CVE-2021-36689

Public Exploit

Description

An issue discovered in com.samourai.wallet.PinEntryActivity.java in Streetside Samourai Wallet 0.99.96i allows attackers to view sensitive information and decrypt data via a brute force attack that uses a recovered samourai.dat file. The PIN is 5 to 8 digits, which may be insufficient in this situation.

Category

5.5
CVSS
Severity: Medium
CVSS 3.1 •
EPSS 0.03%
Third-Party Advisory samourai.io Third-Party Advisory vrls.ws
Affected: n/a n/a
Published at:
Updated at:

References

Link Tags
https://code.samourai.io/wallet/samourai-wallet-android/-/blob/develop/app/src/main/java/com/samourai/wallet/PinEntryActivity.java#L302 third party advisory
https://vrls.ws/posts/2021/08/samourai-wallet-bitcoin-pin-authentication-bypass-crypto/ exploit third party advisory technical description

Frequently Asked Questions

What is the severity of CVE-2021-36689?
CVE-2021-36689 has been scored as a medium severity vulnerability.
How to fix CVE-2021-36689?
To fix CVE-2021-36689, 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-2021-36689 being actively exploited in the wild?
It is possible that CVE-2021-36689 is being exploited or will be exploited in a near future based on public information. According to its EPSS score, there is a ~0% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
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