Published:2023/10/02  Last Updated:2023/10/02

JVN#39596244
Improper restriction of XML external entity references (XXE) in FD Application

Overview

FD Application provided by Ministry of Health, Labour and Welfare improperly restricts XML external entity references (XXE).

Products Affected

  • FD Application Apr. 2022 Edition (Version 9.01) and earlier

Description

FD Application provided by Ministry of Health, Labour and Welfare improperly restricts XML external entity references (XXE) (CWE-611).

Impact

By processing a specially crafted XML file, arbitrary files on the system may be read by an attacker.

Solution

Update the Software
Update the software to the latest version according to the information provided by the developer.
The developer addressed the vulnerability in the following version:

  • FD Application Sep. 2023 Edition (Version 9.02)

Vendor Status

Vendor Link
Ministry of Health, Labour and Welfare FD Application Download Web Site (Text in Japanese)

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 "Confidentiality(C)" as the primary impact where the internal files are accessible, whereas "Integrity(I)" and "Availability(A)" as the secondary impacts.

Credit

Toyama Taku and Sakaki Ryutaro 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-2023-42132
JVN iPedia JVNDB-2023-000096