Improper Authentication in Fujitsu Si-R series and SR-M series network devices

1) Improper Authentication

EUVDB-ID: #VU78676

Risk: Low

CVSSv3.1: 5.9 [CVSS:3.1/AV:A/AC:H/PR:N/UI:N/S:U/C:L/I:H/A:L/E:U/RL:U/RC:C]

CVE-ID: CVE-2023-38555

CWE-ID: CWE-287 - Improper Authentication

Exploit availability: No

Description

The vulnerability allows a remote attacker to bypass authentication process.

The vulnerability exists due to an error in when processing authentication requests in the web management interface. A remote attacker on the local network can obtain the product's configuration information or change/reset the configuration settings.

Mitigation

Cybersecurity Help is currently unaware of any official solution to address this vulnerability.

Vulnerable software versions

Si-R 30B: All versions

Si-R 130B: All versions

Si-R 90brin: All versions

Si-R570B: All versions

Si-R370B: All versions

Si-R220D: All versions

Si-R G100: 02.54

Si-R G200: 02.54

Si-R G100B: 04.12

Si-R G110B: 04.12

Si-R G200B: 04.12

Si-R G210: 20.52

Si-R G211: 20.52

Si-R G120: 20.52

Si-R G121: 20.52

SR-M 50AP1: All versions

External links

http://jvn.jp/en/vu/JVNVU96643580/index.html
http://www.fujitsu.com/jp/products/network/support/2023/fjlan-01/

Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the local network (LAN).

How the attacker can exploit this vulnerability?

The attacker would have to send a specially crafted request to the affected device in order to exploit this vulnerability.

Is there known malware, which exploits this vulnerability?

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