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    3. Crypto Crisis Averted: Inside Solana’s Secret Patch for Confidential Token Exploits

    Crypto Crisis Averted: Inside Solana’s Secret Patch for Confidential Token Exploits

    By: ethnews|2025/05/04 23:00:03
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    A Solana ZK-Proof flaw allowed forging confidential token transfers; patches rolled out within 48 hours to prevent exploits.Engineers fixed unhashed data gaps in Solana’s ZK ElGamal program, stopping unauthorized mints or withdrawals.In April 2025, a security report submitted to the Anza GitHub repository outlined a potential flaw in Solana’s ZK ElGamal Proof program, a component tied to its confidential token system. The report included a proof of concept demonstrating how an attacker could create invalid proofs that the program might accept. Engineers from Anza, Firedancer, and Jito confirmed the issue within hours, finding that unhashed data in the program’s verification process could allow forged transactions.No exploits were detected before the patchBy the evening of April 17, Solana Foundation and Jito teams began privately distributing a fix to validator operators. Later that night, a second related flaw was identified, prompting another update. Both patches underwent review by security firms Asymmetric Research, Neodyme, and OtterSec before reaching validators. By April 18, over two-thirds of the network’s validators had implemented the fixes, ensuring the blockchain’s security. A public announcement followed that evening, confirming the cluster’s stability.Solana’s Token-2022 standard, which supports confidential transfers, relies on two components: the Token-2022 program for managing tokens and the ZK ElGamal Proof program for verifying encrypted balances. The latter uses a cryptographic method called the Fiat-Shamir Transformation to convert interactive proofs into non-interactive ones. This process requires hashing all mathematical inputs to generate verification parameters.The vulnerability stemmed from incomplete hashing during proof verification. Attackers could exploit this gap to fabricate transactions, such as minting tokens without authorization or withdrawing from protected accounts. The patch, released in versions Agave v2.1.21/Jito-Solana v2.1.21-jito and later iterations, corrected the hashing process. Firedancer’s update (v0.411.20121) incorporated the same adjustments.No changes were needed for the Token-2022 program itself, as the issue was isolated to the proof system. Security audits conducted prior to the incident and post-patch reviews confirmed the solution’s effectiveness.The coordinated response prevented disruption to Solana’s network. Validators adopted the updates swiftly, and no funds were compromised. While the incident underscores the challenges of securing complex cryptographic systems, the resolution highlights the effectiveness of collaborative problem-solving in decentralized environments.For users of Token-2022 confidential tokens, the takeaway is clear: the system remains secure, but vigilance is part of the process. Developers continue to prioritize proactive measures, ensuring that potential risks are addressed before they materialize.Source: SOL/TradingviewAs of now, Solana (SOL) is trading at $146.27, showing a -0.88% decrease in the last 24 hours and a -2.18% decline over the past 7 days. Its market capitalization stands at approximately $75.77 billion, placing it firmly in the top 10 cryptocurrencies. With a circulating supply of over 520 million tokens, SOL continues to be one of the leading Layer 1 blockchains focused on high-speed, low-cost transactions.From a technical standpoint, SOL remains bullish over the medium-term with gains of 18.6% over the last 30 days, though recent corrections signal possible consolidation. Its trading volume in the past 24 hours is around $1.7 billion, slightly lower, which may indicate some cooling in short-term momentum. Key resistance remains near $150, while strong support holds around the $140 mark.Based on current chart patterns and market sentiment, ETHNews predict SOL may reach $162.50 within the next 7–10 days, assuming no major market disruption. However, a failure to hold $140 support could bring it down to $134 briefly.The post Crypto Crisis Averted: Inside Solana’s Secret Patch for Confidential Token Exploits appeared first on ETHNews.

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