EPSS) score for CVE-2015-7546
0.85%
Probability of exploitation activity in the next 30 days
EPSS Score History
~ 73 %
Percentile, the proportion of vulnerabilities that are scored at or less
CVSS scores for CVE-2015-7546
Base Score | Base Severity | CVSS Vector | Exploitability Score | Impact Score | Score Source | First Seen |
---|---|---|---|---|---|---|
6.0
|
MEDIUM | AV:N/AC:M/Au:S/C:P/I:P/A:P |
6.8
|
6.4
|
NIST | |
7.5
|
HIGH | CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H |
1.6
|
5.9
|
NIST |
CWE ids for CVE-2015-7546
-
The product transmits or stores authentication credentials, but it uses an insecure method that is susceptible to unauthorized interception and/or retrieval.Assigned by: nvd@nist.gov (Primary)
References for CVE-2015-7546
-
http://www.securityfocus.com/bid/80498
OpenStack Keystone PKI Token Revocation CVE-2015-7546 Security Bypass VulnerabilityThird Party Advisory;VDB Entry
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https://wiki.openstack.org/wiki/OSSN/OSSN-0062
OSSN/OSSN-0062 - OpenStackVendor Advisory
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http://www.oracle.com/technetwork/topics/security/bulletinapr2016-2952098.html
Oracle Solaris Bulletin - April 2016Third Party Advisory
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https://bugs.launchpad.net/keystone/+bug/1490804
Bug #1490804 “[OSSA 2016-005] PKI Token Revocation Bypass (CVE-2...” : Bugs : OpenStack Identity (keystone)Issue Tracking;Third Party Advisory
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https://security.openstack.org/ossa/OSSA-2016-005.html
OpenStack Docs: OSSA-2016-005: Potential reuse of revoked Identity tokensPatch;Vendor Advisory
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