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The vulnerability in Finality Provider versions up to 1.0.3 stems from a misconfiguration where EOTS manager endpoints are exposed without HMAC authentication. Anti-slashing mechanisms designed to prevent malicious slashing are bypassed when these endpoints are publicly accessible. Attackers can directly interact with the RPC interface, crafting and sending specific requests to trigger slashing manually. The lack of HMAC protection means no cryptographic verification is required, allowing unauthorized access. This misconfiguration essentially nullifies anti-slashing features, as the software assumes endpoints are network-isolated or authenticated. In deployed environments, if endpoints are inadvertently exposed to the internet, attackers can exploit this to cause slashing penalties. This leads to financial losses for providers and disrupts blockchain network reliability. The core issue is insufficient access controls on critical endpoints, compromising overall security. Patching involves both software updates and configuration changes to enable HMAC and restrict access.
Platform: Finality Provider
Version: <=1.0.3
Vulnerability: Anti-slashing bypass
Severity: High
Date: 2025-12-12
Prediction: Patch expected soon
What Undercode Say:
Analytics:
curl -v http://
nmap -p
netstat -tulpn | grep
How Exploit:
curl -X POST http://
RPC request crafting
Bypass HMAC authentication
Protection from this CVE:
Enable HMAC protection
Restrict endpoint access
Network firewall rules
Impact:
Unauthorized slashing penalties
Financial losses
Network instability
🎯Let’s Practice Exploiting & Learn Patching For Free:
Sources:
Reported By: github.com
Extra Source Hub:
Undercode
