CVE-2021-36689 : Exploit Details and Defense Strategies
Discover how CVE-2021-36689 exposes Streetside Samourai Wallet to data decryption via brute force attacks. Learn about impact, affected versions, and mitigation steps.
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.
Understanding CVE-2021-36689
This section provides insights into the nature of the vulnerability and its impact.
What is CVE-2021-36689?
CVE-2021-36689 is a security flaw identified in Streetside Samourai Wallet that enables attackers to access sensitive information by performing a brute force attack using a recovered samourai.dat file.
The Impact of CVE-2021-36689
The vulnerability exposes user data to potential decryption, posing a significant risk to the confidentiality and security of information stored in the wallet.
Technical Details of CVE-2021-36689
This section delves into specific technical aspects of the CVE.
Vulnerability Description
The issue arises from an inadequate level of security in the PIN entry mechanism of the Samourai Wallet, where a 5 to 8-digit PIN can be easily cracked through a brute force method using a samourai.dat file.
Affected Systems and Versions
The vulnerability affects Streetside Samourai Wallet version 0.99.96i.
Exploitation Mechanism
Attackers exploit the weak PIN setup to gain unauthorized access to user data via decryption techniques, compromising the confidentiality of the stored information.
Mitigation and Prevention
This section offers guidance on reducing the risk associated with CVE-2021-36689.
Immediate Steps to Take
Users are advised to refrain from using the affected version and consider migrating to a more secure wallet solution that implements robust security practices.
Long-Term Security Practices
Implementing strong, complex PINs and regularly updating wallet applications can enhance security posture and mitigate the risk of unauthorized access.
Patching and Updates
It is crucial for users to stay informed about security patches and updates released by the wallet provider to address existing vulnerabilities and maintain a secure environment.