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
Published · last modified .
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.
EPSS exploit prediction
EPSS: 0.011 (64.5th percentile), scored .
Low probability of exploitation in the next 30 days, but still tracked. 64th percentile — 64.5% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.011 · newest: 0.011 · change: 0.000
Affected products
- Cloud Foundry Uaa — versions 4.7, 4.19, 4.5
- Pivotal Software Cloud Foundry Uaa
Weakness classification (CWE)
References
- www.cloudfoundry.org/blog/cve-2018-11047/ (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.