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CVE-2012-5571

21
FAUCET Score

CVE-2012-5571 describes an authorization bypass vulnerability in OpenStack Keystone Essex and Folsom versions. Authenticated attackers could leverage EC2 tokens associated with a user role that has been removed from a tenant, thereby bypassing intended access restrictions. This vulnerability has a CVSS score of 3.5 (medium severity), indicating a network-based attack with medium complexity, requiring authentication, and potentially leading to partial integrity impact. There is no evidence of active exploitation, publicly available exploit code, or significant community discussion surrounding this CVE.

Impacted Technologies

VendorProductVersion(s)CPE
2012.1CPE matchmatch criteria
cpe:2.3:a:openstack:essex:2012.1:*:*:*:*:*:*:*
2012.2CPE matchmatch criteria
cpe:2.3:a:openstack:folsom:2012.2:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

5.4MEDIUM

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
LOW
Integrity Impact
LOW
Availability Impact
NONE
Exploitability Score
2.8
Impact Score
2.5
CvssVersion
3.1

Exploit Intelligence

EPSS Score
2.04%
Probability of exploitation in next 30 days
EPSS Percentile
79.1%
Percentile rank of EPSS score among Peer Group
As of 2026-07-24
Model: v2026.06.15
This CVE's current EPSS score of 0.0204 is in the 91st percentile among its peer group of 21,924 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.1 Bluesky, 0.0 Mastodon, and 0.1 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)

github_advisorypatch availablevia nvd_reference
View patch
pippatch availablevia ghsa
Product: KeystoneFixed in: 8.0.0a0

Vendor Advisories (1)

pipGHSA-qvpr-qm6w-6rcclow

OpenStack Keystone intended authorization restrictions bypass

May 17, 2022

References

lists.fedoraproject.org / pipermail/package-announce/2012-December/094286.html
rhn.redhat.com / errata/RHSA-2012-1556.html
rhn.redhat.com / errata/RHSA-2012-1557.html
access.redhat.com / security/cve/CVE-2012-5571
bugs.launchpad.net / keystone/+bug/1064914
Patch
secunia.com / advisories/51423
Vendor Advisory
secunia.com / advisories/51436
Vendor Advisory
exchange.xforce.ibmcloud.com / vulnerabilities/80333
github.com / openstack/keystone/commit/37308dd4f3e33f7bd0f71d83fd51734d1870713b
Patch
github.com / openstack/keystone/commit/8735009dc5b895db265a1cd573f39f4acfca2a19
Patch
github.com / openstack/keystone/commit/9d68b40cb9ea818c48152e6c712ff41586ad9653
Patch
openwall.com / lists/oss-security/2012/11/28/5
Patch
openwall.com / lists/oss-security/2012/11/28/6
Patch
securityfocus.com / bid/56726
ubuntu.com / usn/USN-1641-1