CVE-2021-38155

Public Exploit

Description

OpenStack Keystone 10.x through 16.x before 16.0.2, 17.x before 17.0.1, 18.x before 18.0.1, and 19.x before 19.0.1 allows information disclosure during account locking (related to PCI DSS features). By guessing the name of an account and failing to authenticate multiple times, any unauthenticated actor could both confirm the account exists and obtain that account's corresponding UUID, which might be leveraged for other unrelated attacks. All deployments enabling security_compliance.lockout_failure_attempts are affected.

Category

7.5
CVSS
Severity: High
CVSS 3.1 •
CVSS 2.0 •
EPSS 0.79% Top 30%
Vendor Advisory openstack.org
Affected: n/a n/a
Published at:
Updated at:

References

Link Tags
https://launchpad.net/bugs/1688137 issue tracking patch exploit third party advisory
https://security.openstack.org/ossa/OSSA-2021-003.html patch vendor advisory
http://www.openwall.com/lists/oss-security/2021/08/10/5 mailing list third party advisory patch
https://lists.debian.org/debian-lts-announce/2024/01/msg00007.html mailing list

Frequently Asked Questions

What is the severity of CVE-2021-38155?
CVE-2021-38155 has been scored as a high severity vulnerability.
How to fix CVE-2021-38155?
To fix CVE-2021-38155, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2021-38155 being actively exploited in the wild?
It is possible that CVE-2021-38155 is being exploited or will be exploited in a near future based on public information. According to its EPSS score, there is a ~1% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
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