Quantum Secular Labs / Blog / Advisories
CVE-2017-4992: Cloudfoundry Cf Release: Privilege escalation
CVE-2017-4992 is rated critical with a CVSS v3.1 base score of 9.8 and affects Cloudfoundry Cf Release, along with 2 other products in NVD’s configuration data. Per its scoring, it can be exploited over the network, without authentication, without any user interaction. The scored impact on confidentiality, integrity and availability is the highest available.
Vulnerability description
An issue was discovered in Cloud Foundry Foundation cf-release versions prior to v261; UAA release 2.x versions prior to v2.7.4.17, 3.6.x versions prior to v3.6.11, 3.9.x versions prior to v3.9.13, and other versions prior to v4.2.0; and UAA bosh release (uaa-release) 13.x versions prior to v13.15, 24.x versions prior to v24.10, 30.x versions prior to 30.3, and other versions prior to v37. There is privilege escalation (arbitrary password reset) with user invitations.
Severity breakdown
CVSS v3.1 9.8: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
- Attack vector: Network. Exploitable remotely over the network, with no need for local or physical access.
- Attack complexity: Low. No special conditions; the attack can be repeated reliably.
- Privileges required: None. No account or prior access is needed.
- User interaction: None. No action from any user is needed.
- Scope: Unchanged. Impact stays within the vulnerable component.
- Confidentiality impact: High. Total loss of confidentiality; sensitive data can be fully disclosed.
- Integrity impact: High. Total loss of integrity; data or system state can be fully modified.
- Availability impact: High. Total loss of availability; the component can be shut down.
Underlying weakness
CWE-269: Improper Privilege Management
The product does not properly assign, modify, track, or check privileges for an actor, creating an unintended sphere of control for that actor.
Affected products
- Cloudfoundry Cf Release: up to and including 260
- Cloud Foundry Uaa Bosh: up to and including 27; 13.1; 13.2; 13.3; 13.4; 13.5; 13.6; 13.7; 13.8; 13.9; 13.10; 13.11
- Pivotal Software Cloud Foundry Uaa: up to and including 4.2.0; 2.2.5.4; 2.7.1; 2.7.2; 2.7.3; 2.7.4; 2.7.4.1; 2.7.4.2; 2.7.4.3; 2.7.4.4; 2.7.4.5; 2.7.4.6