Published:2020/05/25 Last Updated:2020/05/25
JVN#59552136
Cybozu Desktop for Windows vulenerable to arbitrary code execution
Overview
Cybozu Desktop for Windows contains an arbitrary code execution vulnerability.
Products Affected
- Cybozu Desktop for Windows 2.0.23 to 2.2.40
Description
Cybozu Desktop for Windows provided by Cybozu, Inc. contains an arbitrary code execution vulnerability due to the improper data processing when applying the software update.
Impact
A remote attacker may excecute arbitrary code through an attack, such as a man-in-the-middle (MITM), subdomain takeover, and etc.
Solution
Update the Software
Update to the latest version according to the information provided by the developer.
Vendor Status
| Vendor | Status | Last Update | Vendor Notes |
|---|---|---|---|
| Cybozu, Inc. | Vulnerable | 2020/05/25 | Cybozu, Inc. website |
References
JPCERT/CC Addendum
Vulnerability Analysis by JPCERT/CC
CVSS v3
CVSS:3.0/AV:N/AC:H/PR:N/UI:R/S:C/C:H/I:H/A:H
Base Score:
8.3
| 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:H/Au:N/C:P/I:P/A:P
Base Score:
5.1
| 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
Toshitsugu Yoneyama of Mitsui Bussan Secure Directions, Inc. reported this vulnerability to Cybozu, Inc. and coordinated. Cybozu, Inc. and JPCERT/CC published respective advisories in order to notify users of this vulnerability.
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-2020-5537 |
| JVN iPedia |
JVNDB-2020-000034 |