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CVE-2016-6658: Cloudfoundry Cf Release: Exposure of Sensitive Information to an Unauthorized Actor

CVE-2016-6658 is rated critical with a CVSS v3.0 base score of 9.6 and affects Cloudfoundry Cf Release, along with 1 other product in NVD’s configuration data. Per its scoring, it can be exploited over the network, without any user interaction.

Vulnerability description

Applications in cf-release before 245 can be configured and pushed with a user-provided custom buildpack using a URL pointing to the buildpack. Although it is not recommended, a user can specify a credential in the URL (basic auth or OAuth) to access the buildpack through the CLI. For example, the user could include a GitHub username and password in the URL to access a private repo. Because the URL to access the buildpack is stored unencrypted, an operator with privileged access to the Cloud Controller database could view these credentials.

Severity breakdown

CVSS v3.0 9.6: CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:N

  • 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: Low. A basic user account is enough.
  • User interaction: None. No action from any user is needed.
  • Scope: Changed. Impact reaches beyond the vulnerable component to other resources.
  • 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: None. No effect on availability.

Underlying weakness

CWE-200: Exposure of Sensitive Information to an Unauthorized Actor

The product exposes sensitive information to an actor that is not explicitly authorized to have access to that information.

Affected products

  • Cloudfoundry Cf Release: before 245
  • Pivotal Software Cloud Foundry Elastic Runtime: before 1.6.49; from 1.7.0 before 1.7.31; from 1.8.0 before 1.8.11

References