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| author | Evgeny Medvedev <evgeny@kitchenup.com> | 2017-11-14 03:49:40 +0800 |
|---|---|---|
| committer | Alex Beregszaszi <alex@rtfs.hu> | 2017-12-12 11:31:00 +0800 |
| commit | 2f6f81640bca9fb358db12b088ff82f9b4f132bd (patch) | |
| tree | 78675ce8325c3d87255da05e8fa8e018c6597dae /docs/installing-solidity.rst | |
| parent | 539b8f3b45183ea28219ab31bea73ea033616006 (diff) | |
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Add another contract with call to demonstrate re-entrancy vulnerability.
Add another contract with call to demonstrate re-entrancy vulnerability as send explicitly sets gas to 2300 by default according to this commit 9ca7472 which makes it impossible to "get multiple refunds" because a non-zero CALL costs at least 9700 gas. This issue is discussed on Ethereum StackExchange https://ethereum.stackexchange.com/questions/30371/send-ether-reentrancy-attack-in-reality-how-could-fallback-function-make-a-mes/30616#30616
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