CVSS 3.1
7.4 highCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:NCVE-2020-5523
High (7.4). EPSS 1.2% chance of exploitation in the next 30 days.
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.
Severity
- EPSS
- 1.2% chance of exploitation in the next 30 days; higher than 67% of CVEs (scores of 2026-10-31)
- CWE
- CWE-295
- Published
- Modified
- Record from
- the NVD, synced
Affected
- 77bank:77_bank
- ashikagabank:ashigin
- hokkaidobank:dogin
- hokugin:hokuriku_bank_portal
- naganobank:nagagin
- nttdata:mypallete
- shikokubank:shikoku_bank
- sihd-bk:ikeda_senshu_bank
- tohoku-bank:tougin
References
- http://jvn.jp/en/jp/JVN28845872/index.html
- http://www.dokodemobank.ne.jp/info_20200128_bankingapp.html
- https://www.77bank.co.jp/pdf/oshirase/20012801_appvulnerability.pdf
- https://www.ashikagabank.co.jp/appbanking/pdf/oshirase.pdf
- https://www.hokkaidobank.co.jp/common/dat/2020/0120/15795047141946146699.pdf