JVN#39605485
The installer of The Public Certification Service for Individuals "The JPKI user's software" may insecurely load Dynamic Link Libraries
Overview
The installer of The Public Certification Service for Individuals "The JPKI user's software" may insecurely load Dynamic Link Libraries.
Note that this vulnerability is different from JVN#91002412.
Products Affected
Installers of the following "The JPKI user's software" versions that were available until April 27, 2017, are affected:
- The Public Certification Service for Individuals "The JPKI user's software (for Windows 7 and later)" Ver3.1 and earlier
- The Public Certification Service for Individuals "The JPKI user's software (for Windows Vista)"
- The Public Certification Service for Individuals "The JPKI user's software" Ver2.6 and earlier
Description
The installer of The Public Certification Service for Individuals "The JPKI user's software" provided by Japan Agency for Local Authority Information Systems (J-LIS) 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 of The Public Certification Service for Individuals "The JPKI user's software"
Use the latest installer of The Public Certification Service for Individuals "The JPKI user's software", according to the information provided by J-LIS.
Note that The Public Certification Service for Individuals "The JPKI user's software (for Windows Vista)" and the software Ver2.6 are no longer being developed or maintained.
Vendor Status
| Vendor | Link |
| Japan Agency for Local Authority Information Systems | JPKI Client Software for Windows download |
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) |
Credit
Eiji James Yoshida of Security Professionals Network Inc. and Takashi Yoshikawa of Mitsui Bussan Secure Directions, 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-2017-2157 |
| JVN iPedia |
JVNDB-2017-000083 |