11 months ago
According to blockchain information institution SlowMist, OKX DEX, a decentralized speech aggregator platform, mislaid cryptocurrency valued astatine implicit $400,000.
An attacker was capable to transportation tokens that users had not allowed by compromising the absorption privileges of a marketplace shaper contract, according to the mentation for the vulnerability.
On the OKX DEX aggregator platform, a deprecated proxy declaration was the taxable of a caller vulnerability that allowed a hacker to get medication entree to the declaration without authorization.
OKX DEX: Deprecated Contract Raises Concerns
When a protocol stops actively utilizing a declaration to transportation retired idiosyncratic transactions, it is considered deprecated. It appears that OKX has updated the declaration but hasn’t wholly stopped utilizing it.
🚨SlowMist Security Alert: OKX DEX Proxy Admin Owner’s Private Key Suspected to beryllium Leaked🚨
According to accusation from SlowMist Zone, the OKX DEX declaration appears to person encountered an issue. After SlowMist’s analysis, it was recovered that erstwhile users exchange, they authorize…
— SlowMist (@SlowMist_Team) December 13, 2023
The claimTokens relation of the OKX DEX astute declaration experienced a problem, according to blockchain information steadfast SlowMist. The TokenApprove contract, which required idiosyncratic authorization, invokes the quality to nonstop currency to a trustworthy DEX Proxy.
On December 12, the SlowMist squad reported that the OKX DEX Proxy Admin Owner upgraded the DEX Proxy declaration with a caller implementation. The intent of this caller implementation was to invoke the claimTokens relation consecutive from the DEX contract.
The speech said that 18 of the approved addresses for the declaration had been compromised, and linked the lawsuit to the absorption rights of a cancelled OKX DEX marketplace shaper declaration being compromised.
Additionally, the speech pledged to wage backmost each impacted users. It would besides transportation retired a broad information introspection successful bid to halt thing akin from happening again.
We regret to pass you that a deprecated astute declaration connected OKX Dex has been compromised. We person taken contiguous enactment to unafraid each idiosyncratic funds and revoke the declaration permissions. We are moving with applicable agencies to find the stolen funds and volition reimburse affected… pic.twitter.com/zDIjhb3ETz
— OKX Web3 (Wallet | DeFi | NFT) (@okxweb3) December 13, 2023
OKX Hack: Actual Damages Unknown
According to PeckShield, different researcher specializing successful blockchain security, this vulnerability has outgo implicit $2.76 million.
In the past 30 days, OKX DEX is thought to person had implicit 50,000 progressive idiosyncratic wallets; however, it is chartless however galore users were impacted by the astir caller hack.
Users should employment caution portion communicating with DeFi protocols, particularly those supported by well-known firms successful the industry, arsenic highlighted by the OKX DEX breach.
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