What is CVE-2022-43543?

CVE-2022-43543 is a medium-severity vulnerability in Docomo \+ Message, classified under Improper Encoding or Escaping of Output. CVSS score: 5.4/10. Published 2022-12-21.

How severe is CVE-2022-43543?

Medium severity. CVSS v3 base score is 5.4 out of 10.

Vulnerability in Docomo \+ Message

CVE-2022-43543

KDDI +Message App, NTT DOCOMO +Message App, and SoftBank +Message App contain a vulnerability caused by improper handling of Unicode control characters. +Message App displays text unprocessed, even when control characters are contained, and the text is shown based on Unicode control character's specifications. Therefore, a crafted text may display misleading web links. As a result, a spoofed URL may be displayed and phishing attacks may be conducted. Affected products and versions are as follows: KDDI +Message App for Android prior to version 3.9.2 and +Message App for iOS prior to version 3.9.4, NTT DOCOMO +Message App for Android prior to version 54.49.0500 and +Message App for iOS prior to version 3.9.4, and SoftBank +Message App for Android prior to version 12.9.5 and +Message App for iOS prior to version 3.9.4

EPSS: 0.005 (39.3th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 5.4 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:N.

Affected products

Docomo \+_message
Kddi \+_message
Kddi Corporation, Ntt Docomo, Inc., And Softbank Corp. +message App For Android Ios, Docomo Ios — versions KDDI +Message App for Android prior to version 3.9.2 and +Message App for iOS prior to version 3.9.4, NTT DOCOMO +Message App for Android prior to version 54.49.0500 and +Message App for iOS prior to version 3.9.4, and SoftBank +Message App for Android prior to version 12.9.5 and +Message App for iOS prior to version 3.9.4
Softbank \+_message

Weakness classification (CWE)

CWE-116 — Improper Encoding or Escaping of Output

References

vultures@jpcert.or.jp (Vendor Advisory)
vultures@jpcert.or.jp (Vendor Advisory)
vultures@jpcert.or.jp (Vendor Advisory)
vultures@jpcert.or.jp (Third Party Advisory)

Frequently asked questions

What is CVE-2022-43543?: CVE-2022-43543 is a medium-severity vulnerability in Docomo \+ Message, classified under Improper Encoding or Escaping of Output. CVSS score: 5.4/10. Published 2022-12-21.
How severe is CVE-2022-43543?: Medium severity. CVSS v3 base score is 5.4 out of 10.