Improper Authentication in Nextcloud Files iOS

1) Improper Authentication

EUVDB-ID: #VU84546

Risk: Low

CVSSv3.1: 3.8 [CVSS:3.1/AV:P/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L/E:U/RL:O/RC:C]

CVE-ID: CVE-2023-49790

CWE-ID: CWE-287 - Improper Authentication

Exploit availability: No

Description

The vulnerability allows a local attacker to bypass authentication process.

The vulnerability exists due to an error in when processing authentication requests within the App PIN code. An attacker with physical access can use the application without providing the 4 digit PIN code.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

Files iOS: 4.9.1

External links

http://github.com/nextcloud/security-advisories/security/advisories/GHSA-j8g7-88vv-rggv

Q & A

Can this vulnerability be exploited remotely?

No. The attacker should have physical access to the system in order to successfully exploit this vulnerability.

How the attacker can exploit this vulnerability?

The attacker would have to trick the victim to perform certain actions on the device.

Is there known malware, which exploits this vulnerability?

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