Vulnerability identifier: #VU54859

Vulnerability risk: Low

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

CVE-ID: CVE-2021-20747

CWE-ID: CWE-939

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
Retty App for Android
Mobile applications / Apps for mobile phones
Retty App for iOS
Mobile applications / Apps for mobile phones

Vendor:

Description

The vulnerability allows a remote attacker to compromise the target system.

The vulnerability exists due to the affected app is launched by Custom URL Scheme. A remote attacker can trick a victim to access an arbitrary URL. 

Mitigation
Install updates from vendor's website.

Vulnerable software versions

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External links
http://jvn.jp/en/jp/JVN26891339/index.html
http://drive.google.com/file/d/1PBYqIsK8QxEEhGJ4SEgpY7iZw3RTTDho/view

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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.