Published:2024/04/19 Last Updated:2024/04/19
JVNVU#91696361
LINE client for iOS vulnerable to improper server certificate verification
Overview
The financial module within LINE client for iOS lacks server certificate verification in log transmission.
Products Affected
- LINE Client for iOS, versions 13.12.0 or newer, and prior to 13.16.0
Description
The financial module within LINE client for iOS lacks server certificate verification in log transmission (CWE-295, CVE-2023-5554).
Impact
The communication may be eavesdropped under a man-in-the-middle attack.
Solution
Update the Software
Update the software to the latest version according to the information provided by the developer.
Vendor Status
| Vendor | Link |
| LY Corporation | CVE-2023-5554 |
References
JPCERT/CC Addendum
Vulnerability Analysis by JPCERT/CC
CVSS v3
CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:N
Base Score:
4.8
| 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) |
Comment
This analysis assumes that a man-in-the-middle attack is conducted by, for example, directing the victim to connect to a malicious wireless access point.
Credit
LINE Corporation reported this vulnerability to JPCERT/CC to notify users of its solution through JVN.