Constantinople enables new Reentrancy Attack

ChainSecurity
Jan 15, 2019 · 4 min read
Image for post
Image for post
Image: Hagia Sophia. From Guillaume-Joseph Grelot, Relation nouvelle d’un voyage de Constantinople (Paris: Pierre Rocolet, 1680).

What’s wrong with this code?

An example for newly vulnerable code.
Attacker Contract listed as first address.

Why is this attackable now?

Is my smart contract vulnerable?

Are there vulnerable smart contracts out there?

Thanks

ChainSecurity

From the world of secure smart contracts

Welcome to a place where words matter. On Medium, smart voices and original ideas take center stage - with no ads in sight. Watch
Follow all the topics you care about, and we’ll deliver the best stories for you to your homepage and inbox. Explore
Get unlimited access to the best stories on Medium — and support writers while you’re at it. Just $5/month. Upgrade

Get the Medium app

A button that says 'Download on the App Store', and if clicked it will lead you to the iOS App store
A button that says 'Get it on, Google Play', and if clicked it will lead you to the Google Play store