Vulnerability 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.
CVSS Score
HIGH
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| 77Bank | 77 Bank | <= 2.0.1 |
| Ashikagabank | Ashigin | <= 1.0.4 |
| Hokkaidobank | Dogin | <= 3.0.1 |
| Hokugin | Hokuriku Bank Portal | <= 2.0.1 |
| Naganobank | Nagagin | <= 1.0.1 |
| Nttdata | Mypallete | - |
| Shikokubank | Shikoku Bank | <= 2.0.1 |
| Sihd-Bk | Ikeda Senshu Bank | <= 3.0.4 |
| Tohoku-Bank | Tougin | <= 1.0.1 |
Related Weaknesses (CWE)
References
- http://jvn.jp/en/jp/JVN28845872/index.htmlThird Party Advisory
- http://www.dokodemobank.ne.jp/info_20200128_bankingapp.htmlThird Party Advisory
- https://www.77bank.co.jp/pdf/oshirase/20012801_appvulnerability.pdfThird Party Advisory
- https://www.ashikagabank.co.jp/appbanking/pdf/oshirase.pdfThird Party Advisory
- https://www.hokkaidobank.co.jp/common/dat/2020/0120/15795047141946146699.pdfThird Party Advisory
- https://www.hokugin.co.jp/info/archives/personal/2020/1913.htmlThird Party Advisory
- https://www.naganobank.co.jp/soshiki/2/app-ssl.htmlThird Party Advisory
- https://www.shikokubank.co.jp/info/apps20200128.htmlThird Party Advisory
- https://www.sihd-bk.jp/common_v2/pdf/20200127.pdfThird Party Advisory
- https://www.tohoku-bank.co.jp/news/topics/200128_applissl.htmlThird Party Advisory
- http://jvn.jp/en/jp/JVN28845872/index.htmlThird Party Advisory
- http://www.dokodemobank.ne.jp/info_20200128_bankingapp.htmlThird Party Advisory
- https://www.77bank.co.jp/pdf/oshirase/20012801_appvulnerability.pdfThird Party Advisory
- https://www.ashikagabank.co.jp/appbanking/pdf/oshirase.pdfThird Party Advisory
- https://www.hokkaidobank.co.jp/common/dat/2020/0120/15795047141946146699.pdfThird Party Advisory
FAQ
What is CVE-2020-5523?
CVE-2020-5523 is a vulnerability with a CVSS score of 7.4 (HIGH). 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-mismat...
How severe is CVE-2020-5523?
CVE-2020-5523 has been rated HIGH with a CVSS base score of 7.4/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2020-5523?
Check the references section above for vendor advisories and patch information. Affected products include: 77Bank 77 Bank, Ashikagabank Ashigin, Hokkaidobank Dogin, Hokugin Hokuriku Bank Portal, Naganobank Nagagin.