network-libp2p: Peer can crash the node by opening discovery protocol substream twice

Nimiq's network-libp2p is a Nimiq network implementation based on libp2p. Prior to version 1.3.0, `network-libp2p` discovery uses a libp2p `ConnectionHandler` state machine. the handler assumes there is at most one inbound and one outbound discovery substream per connection. if a remote peer opens/negotiate the discovery protocol substream a second time on the same connection, the handler hits a `panic!(\"Inbound already connected\")` / `panic!(\"Outbound already connected\")` path instead of failing closed. This causes a remote crash of the networking task (swarm), taking the node's p2p networking offline until restart. The patch for this vulnerability is formally released as part of v1.3.0. No known workarounds are available.

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

可达断言

Nimiq 安全漏洞

Nimiq是Nimiq开源的一个Albatross协议的Rust实现。 Nimiq 1.3.0之前版本存在安全漏洞，该漏洞源于network-libp2p发现使用libp2p ConnectionHandler状态机。该处理程序假设每个连接最多有一个入站和一个出站发现子流。如果远程对等方在同一连接上第二次打开/协商发现协议子流，处理程序会触发panic!，导致网络任务崩溃，使节点的p2p网络离线直至重启。

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