Vulnerability identifier: #VU23776

Vulnerability risk: High

CVSSv3.1: 7.1 [CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N/E:U/RL:O/RC:C]

CVE-ID: CVE-2019-19687

CWE-ID: CWE-522

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
OpenStack Keystone
Client/Desktop applications / Other client software

Vendor: Openstack

Description

The vulnerability allows a remote attacker to list any credentials.

The vulnerability exists due to data leakage in the list credentials API. A remote user with a role on a project can list any credentials with the "/v3/credentials" API when "enforce_scope" is false.

Mitigation
Install updates from vendor's website.

Vulnerable software versions

OpenStack Keystone: 15.0.0 - 16.0.0

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External links
http://www.openwall.com/lists/oss-security/2019/12/11/8
http://access.redhat.com/errata/RHSA-2019:4358
http://bugs.launchpad.net/keystone/+bug/1855080
http://review.opendev.org/#/c/697355/
http://review.opendev.org/#/c/697611/
http://review.opendev.org/#/c/697731/
http://security.openstack.org/ossa/OSSA-2019-006.html

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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.