Remote code execution in Cloud Foundry cflinuxfs3 and CF Deployment

Published: 2021-03-23
Risk High
Patch available YES
Number of vulnerabilities 1
CVE ID CVE-2021-21300
Exploitation vector Network
Public exploit N/A
Vulnerable software
Other software / Other software solutions

CF Deployment
Server applications / Frameworks for developing and running applications

Vendor Cloud Foundry Foundation

Security Advisory

This security advisory describes one high risk vulnerability.

1) Code Injection

Risk: High

CVSSv3.1: 7.7 [CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C] [PCI]

CVE-ID: CVE-2021-21300

CWE-ID: CWE-94 - Improper Control of Generation of Code ('Code Injection')

Exploit availability: No


The vulnerability allows a remote attacker to execute arbitrary code on the target system.

The vulnerability exists due to improper input validation in Git for Visual Studio. A remote attacker can send a specially crafted request and execute arbitrary code on the target system.

Successful exploitation of this vulnerability may result in complete compromise of vulnerable system.


Install updates from vendor's website.

Vulnerable software versions

cflinuxfs3: 0.200.0, 0.201.0, 0.202.0, 0.203.0, 0.204.0, 0.205.0, 0.206.0, 0.207.0, 0.208.0, 0.209.0, 0.210.0, 0.211.0, 0.212.0, 0.213.0, 0.214.0, 0.215.0, 0.216.0, 0.217.0, 0.218.0, 0.219.0, 0.220.0, 0.221.0, 0.222.0, 0.223.0, 0.224.0, 0.225.0, 0.226.0, 0.227.0, 0.228.0

CF Deployment: 16.0.0, 16.1.0, 16.2.0, 16.3.0, 16.4.0, 16.5.0, 16.6.0

CPE External links

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.