CVE-2020-5523

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.

Category

7.4
CVSS
Severity: High
CVSS 3.1 •
CVSS 2.0 •
EPSS 0.38%
Third-Party Advisory jvn.jp Third-Party Advisory ne.jp Third-Party Advisory co.jp Third-Party Advisory co.jp Third-Party Advisory co.jp Third-Party Advisory co.jp Third-Party Advisory co.jp Third-Party Advisory co.jp Third-Party Advisory sihd-bk.jp Third-Party Advisory co.jp
Affected: NTT Data Corporation 'MyPallete' and some of the Android banking applications that use 'MyPallete'
Published at:
Updated at:

References

Link Tags
http://www.dokodemobank.ne.jp/info_20200128_bankingapp.html third party advisory
https://www.ashikagabank.co.jp/appbanking/pdf/oshirase.pdf third party advisory
https://www.sihd-bk.jp/common_v2/pdf/20200127.pdf third party advisory
https://www.shikokubank.co.jp/info/apps20200128.html third party advisory
https://www.tohoku-bank.co.jp/news/topics/200128_applissl.html third party advisory
https://www.naganobank.co.jp/soshiki/2/app-ssl.html third party advisory
https://www.77bank.co.jp/pdf/oshirase/20012801_appvulnerability.pdf third party advisory
https://www.hokkaidobank.co.jp/common/dat/2020/0120/15795047141946146699.pdf third party advisory
https://www.hokugin.co.jp/info/archives/personal/2020/1913.html third party advisory
http://jvn.jp/en/jp/JVN28845872/index.html third party advisory

Frequently Asked Questions

What is the severity of CVE-2020-5523?
CVE-2020-5523 has been scored as a high severity vulnerability.
How to fix CVE-2020-5523?
To fix CVE-2020-5523, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2020-5523 being actively exploited in the wild?
As for now, there are no information to confirm that CVE-2020-5523 is being actively exploited. According to its EPSS score, there is a ~0% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
What software or system is affected by CVE-2020-5523?
CVE-2020-5523 affects NTT Data Corporation 'MyPallete' and some of the Android banking applications that use 'MyPallete'.
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