Vulnerability identifier: #VU16595

Vulnerability risk: Low

CVSSv3.1: 5.5 [CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L/E:U/RL:O/RC:C]

CVE-ID: CVE-2018-15754

CWE-ID: CWE-285

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
Cloud Foundry UAA
Server applications / Web servers

Vendor: Cloud Foundry Foundation

Description

The vulnerability allows a remote authenticated attacker to bypass security restrictions on the target system.

The vulnerability exists due to an authorization logic error. In environments with multiple identity providers that contain accounts across identity providers with the same username, a remote authenticated with access to one of these accounts can bypass authorization to obtain a token for an account of the same username in the other identity provider.

Mitigation
Update to version 66.0.

Vulnerable software versions

Cloud Foundry UAA: 60.0 - 64.0

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External links
http://www.cloudfoundry.org/blog/cve-2018-15754/

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Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote authenticated user via the Internet.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.