Published:2017/04/20 Last Updated:2017/04/20
JVN#54268888
Multiple JustSystems products including Hanako may insecurely load Dynamic Link Libraries
Overview
Hanako and multiple software suites containing Hanako provided by JustSystems Corporation may insecurely load Dynamic Link Libraries.
Products Affected
- Hanako 2017
- Hanako 2016
- Hanako 2015
- Hanako Pro 3
- JUST Office 3 [Standard]
- JUST Office 3 [Eco Print Package]
- JUST Office 3 & Tri-De DataProtect Package
- JUST Government 3
- JUST Jump Class 2
- JUST Frontier 3
- JUST School 6 Premium
- Hanako Police 5
- JUST Police 3
- Hanako 2017 trial version
Description
Hanako and multiple software suites containing Hanako provided by JustSystems Corporation contain an issue with the DLL search path, which may lead to insecurely loading Dynamic Link Libraries.
Impact
Arbitrary code may be executed with the privileges of the user running the application.
Solution
Update the Software
Update to the latest version according to the information provided by the developer.
Vendor Status
| Vendor | Link |
| JustSystems Corporation | [JS17002] Vulnerability in Hanako may allow arbitrary code execution |
References
JPCERT/CC Addendum
Vulnerability Analysis by JPCERT/CC
CVSS v3
CVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Base Score:
7.8
| 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) |
CVSS v2
AV:N/AC:M/Au:N/C:P/I:P/A:P
Base Score:
6.8
| 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
Eiji James Yoshida of Security Professionals Network Inc. reported this vulnerability to IPA.
JPCERT/CC coordinated with the developer under Information Security Early Warning Partnership.
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-2017-2154 |
| JVN iPedia |
JVNDB-2017-000076 |