#VU63456 Improper access control in Rakuten Casa - CVE-2022-28704

Vulnerability identifier: #VU63456

Vulnerability risk: Medium

CVSSv4.0: 6.6 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N/E:U/U:Green]

CVE-ID: CVE-2022-28704

CWE-ID: CWE-284

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
Rakuten Casa
Mobile applications / Apps for mobile phones

Vendor: Rakuten Mobile

Description

The vulnerability allows a remote attacker to gain unauthorized access to otherwise restricted functionality.

The vulnerability exists due to improper access restrictions. A remote attacker can bypass implemented security restrictions and gain unauthorized access to sensitive information on the system.

Mitigation
Install updates from vendor's website.

Vulnerable software versions

Rakuten Casa: AP_F_V1_4_1 - AP_F_V2_0_0

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External links
https://jvn.jp/en/jp/JVN46892984/index.html
https://network.mobile.rakuten.co.jp/information/news/product/1033/

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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.