JVN#18641169
Installer and self-extracting archive containing the installer of TDB CA TypeA use software may insecurely load Dynamic Link Libraries
Overview
The installer and self-extracting archive containing the installer of TDB CA TypeA use software may insecurely load Dynamic Link Libraries.
Products Affected
- TDB CA TypeA use software version 5.2 and earlier, distributed until 10 August 2017
Description
TDB CA TypeA use software provided by Teikoku Databank, Ltd. is a software which provides environment for using system and management function of TDB electronic authentication service TypeA. The installer and the self-extracting archive containing the installer of TDB CA TypeA use software contain an issue with the DLL search path, which may lead to insecurely loading Dynamic Link Libraries (CWE-427).
Impact
Arbitrary code may be executed with the privilege of the user invoking the installer or the self-extracting archive.
Solution
Use the latest self-extracting archive and invoke the installer carefully
Use the latest self-extracting archive according to the information provided by the developer.
Re-installation of the application is not necessary, because this issue affects the installer only.
Vendor Status
| Vendor | Status | Last Update | Vendor Notes |
|---|---|---|---|
| Teikoku Databank, Ltd. | Vulnerable | 2017/08/18 | Teikoku Databank, Ltd. website |
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
This analysis assumes that the user is tricked into placing a malicious DLL file prepared by an attacker in a specific folder.
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-2017-10824 |
| JVN iPedia |
JVNDB-2017-000198 |