CVE-2019-11270 | UAA clients.write vulnerability

Cloud Foundry UAA versions prior to v73.4.0 contain a vulnerability where a malicious client possessing the 'clients.write' authority or scope can bypass the restrictions imposed on clients created via 'clients.write' and create clients with arbitrary scopes that the creator does not possess.

Published: 2019-08-05 Last update: 2024-11-21 Assigner: [email protected] Source: [email protected]
NVD Status：Modified，CVE State: published
View at NVD, CVE.org, EUVD

CVE-2019-11270 is rated Moderate Risk (44.8/100): CVSS High severity, with low exploitation likelihood (EPSS 0.23%). Review affected assets and schedule remediation.

Risk is dynamic; we continuously reassess and refresh what is shown on this page as upstream context changes.

Exploit prediction scoring system (EPSS) score for CVE-2019-11270

EPSS lead: Daily EPSS estimates relative likelihood of exploitation; percentile ranks this CVE among scored vulnerabilities (higher = more severe relative rank).

# Date Old EPSS score New EPSS score Delta (New - Old)
1 2025-03-30 0.44% 0.23% -0.21%
2 2025-03-29 0.23% 0.44% +0.21%
3 2025-03-17 — 0.23% —

Full EPSS history (8 records total)

Common vulnerability scoring system (CVSS) metrics for CVE-2019-11270

CVSS metrics for this CVE.

Base score Version Severity Vector Exploitability Impact Score source
7.5 3.1 HIGH
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N Click to expand
Attack vector (AV:N)
Could be attacked over the internet or any normal routed network—not just someone sitting at the machine.
Attack complexity (AC:L)
Once they can reach the bug, pulling it off is straightforward—no weird race conditions or rare setup.
Privileges required (PR:N)
No account or special rights needed—anonymous or random user is enough.
User interaction (UI:N)
Nobody has to click “OK” or open a trap file; it can work without a victim helping.
Scope (S:U)
Damage stays in the same “trust bubble” as the broken component—no big spill into unrelated systems.
Confidentiality (C:N)
Doesn’t really leak secrets in a meaningful way.
Integrity (I:H)
They could widely tamper with or forge data—trust in the data is badly hurt.
Availability (A:N)
Service keeps running; no real outage angle.
 3.9 3.6 [email protected]
7.3 3.0 HIGH
CVSS:3.0/AV:N/AC:H/PR:H/UI:R/S:C/C:H/I:H/A:N Click to expand
Attack vector (AV:N)
Could be attacked over the internet or any normal routed network—not just someone sitting at the machine.
Attack complexity (AC:H)
Even with access, the exploit needs extra luck, timing, or a fussy environment to actually work.
Privileges required (PR:H)
They need powerful rights—admin, root, or similar—before this pays off.
User interaction (UI:R)
A real person has to do something—click, install, enable—otherwise it doesn’t land.
Scope (S:C)
Breaking this can reach past the original component and bite other resources—bigger blast radius.
Confidentiality (C:H)
Serious risk that confidential data gets exposed in a big way.
Integrity (I:H)
They could widely tamper with or forge data—trust in the data is badly hurt.
Availability (A:N)
Service keeps running; no real outage angle.
 1.0 5.8 [email protected]
5.0 2.0 MEDIUM
AV:N/AC:L/Au:N/C:N/I:P/A:N Click to expand
Access vector (AV:N)
Can be exploited remotely over network reachability.
Access complexity (AC:L)
Exploitation conditions are straightforward and predictable.
Authentication (AU:N)
No authentication is required.
Confidentiality impact (C:N)
No confidentiality impact.
Integrity impact (I:P)
Partial integrity impact.
Availability impact (A:N)
No availability impact.
 10.0 2.9 [email protected]

Weakness enumeration for CVE-2019-11270

Affected software / configurations for CVE-2019-11270

Vendor Product Version Raw CPE
pivotal_software application_service >= 2.3.0, < 2.3.15 cpe:2.3:a:pivotal_software:application_service:*:*:*:*:*:*:*:*
pivotal_software application_service >= 2.4.0, < 2.4.11 cpe:2.3:a:pivotal_software:application_service:*:*:*:*:*:*:*:*
pivotal_software application_service >= 2.5.0, < 2.5.7 cpe:2.3:a:pivotal_software:application_service:*:*:*:*:*:*:*:*
pivotal_software application_service >= 2.6.0, < 2.6.2 cpe:2.3:a:pivotal_software:application_service:*:*:*:*:*:*:*:*
pivotal_software cloud_foundry_uaa < 73.4.0 cpe:2.3:a:pivotal_software:cloud_foundry_uaa:*:*:*:*:*:*:*:*
pivotal_software operations_manager >= 2.3.0, < 2.3.22 cpe:2.3:a:pivotal_software:operations_manager:*:*:*:*:*:*:*:*
pivotal_software operations_manager >= 2.4.0, < 2.4.16 cpe:2.3:a:pivotal_software:operations_manager:*:*:*:*:*:*:*:*
pivotal_software operations_manager >= 2.5.0, < 2.5.10 cpe:2.3:a:pivotal_software:operations_manager:*:*:*:*:*:*:*:*
pivotal_software operations_manager >= 2.6.0, < 2.6.4 cpe:2.3:a:pivotal_software:operations_manager:*:*:*:*:*:*:*:*

References for CVE-2019-11270

cvelogic Threat Intelligence