CVE-2026-73568: libp2p py-libp2p, отказ на услуга

Описание

Оригинално описание

py-libp2p is the Python implementation of the libp2p networking stack. In 0.7.0 and earlier, the yamux handle_incoming() method in libp2p/stream_muxer/yamux/yamux.py reads an attacker-controlled 32-bit DATA frame length with read_exactly() before validating it against MAX_WINDOW_SIZE or checking whether stream_id exists. A peer that completes the standard Noise handshake can send a 12-byte frame declaring a 0xFFFFFFFF body and then withhold the body, causing the sequential yamux read loop used by the default new_host() configuration to block and preventing every stream on that connection from making progress. No fixed version is available as of this review.

Засегнати продукти

• libp2p py-libp2p: <= 0.7.0

Вид слабост

• CWE-400 Неконтролирано потребление на ресурси

История

Други уязвимости в libp2p py-libp2p

• 4.3CVE-2025-29606

Първоизточници

• https://www.cve.org/CVERecord?id=CVE-2026-73568
• https://nvd.nist.gov/vuln/detail/CVE-2026-73568
• https://github.com/libp2p/py-libp2p/security/advisories/GHSA-hmj8-5xmh-5573
• https://github.com/libp2p/py-libp2p/commit/146ea87d1a20cc7dacf684ecf7c204543be04b37