Vulnerability identifier: #VU59175

Vulnerability risk: Low

CVSSv3.1: 4.8 [CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:N/E:U/RL:O/RC:C]

CVE-ID: CVE-2021-20873

CWE-ID: CWE-939

Exploitation vector: Local

Exploit availability: No

Vulnerable software:
Yappli
Mobile applications / Apps for mobile phones

Vendor: Yappli

Description

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

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

Mitigation
Install updates from vendor's website.

Vulnerable software versions

Yappli: 7.3.6

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External links
http://jvn.jp/en/jp/JVN66422035/index.html
http://support.yappli.co.jp/hc/ja/articles/4410249902745

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Q & A

Can this vulnerability be exploited remotely?

No. This vulnerability can be exploited locally. The attacker should have authentication credentials and successfully authenticate on the system.

Is there known malware, which exploits this vulnerability?

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