Description
The V3 API in OpenStack Identity (Keystone) 2013.1 before 2013.2.4 and icehouse before icehouse-rc2 allows remote attackers to cause a denial of service (CPU consumption) via a large number of the same authentication method in a request, aka "authentication chaining."
Fixed in Linux distributions
Distributions backport fixes, so the version that fixes this vulnerability differs per release — upgrade to at least the version shown. From the distributions' security trackers and advisories.
Debian
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Debian 14 | keystone | 2014.1-1 | — |
| Debian 13 | keystone | 2014.1-1 | — |
| Debian 12 | keystone | 2014.1-1 | — |
Red Hat
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Red Hat OpenStack 4 | python-keystone +2 | 2013.2.4-1.el6ost | RHSA-2014:1688 |
Affected packages
| Ecosystem | Package | Affected | Fixed | Record |
|---|---|---|---|---|
| PyPI | keystone | < 8.0.0a0 | 8.0.0a0 | GHSA-6mv3-p2gr-wgqf |
Advisories 1
- RHSA-2014:1688 Red Hat Security Advisory: openstack-keystone security and bug fix update Red Hat Security Advisories (RHSA) · Aug 1, 2026