Published:2023/07/24  Last Updated:2023/07/24

JVN#37857022
Improper restriction of XML external entity references (XXE) in Applicant Programme

Overview

Applicant Programme provided by The Ministry of Justice improperly restricts XML external entity references (XXE).

Products Affected

  • Applicant Programme Ver.7.06 and earlier

Description

Applicant Programme provided by The Ministry of Justice 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.

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-2023-32639
JVN iPedia JVNDB-2023-000075