Multiple vulnerabilities in Cloud Foundry cflinuxfs3 and CF Deployment

Published: 2021-03-23

Risk	High
Patch available	YES
Number of vulnerabilities	2
CVE-ID	CVE-2021-24031 CVE-2021-24032
CWE-ID	CWE-276
Exploitation vector	Network
Public exploit	N/A
Vulnerable software Subscribe	cflinuxfs3 Other software / Other software solutions CF Deployment Server applications / Frameworks for developing and running applications
Vendor	Cloud Foundry Foundation

Security Bulletin

This security bulletin contains information about 2 vulnerabilities.

1) Incorrect default permissions

EUVDB-ID: #VU51639

Risk: High

CVSSv3.1: 7.9 [CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N/E:U/RL:O/RC:C]

CVE-ID: CVE-2021-24031

CWE-ID: CWE-276 - Incorrect Default Permissions

Exploit availability: No

Description

The vulnerability allows a remote attacker to escalate privileges on the system.

The vulnerability exists due to incorrect default permissions for files and folders that are set by the application within the command-line utility. A remote attacker can view contents of files and directories or modify them.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

cflinuxfs3: 0.200.0 - 0.227.0

CF Deployment: 16.0.0 - 16.6.0

External links

http://www.cloudfoundry.org/blog/usn-4760-1/

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.

2) Incorrect default permissions

EUVDB-ID: #VU51640