Multiple vulnerabilities in cflinuxfs3

Published: 2023-05-22 | Updated: 2023-06-29

Risk	High
Patch available	YES
Number of vulnerabilities	2
CVE-ID	CVE-2023-28755 CVE-2023-28756
CWE-ID	CWE-185
Exploitation vector	Network
Public exploit	Public exploit code for vulnerability #1 is available.
Vulnerable software Subscribe	cflinuxfs3 Other software / Other software solutions
Vendor	Cloud Foundry Foundation

Security Bulletin

This security bulletin contains information about 2 vulnerabilities.

1) Incorrect Regular Expression

EUVDB-ID: #VU74004

Risk: Medium

CVSSv3.1: 6.7 [CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H/E:P/RL:O/RC:C]

CVE-ID: CVE-2023-28755

CWE-ID: CWE-185 - Incorrect Regular Expression

Exploit availability: No

Description

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

The vulnerability exists due to insufficient input validation when processing URLs. A remote attacker can pass specially crafted URL to the application and perform regular expression denial of service (ReDos) attack.

Mitigation

Install update from vendor's website.

Vulnerable software versions

cflinuxfs3: 0.0.0 - 0.365.0

External links

http://github.com/cloudfoundry/cflinuxfs3/releases/tag/0.366.0

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. However, proof of concept for this vulnerability is available.

2) Incorrect Regular Expression

EUVDB-ID: #VU74007