JVN#34508179
Installer of "Setup file of advance preparation" may insecurely load Dinamic Link Libraries
Overview
Installer of "Setup file of advance preparation" provided by National Tax Agency may insecurely load Dinamic Link Libraries.
Products Affected
- Installer of "Setup file of advance preparation" (jizen_setup.exe) (The version which was available on the website prior to 2017 June 12)
Description
"Setup file of advance preparation" provided by National Tax Agency is software to setup the environment which is required to use "filing assistance on the NTA website".
"Setup file of advance preparation" contains an issue with the DLL search path, which may lead to insecurely loading Dynamic Link Libraries.
Impact
Arbitrary code may be executed with the privilege of the user invoking the installer.
Solution
Use the latest installer
Use the latest installer according to the information provided by the developer.
Vendor Status
References
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Japan Vulnerability Notes JVNTA#91240916
Insecure DLL Loading and Command Execution Issues on Many Windows Application Programs
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) |
Comment
This analysis assumes that the user is tricked into placing a malicious DLL file prepared by an attacker in a specific folder.
Credit
Takashi Yoshikawa of Mitsui Bussan Secure Directions 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-2017-2215 |
| JVN iPedia |
JVNDB-2017-000129 |
Update History
- 2017/06/28
- Information under the section [Products Affected] and [Solution] was modified and the vendor link under [Vedor Status] was added.