Published:2022/12/21 Last Updated:2022/12/21
JVN#43561812
+Message App improper handling of Unicode control characters
Overview
+Message App contains a vulnerability caused by improper handling of Unicode control characters.
Products Affected
SoftBank Corp.
- +Message App for Android prior to version 12.9.5
- +Message App for iOS prior to version 3.9.4
- +Message App for Android prior to version 54.49.0500
- +Message App for iOS prior to version 3.9.4
- +Message App for Android prior to version 3.9.2
- +Message App for iOS prior to version 3.9.4
Description
+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 (CWE-451).
Impact
A spoofed URL may be displayed and phishing attacks may be conducted.
Solution
Update the Application
Update to the latest version according to the information provided by the developer.
Vendor Status
| Vendor | Status | Last Update | Vendor Notes |
|---|---|---|---|
| KDDI CORPORATION | Vulnerable | 2022/12/21 | KDDI CORPORATION website |
| NTT DOCOMO, INC. | Vulnerable | 2022/12/21 | NTT DOCOMO, INC. website |
| SoftBank Corp. | Vulnerable | 2022/12/21 | SoftBank Corp. website |
References
-
Unicode Technical Report #36: UNICODE SECURITY CONSIDERATIONS
2.5 Bidirectional Text Spoofing
JPCERT/CC Addendum
Vulnerability Analysis by JPCERT/CC
CVSS v3
CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:N
Base Score:
4.3
| Attack Vector(AV) | Physical (P) | Local (L) | Adjacent (A) | Network (N) |
|---|---|---|---|---|
| Attack Complexity(AC) | High (H) | Low (L) | ||
| Privileges Required(PR) | High (H) | Low (L) | None (N) | |
| User Interaction(UI) | Required (R) | None (N) | ||
| Scope(S) | Unchanged (U) | Changed (C) | ||
| Confidentiality Impact(C) | None (N) | Low (L) | High (H) | |
| Integrity Impact(I) | None (N) | Low (L) | High (H) | |
| Availability Impact(A) | None (N) | Low (L) | High (H) |
CVSS v2
AV:N/AC:M/Au:N/C:N/I:P/A:N
Base Score:
4.3
| Access Vector(AV) | Local (L) | Adjacent Network (A) | Network (N) |
|---|---|---|---|
| Access Complexity(AC) | High (H) | Medium (M) | Low (L) |
| Authentication(Au) | Multiple (M) | Single (S) | None (N) |
| Confidentiality Impact(C) | None (N) | Partial (P) | Complete (C) |
| Integrity Impact(I) | None (N) | Partial (P) | Complete (C) |
| Availability Impact(A) | None (N) | Partial (P) | Complete (C) |
Credit
Akaki Tsunoda reported this vulnerability to IPA.
JPCERT/CC coordinated with the developer under Information Security Early Warning Partnership.
Other Information
| JPCERT Alert | |
| JPCERT Reports | |
| CERT Advisory | |
| CPNI Advisory | |
| TRnotes | |
| CVE |
CVE-2022-43543 |
| JVN iPedia |
JVNDB-2022-000101 |