Lightning Network discovered vulnerability, which allows to remove bitcoins from circulation

Adding Wumbo channels to the Lightning Network network has created a new vulnerability. This was noticed by the developer of solutions for the scaling of Bitcoin Yust Yager.

1/ Lightning is Great, But Can’s Its Battle-Tested. IF Script Kids Woold Be Interest, They Coup Take Down Those Shiny New 5 BTC #wumbo Channels with Negligible Cost and No Effort ALL. Pic.Twitter.COM/9PTKXFF042

– Joost Jager (@joostjgr) September 22, 2020

According to him, Wumbo channels, regardless of maximum throughput, are not able to store more than 483 hashes and contracts with time (HTLC) at the same time.

“An attacker can use up available resources by sending 483 micallors to his address. Such an operation blocks a Wumbo channel for up to two weeks, ”Yager writes.

The attack does not require much effort and large sums – when using the maximum length and repeating payments, you can achieve the goal of the goal very quickly.

“It is enough for the creator of the script to send only 54 payment so that one channel removes two -digit amounts in Bitcoin,” the expert notes.

Yust Yager began to develop an inter -grid screen for Lightning nodes, which will eliminate the bug.

“There are other attacks because of which you can lose money, and they seem more serious. But this vulnerability is one of the largest in the sense that we do not know how to eliminate it, ”he wrote.

Support for Wumbo channels was implemented in Lightning Network in August. They remove the initially established restrictions on throughput, which allows you to transfer larger amounts in bitcoin at the second level of the network.

We will remind, earlier the support of the Wumbo channels was announced by the Bitfinex Exchange.

Subscribe to FORKLOG news in Telegram: Forklog Feed – the whole news feed Accredited Singaporean , FORKLOG – the most important news and polls.