CVE-2021-20873 Information

Description

Yappli is an application development platform which provides the function to access a requested URL using Custom URL Scheme. When Android apps are developed with Yappli versions since v7.3.6 and prior to v9.30.0 they are vulnerable to improper authorization in Custom URL Scheme handler and may be directed to unintended sites via a specially crafted URL.

CVSS Vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:N

Reference

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

Attack Complexity

LOW

Privileges Required

NONE

User Interaction Required

NONE

Scope

REQUIRED

Confidentiality Impact

UNCHANGED

Integrity Impact

HIGH

Availability Impact

HIGH

Base Score

NONE

Base Severity

8.1