Iron Fish confirms the inflation vulnerability and will terminate network support
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AT A GLANCE
Iron Fish said that its blockchain had an inflation vulnerability allowing the same note to be reused, and would terminate the network’s remaining support.
Article
privacy-focused public blockchain Iron Fish formally shuts down the network due to a severe vulnerability
PANews October 31 reported that the privacy-focused public blockchain Iron Fish said it would terminate all remaining support for the Iron Fish network later that day. The team said it had recently discovered abnormal activity involving wIRON and the ChainPort cross-chain bridge. After investigating in collaboration with ChainPort, it confirmed that the root cause was Iron Fish blockchain’s own inflation vulnerability. The vulnerability can be traced to a commit in the Merkle tree implementation at the beginning of 2019 year. At the time, developers implemented a standard Merkle tree, but due to a subtle difference in how the “note’s nullifier” (the mechanism that allows users to spend their funds) was calculated, attackers were able to use the same note multiple times. The attackers then exploited this vulnerability to combine multiple notes...
PANews October 31 reported that Iron Fish said it would terminate all remaining support for the Iron Fish network later that day.
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The team recently discovered abnormal activity involving wIRON and the ChainPort cross-chain bridge.
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Iron Fish After investigating in collaboration with ChainPort, it confirmed that the root cause was Iron Fish blockchain’s own inflation vulnerability.
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The vulnerability can be traced to 2019 a commit in the Merkle tree implementation at the beginning of the year.
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Due to a subtle difference in how the note’s nullifier was calculated, attackers were able to use the same note multiple times.
AI-assisted interpretation
The following is analysis, separate from reported facts. Verify important claims independently.
Simply put, the system should have used the note’s nullifier to prevent the same funds from being spent repeatedly, but an implementation difference enabled attackers to reuse the same note.Iron Fish It therefore said it would terminate the network’s remaining support.
Why it matters to readers
Reusing the same note could create additional assets and affect the Iron Fish network and the wIRON security and credibility of cross-chain activity; ending support will also affect the network’s future use.
If you hold, use, or bridge assets related to wIRON and Iron Fish, you should closely review subsequent announcements from the project team and ChainPort regarding asset status, disposition, and migration.
Risks and unknowns
The provided text is truncated at “combine multiple notes,” so the subsequent attack process cannot be confirmed.
The evidence does not specify the precise asset losses or scope of impact caused by the abnormal activity and vulnerability.
The evidence does not provide the exact time support will end or a plan for handling users’ assets.
The headline says “shuts down the network,” but the body only clearly states that all remaining support will be terminated; it cannot be confirmed whether this is equivalent to formally shutting down the network.
The complete official announcement and independent technical review information are unavailable.
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Related concepts
Merkle tree
A data structure that hashes multiple transactions layer by layer, ultimately consolidating them into a Merkle root.
