SB2020022507 - Multiple vulnerabilities in Cloud Foundry UAA, Cloud Controller (CAPI) and CF Deployment

Description

This security bulletin contains information about 2 vulnerabilities.

1) Cleartext storage of sensitive information (CVE-ID: CVE-2020-5400)

CWE-ID: CWE-312 - Cleartext Storage of Sensitive Information

CVSSv4: CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N/E:U/U:Green

The vulnerability allows a remote attacker to gain access to potentially sensitive information.

The vulnerability exists due to the affected software logs app environment variables when an app is deployed using a server-side manifest, which may include sensitive information such as credentials if provided to the job. A remote authenticated attacker with access to those logs may gain unauthorized access to resources protected by such credentials.

2) Cross-site request forgery (CVE-ID: CVE-2020-5402)

CWE-ID: CWE-352 - Cross-Site Request Forgery (CSRF)

CVSSv4: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N/E:U/U:Clear

The vulnerability allows a remote attacker to perform cross-site request forgery attacks.

The vulnerability exists due to the OAuth2 state parameter not being checked in the "callback" function when authenticating with external identity providers. A remote attacker can trick the victim to visit a specially crafted web page and perform arbitrary actions on behalf of the victim on the vulnerable website.

Remediation

Install update from vendor's website.

References

• https://www.cloudfoundry.org/blog/cve-2020-5400/
• https://www.cloudfoundry.org/blog/cve-2020-5402/