libp2p-rust: Gossipsub PRUNE.backoff Duration Overflow

libp2p-rust is the official rust language Implementation of the libp2p networking stack. In versions prior to 0.49.3, the Gossipsub implementation accepts attacker-controlled PRUNE backoff values and may perform unchecked time arithmetic when storing backoff state. A specially crafted PRUNE control message with an extremely large backoff (e.g. u64::MAX) can lead to Duration/Instant overflow during backoff update logic, triggering a panic in the networking state machine. This is remotely reachable over a normal libp2p connection and does not require authentication. Any application exposing a libp2p Gossipsub listener and using the affected backoff-handling path can be crashed by a network attacker that can reach the service port. The attack can be repeated by reconnecting and replaying the crafted control message. This issue has been fixed in version 0.49.3.

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整数溢出或超界折返

rust-libp2p 输入验证错误漏洞

rust-libp2p是libp2p开源的一种 libp2p 网络堆栈的 Rust 实现。 rust-libp2p 0.49.3之前版本存在输入验证错误漏洞，该漏洞源于Gossipsub实现接受攻击者控制的PRUNE退避值并可能执行未检查的时间运算，可能导致网络状态机崩溃。

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