unguarded burn function
The Sandbox publicly announced the migration of LAND smart contracts due to a discovered vulnerability. However, the statement did not specify the details of the vulnerability. The SlowMist’s security team investigated the vulnerability.
In the past, the _burn function that was set to be called was set in a public state. Even though there is a require(from == owner, “not owner”); in the function, the from in the function can still be constructed by any caller. This could results in anyone burning other players NFTs at will.
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