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

JVN#40049211
Improper restriction of XML external entity references (XXE) in Electronic Deliverables Creation Support Tool provided by Ministry of Defense

Overview

Electronic Deliverables Creation Support Tool provided by Ministry of Defense improperly restricts XML external entity references (XXE).

Products Affected

  • Electronic Deliverables Creation Support Tool (Construction Edition) prior to Ver1.0.4
  • Electronic Deliverables Creation Support Tool (Design & Survey Edition) prior to Ver1.0.4

Description

Electronic Deliverables Creation Support Tool provided by Ministry of Defense 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.

Vendor Status

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 of NEC Corporation 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-2024-21796
JVN iPedia JVNDB-2024-000009