Instituto Nacional de ciberseguridad. Sección Incibe
Instituto Nacional de Ciberseguridad. Sección INCIBE-CERT

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CVE-2020-5523

Severity CVSS v4.0:
Pending analysis
Type:
CWE-295 Improper Certificate Validation
Publication date:
28/01/2020
Last modified:
31/01/2020

Description

Android App 'MyPallete' and some of the Android banking applications based on 'MyPallete' do not verify X.509 certificates from servers, and also do not properly validate certificates with host-mismatch, which allows man-in-the-middle attackers to spoof servers and obtain sensitive information via a crafted certificate.

Impact

Vector 3.x
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N CVSS v3.1 Severity and Metrics:

Base Score: 7.40 HIGH
Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N

Attack Vector (AV): Network
Attack Complexity (AC): High
Privileges Required (PR): None
User Interaction (UI): None
Scope (S): Unchanged
Confidentiality (C): High
Integrity (I): High
Availability (A): None

Base Score 3.x
7.40
Severity 3.x
HIGH
Vector 2.0
AV:N/AC:M/Au:N/C:P/I:P/A:N CVSS v2.0 Severity and Metrics:

Base Score: 5.80 MEDIUM
Vector: AV:N/AC:M/Au:N/C:P/I:P/A:N

Attack Vector (AV): Network
Attack Complexity (AC): Medium
Authentication (Au): None
Confidentiality (C): Physical
Integrity (I): Physical
Availability (A): None

Base Score 2.0
5.80
Severity 2.0
MEDIUM

Vulnerable products and versions

CPE From Up to
cpe:2.3:a:77bank:77_bank:*:*:*:*:*:android:*:* 2.0.1 (including)
cpe:2.3:a:ashikagabank:ashigin:*:*:*:*:*:android:*:* 1.0.4 (including)
cpe:2.3:a:hokkaidobank:dogin:*:*:*:*:*:android:*:* 3.0.1 (including)
cpe:2.3:a:hokugin:hokuriku_bank_portal:*:*:*:*:*:android:*:* 2.0.1 (including)
cpe:2.3:a:naganobank:nagagin:*:*:*:*:*:android:*:* 1.0.1 (including)
cpe:2.3:a:nttdata:mypallete:-:*:*:*:*:android:*:*
cpe:2.3:a:shikokubank:shikoku_bank:*:*:*:*:*:android:*:* 2.0.1 (including)
cpe:2.3:a:sihd-bk:ikeda_senshu_bank:*:*:*:*:*:android:*:* 3.0.4 (including)
cpe:2.3:a:tohoku-bank:tougin:*:*:*:*:*:android:*:* 1.0.1 (including)

To consult the complete list of CPE names with products and versions, see this page


References to Advisories, Solutions, and Tools