Auth bypass in Cloud Foundry Uaa
CVE-2018-11047
Cloud Foundry UAA, versions 4.19 prior to 4.19.2 and 4.12 prior to 4.12.4 and 4.10 prior to 4.10.2 and 4.7 prior to 4.7.6 and 4.5 prior to 4.5.7, incorrectly authorizes requests to admin endpoints by accepting a valid refresh token in lieu of an access token. Refresh tokens by design have a longer expiration time than access tokens, allowing the possessor of a refresh token to authenticate longer than expected. This affects the administrative endpoints of the UAA. i.e. /Users, /Groups, etc. However, if the user has been deleted or had groups removed, or the client was deleted, the refresh token will no longer be valid.
Vulnerability class: Broken Access Control
EPSS: 0.011 (62.5th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 7.5 (High). Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N.
Affected products
- Cloud Foundry Uaa — versions 4.7, 4.19, 4.5
- Pivotal_software Cloud_foundry_uaa
Weakness classification (CWE)
References
- security_alert@emc.com (x_refsource_CONFIRM, Mitigation, Vendor Advisory)
Frequently asked questions
- What is CVE-2018-11047?
- CVE-2018-11047 is a high-severity vulnerability in Cloud Foundry Uaa, classified under Incorrect Authorization. CVSS score: 7.5/10. Published 2018-07-24.
- How severe is CVE-2018-11047?
- High severity. CVSS v3 base score is 7.5 out of 10.