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CVE-2013-6391

17
FAUCET Score

CVE-2013-6391 describes a privilege escalation vulnerability in OpenStack Identity (Keystone) versions before Havana 2013.2.1 and Icehouse before icehouse-2. The ec2tokens API fails to return a trust-scoped token, allowing remote trust users to generate EC2 credentials from a trust-scoped token and use them to gain elevated privileges. This vulnerability has a CVSS score of 5.8, indicating a medium severity with network access, medium attack complexity, and potential for partial confidentiality and integrity impact. There is no evidence of active exploitation, publicly available exploit code (Metasploit, Nuclei, ExploitDB), or significant community discussion or media coverage.

Impacted Technologies

VendorProductVersion(s)CPE
>= 2013.2, < 2013.2.1CPE matchmatch criteria
cpe:2.3:a:openstack:keystone:*:*:*:*:*:*:*:*
13.10CPE matchmatch criteria
cpe:2.3:o:canonical:ubuntu_linux:13.10:*:*:*:*:*:*:*
4.0CPE matchmatch criteria
cpe:2.3:a:redhat:openstack:4.0:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 2.0

5.8MEDIUM

AV:N/AC:M/Au:N/C:P/I:P/A:N

Confidentiality Impact
PARTIAL
Integrity Impact
PARTIAL
Availability Impact
NONE
Access Vector
NETWORK
Access Complexity
MEDIUM
Authentication
NONE
Exploitability Score
8.6
Impact Score
4.9
CvssVersion
2.0

Exploit Intelligence

EPSS Score
2.24%
Probability of exploitation in next 30 days
EPSS Percentile
81.0%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0224 is in the 69th percentile among its peer group of 19,958 CVEs.

Social Chatter

No social media mentions found for this CVE.

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.0 Bluesky, 0.0 Mastodon, and 0.2 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.0 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Patch Available

Vendor Patches (2)

redhatpatch availablevia redhat_api
Product: OpenStack 3 for RHEL 6Fixed in: openstack-keystone-0:2013.1.5-2.el6ost
View patch
redhatpatch availablevia redhat_api
Product: OpenStack 4 for RHEL 6Fixed in: openstack-keystone-0:2013.2.1-1.el6ost
View patch

Vendor Advisories (1)

redhatCVE-2013-6391Moderate

Keystone: trust circumvention through EC2-style tokens

Dec 11, 2013

References

rhn.redhat.com / errata/RHSA-2014-0089.html
Third Party Advisory
bugs.launchpad.net / keystone/+bug/1242597
ExploitIssue TrackingThird Party Advisory
secunia.com / advisories/56079
Third Party Advisory
secunia.com / advisories/56154
Third Party Advisory
exchange.xforce.ibmcloud.com / vulnerabilities/89657
Third Party AdvisoryVDB Entry
openwall.com / lists/oss-security/2013/12/11/7
Mailing ListThird Party Advisory
securityfocus.com / bid/64253
Third Party AdvisoryVDB Entry
ubuntu.com / usn/USN-2061-1
Third Party Advisory