Published:2024/01/23  Last Updated:2024/01/23

JVN#77736613
Improper restriction of XML external entity references (XXE) in MLIT "Electronic Delivery Check System" and "Electronic delivery item Inspection Support System"

Overview

"Electronic Delivery Check System" and "Electronic delivery item Inspection Support System" provided by Ministry of Land, Infrastructure, Transport and Tourism, Japan improperly restricts XML external entity references (XXE).

Products Affected

  • Electronic Delivery Check System (Doboku) Ver.18.1.0 and earlier
  • Electronic Delivery Check System (Dentsu) Ver.12.1.0 and earlier
  • Electronic Delivery Check System (Kikai) Ver.10.1.0 and earlier
  • Electronic delivery item Inspection Support System Ver.4.0.31 and earlier

Description

"Electronic Delivery Check System" and "Electronic delivery item Inspection Support System" provided by Ministry of Land, Infrastructure, Transport and Tourism, Japan improperly restricts XML external entity references (XXE) (CWE-611).

Impact

Processing a specially crafted XML file may lead to exposure of internal files on the system.

Solution

Update the Software
Update the software to the latest version according to the information provided by the developer.

References

JPCERT/CC Addendum

Vulnerability Analysis by JPCERT/CC

CVSS v3 CVSS:3.0/AV:L/AC:H/PR:N/UI:R/S:U/C:L/I:N/A:N
Base Score: 2.5
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)
CVSS v2 AV:L/AC:H/Au:N/C:P/I:N/A:N
Base Score: 1.2
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 treats the internal files exposure as the primary impact "Confidentiality(C)".

Credit

Toyama Taku, Iwakawa Kento of NEC Corporation, and Manami Kawauchi of NEC Fielding,Ltd. reported this vulnerability to IPA.
JPCERT/CC coordinated with the developer under Information Security Early Warning Partnership.

Other Information

JPCERT Alert
JPCERT Reports
CERT Advisory
CPNI Advisory
TRnotes
CVE CVE-2024-21765
JVN iPedia JVNDB-2024-000008