Is CVE-2020-12691 in the CISA KEV catalog?

No. CVE-2020-12691 is not currently on the CISA Known Exploited Vulnerabilities list.

What is the CVSS severity of CVE-2020-12691?

CVE-2020-12691 has a CVSS v3 base score of 8.8 (HIGH).

What is the EPSS score for CVE-2020-12691?

CVE-2020-12691 has an EPSS score of 4.92% (91th percentile), estimating the probability of exploitation in the next 30 days.

How do I fix CVE-2020-12691?

Upgrade keystone on debian 11 to 2:17.0.0~rc2-1 or later. Fixes are available for 3 affected products.

CVE & CISA-KEV Catalog

CVE-2020-12691

HIGHEPSS 91th pctl

8.8

CVSS v3

NVD

Description

An issue was discovered in OpenStack Keystone before 15.0.1, and 16.0.0. Any authenticated user can create an EC2 credential for themselves for a project that they have a specified role on, and then perform an update to the credential user and project, allowing them to masquerade as another user. This potentially allows a malicious user to act as the admin on a project another user has the admin role on, which can effectively grant that user global admin privileges.

CWE-863Incorrect Authorization

How to fix

Remediation Available

keystoneDebian

Fixed in:2:17.0.0~rc2-1CVE-2020-12691

keystoneUbuntu

Fixed in:2:13.0.4-0ubuntu1USN-4480-1

python-keystoneUbuntu

Fixed in:2:13.0.4-0ubuntu1USN-4480-1

Remediation is compiled from vendor and distribution security advisories. Always confirm against the linked source for your exact version and platform.

CVSS v3 Vector

Exploitability

Attack VectorNetwork

Attack ComplexityLow

Privileges RequiredLow

User InteractionNone

ScopeUnchanged

Impact

ConfidentialityHigh

IntegrityHigh

AvailabilityHigh

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

Exploit Intelligence

4.92%probability of exploitation in 30 days

91stpercentile

High risk: more likely to be exploited than 91% of all known CVEs.

References

Patch1

bugs.launchpad.net

Vendor Advisory1

security.openstack.org

Third-Party Advisory3

Other references2

Related Vulnerabilities

Other CWE-863 (Incorrect Authorization) vulnerabilities, ordered by exploit likelihood. View all

CVE	Severity	CVSS	EPSS	Exploited	Fix
CVE-2023-22518	Critical	9.8	100%	KEV + Ransom	Fix
CVE-2023-38035	Critical	9.8	100%	KEV + Ransom	-
CVE-2022-46169	Critical	9.8	100%	KEV	Fix
CVE-2025-29927	Critical	9.1	100%	-	Fix
CVE-2024-38856	Critical	9.8	99%	KEV	Fix
CVE-2020-36289	Medium	5.3	99%	-	Fix

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This product uses NVD data but is not endorsed or certified by the NVD. EPSS scores courtesy of FIRST.org (https://www.first.org/epss). Source: CISA KEV Catalog. Data as of 2024-11-21.