Polygon has previously disclosed several private security vulnerabilities that could disrupt its proof-of-stake network, after deploying fixes through two recent hard forks.
The vulnerabilities affected Polygon’s Bohr and Heimdall clients and included the risk of denial of service, exhausting verifier resources and errors that affected checkpoint and milestone processing, according to Thursday. disclosure From Polygon Labs’ Validator Support Team.
Polygon said the flaws were fixed through Austin and Kyoto hard forks, which were privately deployed and tested before being activated on the mainnet and publicly released.
The most serious problem involves Heimdall, where a specially crafted transaction can force validators to perform additional processing tasks, potentially disrupting the network. The Austin hard fork separately addressed two denial-of-service risks in Bore that could slow block processing or crash nodes.
According to Polygon, no exploits were observed on the mainnet, which said fixes were actively deployed before the details were released.
Nodes with older versions of any clients past the hard fork activation height are already out of compliance and must be upgraded to rejoin the canonical network, according to the release. Bor v2.10.0 is required for all Polygon PoS nodes, while Heimdall v0.11.0 is required for validators and full nodes, both upgrades are already active on the mainnet.
POL, Polygon’s native token formerly known as MATIC, was trading around $0.10 at the time of writing, down about 4% last week but up 44% last month and 2.3% year over year, according to CoinGecko. Information.
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