web3: Ravencoin exposes consensus vulnerabilities, or may trigger a three-day chain reorganization
Coinpaper
1h ago
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Ravencoin Consensus Vulnerability Exposed and Exploited, Networks May Be Rolled Back by About Three Days of History; Exchanges Advised to Suspend RVN Withdrawals.
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Ravencoin 公司披露,其网络出现共识层漏洞,攻击者可在未完成完整工作量证明的情况下生成无效区块。项目方称,这一问题自 8 月 7 日起已被利用,网络目前可能面临约三天的区块链重组。

异常区块始于 4487776 高度

项目方表示,首个已知无效区块出现在区块高度 4,487,776。网络恢复完成前,区块 4,487,775 之后确认的交易都可能被回滚。

这次事件影响的不只是单个钱包或应用,而是链本身的共识过程。也就是说,在受影响时间段内看似已经确认的交易,最终未必会保留在主链上。

矿池正构建排除异常分支的新链

2Miners 和 RavenMiner 目前正构建一条不包含被利用分支的新链。如果这条链累计到足够多的工作量并成为主导分支,Ravencoin 网络将发生一次较深的链重组,覆盖时间大约为三天。

2Miners 称,从 8 月 7 日到 8 月 10 日紧急软件发布前,漏洞利用行为一直存在。在其检查的一段 2,089 个区块范围内,发现其中 96 个区块受到影响。

受漏洞影响,部分节点在重启后可能无法正常运行,尝试同步区块链的节点也可能因无效区块头序列而中断同步。

交易所被建议暂停 RVN 充提

2Miners 已发布 4.6.1.1-hf1 版本软件。该版本会从区块高度 4,487,776 起,拒绝声明高度与实际链上位置不一致的区块,并将 4,487,775 设为检查点,同时加入重建受损链状态的处理逻辑。

Ravencoin 已建议交易所暂停 RVN 充值和提现,并呼吁矿工、交易所、区块浏览器和节点运营方尽快升级软件,等待网络恢复稳定。

市场也对事件作出反应。报道发布时,RVN 价格约为 0.00287 美元,24 小时内下跌约 19%。

补充信息:项目方称,攻击者利用的是共识漏洞而非单一应用故障,因此受影响时段内的链上确认记录都存在被重写的可能。

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