JVN#75742861
Improper restriction of XML external entity references (XXE) in National land numerical information data conversion tool
Overview
National land numerical information data conversion tool provided by Ministry of Land, Infrastructure, Transport and Tourism, Japan (MLIT) improperly restricts XML external entity references (XXE).
Products Affected
- National land numerical information data conversion tool, all versions
Description
National land numerical information data conversion tool provided by MLIT improperly restricts XML external entity references (XXE) (CWE-611).
Impact
By processing a specially crafted XML file, arbitrary files on the PC may be accessed by an attacker.
Solution
Stop using the product
The developer states that the product is no longer publicly available, and recommends users to stop using the product.
Vendor Status
| Vendor | Link |
| Ministry of Land, Infrastructure, Transport and Tourism, Japan | Provision of National land numerical information data conversion tool suspended (Text in Japanese) |
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
The analysis evaluates "Confidentiality(C)" as the primary impact where the internal file information is accessible, whereas treating "Integrity(I)" and "Availability(A)" as the secondary impacts.
Credit
Taku Toyama and Kohei Matsumoto of NEC Corporation 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-2023-25955 |
| JVN iPedia |
JVNDB-2023-000032 |