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UAA privilege escalation across identity zones

High severity GitHub Reviewed Published May 13, 2022 to the GitHub Advisory Database • Updated Mar 1, 2024

Package

maven org.cloudfoundry.identity:cloudfoundry-identity-server (Maven)

Affected versions

>= 4.12.0, < 4.12.2
>= 4.13.0, < 4.13.4

Patched versions

4.12.2
4.13.4

Description

Cloud Foundry Foundation UAA, versions 4.12.X and 4.13.X, introduced a feature which could allow privilege escalation across identity zones for clients performing offline validation. A zone administrator could configure their zone to issue tokens which impersonate another zone, granting up to admin privileges in the impersonated zone for clients performing offline token validation.

References

Published by the National Vulnerability Database May 15, 2018
Published to the GitHub Advisory Database May 13, 2022
Reviewed Mar 1, 2024
Last updated Mar 1, 2024

Severity

High

CVSS overall score

This score calculates overall vulnerability severity from 0 to 10 and is based on the Common Vulnerability Scoring System (CVSS).
/ 10

CVSS v3 base metrics

Attack vector
Network
Attack complexity
Low
Privileges required
High
User interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
High

CVSS v3 base metrics

Attack vector: More severe the more the remote (logically and physically) an attacker can be in order to exploit the vulnerability.
Attack complexity: More severe for the least complex attacks.
Privileges required: More severe if no privileges are required.
User interaction: More severe when no user interaction is required.
Scope: More severe when a scope change occurs, e.g. one vulnerable component impacts resources in components beyond its security scope.
Confidentiality: More severe when loss of data confidentiality is highest, measuring the level of data access available to an unauthorized user.
Integrity: More severe when loss of data integrity is the highest, measuring the consequence of data modification possible by an unauthorized user.
Availability: More severe when the loss of impacted component availability is highest.
CVSS:3.0/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H

EPSS score

Exploit Prediction Scoring System (EPSS)

This score estimates the probability of this vulnerability being exploited within the next 30 days. Data provided by FIRST.
(60th percentile)

Weaknesses

No CWEs

CVE ID

CVE-2018-1262

GHSA ID

GHSA-8v97-gv3g-32rf

Source code

Credits

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