SB2021050703 - Login error in Bitcoin Core bip125
Published: May 7, 2021
Security Bulletin ID
SB2021050703
CSH Severity
Medium
Patch available
YES
Number of vulnerabilities
1
Exploitation vector
Remote access
Highest impact
Data manipulation
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 1 vulnerability.
1) Business Logic Errors (CVE-ID: CVE-2021-31876)
CWE-ID: CWE-840 - Business Logic Errors (3.0)
CVSSv4: CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N/E:U/U:Green
The vulnerability allows a remote attacker to bypass certain security restrictions.
The vulnerability exists due to a logic error in Bitcoin Core bip125 logic, related to processing of unconfirmed transactions. A remote attacker can perform state-of-the-art pinning attacks or have other impact on various wallets.
Remediation
Install update from vendor's website.