JVN#40039627
Chrome Extension for e-Tax Reception System vulnerable to arbitrary command execution
Overview
Chrome Extension for e-Tax Reception System contains an arbitrary command execution vulnerability under certain conditions.
Products Affected
- Chrome Extension for e-Tax Reception System Ver1.0.0.0
Description
Chrome Extension for e-Tax Reception System provided by National Tax Agency is an extension to use the e-Tax Reception System on Google Chrome and/or Chromium-based versions of Microsoft Edge. When a user runs a Chrome Extension for e-Tax Reception System, a specially crafted parameter by an attacker is fed to the Chrome Extension for e-Tax Reception and COM objects are manipulated, which may result in arbitrary command execution.
Impact
A remote attacker may execute an arbitrary command.
Solution
Update the Chrome Extension for e-Tax Reception System
Update Chrome Extension for e-Tax Reception System to the latest version according to the information provided by the developer.
Vendor Status
| Vendor | Link |
| National Tax Agency | Upgrade of Chrome extension provided by the National Tax Agency（June 18,2020） |
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
ucq of Cyber Defense Institute, 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-2020-5601 |
| JVN iPedia |
JVNDB-2020-000040 |