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



Published: 2020-02-25
Risk Medium
Patch available YES
Number of vulnerabilities 2
CVE-ID CVE-2020-5400
CVE-2020-5402
CWE-ID CWE-312
CWE-352
Exploitation vector Network
Public exploit N/A
Vulnerable software
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CF Deployment
Server applications / Frameworks for developing and running applications

Cloud Controller
Web applications / Modules and components for CMS

Cloud Foundry UAA
Server applications / Web servers

Vendor Cloud Foundry Foundation

Security Bulletin

This security bulletin contains information about 2 vulnerabilities.

1) Cleartext storage of sensitive information

EUVDB-ID: #VU25574

Risk: Medium

CVSSv3.1: 5.7 [CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N/E:U/RL:O/RC:C]

CVE-ID: CVE-2020-5400

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

Exploit availability: No

Description

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.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

CF Deployment: 12.0.0 - 12.32.0

Cloud Controller: before 1.91.0

External links

http://www.cloudfoundry.org/blog/cve-2020-5400/


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.

2) Cross-site request forgery

EUVDB-ID: #VU25575

Risk: Low

CVSSv3.1: 5.3 [CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N/E:U/RL:O/RC:C]

CVE-ID: CVE-2020-5402

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

Exploit availability: No

Description

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.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

CF Deployment: 12.0.0 - 12.32.0

Cloud Foundry UAA: 74.0.0 - 74.13.0

External links

http://www.cloudfoundry.org/blog/cve-2020-5402/


Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.

Is there known malware, which exploits this vulnerability?

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



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