JVN#68418039
The installers of E START products may insecurely load Dynamic Link Libraries
Overview
The installers of E START products by GMO INSIGHT Inc. may insecurely load Dynamic Link Libraries.
Products Affected
- E START App Version 3.0.2.0 and earlier
- E START Update Center Version 2.0.8.0 and earlier
Description
The installers of E START products by GMO INSIGHT Inc. contain an issue with the DLL search path, which may lead to insecurely loading Dynamic Link Libraries in the folder specified by the TEMP environment variable or where the installer resides (CWE-427, CVE-2015-9267, and CVE-2015-9268).
Impact
Arbitrary code may be executed with the privilege of the user invoking the installer.
Solution
Use the latest installer
Use the latest installer provided by the developer.
Users who already have installed the software do not need to re-install, because this issue affects the installers only.
Vendor Status
| Vendor | Link |
| GMO INSIGHT Inc. | E START App (Only in Japanese) |
| E START Update Center (Only in Japanese) |
References
-
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
BlackWingCat of PinkFlyingWhale 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-2015-9267 |
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CVE-2015-9268 |
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| JVN iPedia |
JVNDB-2021-000018 |