Published:2020/01/21  Last Updated:2020/01/21

JVN#66435380
Multiple Fuji Xerox mobile applications fails to verify SSL server certificates

Overview

Multiple Fuji Xerox mobile applications fail to verify SSL server certificates.

Products Affected

  • netprint App for iOS 3.2.3 and earlier - CVE-2020-5520
  • kantan netprint App for iOS 2.0.2 and earlier - CVE-2020-5521
  • kantan netprint App for Android 2.0.3 and earlier - CVE-2020-5522
According to the developer, netprint App for Android is not affected by this vulnerability.

Description

Multiple Fuji Xerox mobile applications fail to verify SSL server certificates (CWE-295).

Impact

A man-in-the-middle attack may allow an attacker to eavesdrop on an encrypted communication.

Solution

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

Vendor Status

Vendor Status Last Update Vendor Notes
Fuji Xerox Co.,Ltd. Vulnerable 2020/01/21 Fuji Xerox Co.,Ltd. website

References

JPCERT/CC Addendum

Vulnerability Analysis by JPCERT/CC

CVSS v3 CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:N
Base Score: 4.8
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:N/AC:H/Au:N/C:P/I:P/A:N
Base Score: 4.0
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

This analysis assumes a man-in-the-middle attack being conducted by an attacker that places a malicious wireless LAN access point.

Credit

Hirotaka Niisato 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-2020-5520
CVE-2020-5521
CVE-2020-5522
JVN iPedia JVNDB-2020-000006