What is CVE-2021-20733?

CVE-2021-20733 is a medium-severity vulnerability in Asken, classified under Missing Authorization. CVSS score: 6.1/10. Published 2021-06-22.

How severe is CVE-2021-20733?

Medium severity. CVSS v3 base score is 6.1 out of 10.

Auth bypass in Asken

CVE-2021-20733

Improper authorization in handler for custom URL scheme vulnerability in あすけんダイエット (asken diet) for Android versions from v.3.0.0 to v.4.2.x allows a remote attacker to lead a user to access an arbitrary website via the vulnerable App.

Vulnerability class: Broken Access Control

EPSS: 0.008 (53.6th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 6.1 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N.

Affected products

Asken
Asken Inc. あすけんダイエット (Asken Diet) For Android — versions versions from v.3.0.0 to v.4.2.x

Weakness classification (CWE)

CWE-862 — Missing Authorization

References

vultures@jpcert.or.jp (Permissions Required, x_refsource_MISC, Vendor Advisory)
vultures@jpcert.or.jp (Third Party Advisory, x_refsource_MISC)

Frequently asked questions

What is CVE-2021-20733?: CVE-2021-20733 is a medium-severity vulnerability in Asken, classified under Missing Authorization. CVSS score: 6.1/10. Published 2021-06-22.
How severe is CVE-2021-20733?: Medium severity. CVSS v3 base score is 6.1 out of 10.