JVN#18743512
Cybozu KUNAI for Android vulnerable to denial-of-service (DoS)
Overview
Cybozu KUNAI for Android contains a denial-of-service (DoS) vulnerability.
Products Affected
- Cybozu KUNAI for Android 3.0.20 to 3.0.21
Description
Cybozu KUNAI for Android is a client application for using Cybozu products from an Android device. Cybozu KUNAI for Android contains an issue allowing to send massive requests to the connected Cybozu product if a user performs certain operations on KUNAI, which may result in repeated session disconnections in a short period of time and preventing normal use of KUNAI (CWE-436).
Impact
A user of KUNAI could cause a denial of service (DoS) condition by performing certain operations.
Solution
Update the Software
Update the software to the latest version according to the information provided by the developer.
Vendor Status
| Vendor | Status | Last Update | Vendor Notes |
|---|---|---|---|
| Cybozu, Inc. | Vulnerable | 2024/02/06 | Cybozu, Inc. website |
References
JPCERT/CC Addendum
Vulnerability Analysis by JPCERT/CC
| 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) |
| 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
Cybozu, Inc. reported this vulnerability to JPCERT/CC to notify users of the solution through JVN.
Other Information
| JPCERT Alert |
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| JPCERT Reports |
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| CERT Advisory |
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| CPNI Advisory |
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| TRnotes |
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| CVE |
CVE-2024-23304 |
| JVN iPedia |
JVNDB-2024-000017 |