An issue was discovered in OpenStack Keystone before 29.0.2.
- Published
- Last modified
- Where the record stands: published, rejected by its publisher, or superseded by another id.What do these mean? →
- published
- Whether CISA lists it in its Known Exploited Vulnerabilities catalog: proof that attackers are using it.What do these mean? →
- Not listed in CISA KEV
- Fix
- Fixed in 27.0.2, 28.0.2, 29.0.2
- Whether working attack code is public (Exploit-DB, Metasploit, Nuclei or GitHub). Public code makes attacks easier.What do these mean? →
- None on Exploit-DB, Metasploit or GitHub
- Exploitation: none
- Automatable: no
- Technical impact: partial
Summary
An issue was discovered in OpenStack Keystone before 29.0.2. When combined with an application credential impersonation vulnerability, an attacker with the member role on a project can escalate to admin by chaining unrestricted application credentials with Keystone trusts. The impersonated token carries the victim's identity, which passes the trustor validation check. Keystone then validates the delegated roles against the victim's actual role assignments in the database, not the roles on the requesting token. This allows the attacker to create a trust delegating the victim's admin role to themselves. The trust persists independently, and additional trusts and application credentials can be created to maintain access. All actions are logged under the victim's identity.
Timeline
- CVE published
- CISA SSVC assessment
Exploitation: none · Automatable: no · Technical impact: partial
- Record last updated
Affected versions
- OpenStack Keystone
From 14.0.0 · fixed in 27.0.2; From 28.0.0 · fixed in 28.0.2; From 29.0.0 · fixed in 29.0.2
- keystonePyPI
From 14.0.0 · fixed in 27.0.2
- keystonePyPI
From 28.0.0 · fixed in 28.0.2
- keystonePyPI
From 29.0.0 · fixed in 29.0.2
- keystonePyPI
From 14.0.0 · fixed in 27.0.2; From 28.0.0 · fixed in 28.0.2; From 29.0.0 · fixed in 29.0.2