CVE-2026-57080— Sanko Robinson Net::BitTorrent 资源管理错误漏洞

Net::BitTorrent versions through 2.1.0 for Perl allow remote memory exhaustion via an uncapped peer-wire message-length prefix

Net::BitTorrent versions through 2.1.0 for Perl allow remote memory exhaustion via an uncapped peer-wire message-length prefix. The peer-wire framing in _process_messages trusts the 4-byte length prefix sent by a connected peer with no upper bound, while receive_data appends every inbound byte to the input buffer. A peer announces a length prefix of up to about 4 GiB and then streams bytes; the decoder waits until the buffer holds the full message before processing it, so the buffer grows without limit. Peer connections are unauthenticated, so any peer in the swarm exhausts the downloading process's memory. The largest legitimate message is a 16 KiB piece block, so any announced length far above that is anomalous.

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不加限制或调节的资源分配

Sanko Robinson Net::BitTorrent 资源管理错误漏洞

Sanko Robinson Net::BitTorrent是Sanko Robinson个人开发者的一个基于现代 Perl（v5.40+）从头重写的高性能 BitTorrent 客户端库，支持 BitTorrent v2、DHT、协议加密等完整功能，且可与任意事件循环集成。 Sanko Robinson Net::BitTorrent 2.0.1及之前版本存在资源管理错误漏洞，该漏洞源于未限制对等方线缆消息长度前缀，导致输入缓冲区无限制增长，可能造成远程内存耗尽。

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