JVN#41185163
Installers of the screensavers provided by JAPAN AIR SELF DEFENSE FORCE, MINISTRY OF DEFENSE may insecurely load Dynamic Link Libraries
Overview
Installers of the screensavers provided by JAPAN AIR SELF DEFENSE FORCE, MINISTRY OF DEFENSE may insecurely load Dynamic Link Libraries.
Products Affected
Following installers of the screensavers provided by JAPAN AIR SELF DEFENSE FORCE, MINISTRY OF DEFENSE are affected by this vulnerability:
- jasdf_01.exe
- jasdf_02.exe
- jasdf_03.exe
- jasdf_04.exe
- jasdf_05.exe
- scramble_setup.exe
- clock_01_setup.exe
- clock_02_setup.exe
Description
Installers of the screensavers provided by JAPAN AIR SELF DEFENSE FORCE, MINISTRY OF DEFENSE contain an issue with the DLL search path, which may lead to insecurely loading Dynamic Link Libraries.
Impact
This vulnerability can be exploited when the following condition is met. If this vulnerability is exploited, arbitrary code may be executed with the privilege of the user invoking the installer.
- A user is tricked into placing a malicious DLL file prepared by an attacker in a specific folder.
Solution
Do not install the screensavers
The screensavers are no longer being developed or maintained. It is recommended not to install the screensavers.
Users who have already installed the screensavers are not affected by this vulnerability.
Vendor Status
| Vendor | Link |
| JAPAN AIR SELF DEFENSE FORCE, MINISTRY OF DEFENSE | DLL loading vulnerability in the screensaver installers |
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) |
Comment
This analysis assumes that the user is tricked into placing a malicious DLL file prepared by an attacker in a specific folder.
Credit
Eili Masami of Tachibana Lab. 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-2017-2176 |
| JVN iPedia |
JVNDB-2017-000101 |