Denial of service in Cloud Foundry Foundation Cloud Controller and CF Deployment



Published: 2020-12-02
Risk Medium
Patch available YES
Number of vulnerabilities 1
CVE-ID CVE-2020-5423
CWE-ID CWE-20
Exploitation vector Network
Public exploit N/A
Vulnerable software
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Cloud Controller
Web applications / Modules and components for CMS

CF Deployment
Server applications / Frameworks for developing and running applications

Vendor Cloud Foundry Foundation

Security Bulletin

This security bulletin contains one medium risk vulnerability.

1) Input validation error

EUVDB-ID: #VU48746

Risk: Medium

CVSSv3.1: 6.5 [CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H/E:U/RL:O/RC:C]

CVE-ID: CVE-2020-5423

CWE-ID: CWE-20 - Improper input validation

Exploit availability: No

Description

The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.

The vulnerability exists due to insufficient validation of user-supplied input. A remote attacker can send specially crafted YAML files to certain endpoints and perform a denial of service (DoS) attack.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

Cloud Controller: before 1.101.0

CF Deployment: 13.0.0 - 14.0.0

External links

http://www.cloudfoundry.org/blog/cve-2020-5423


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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