CVE-2023-40583

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CVE-2023-40583

Summary: libp2p nodes vulnerable to OOM attack

Details: libp2p is a networking stack and library modularized out of The IPFS Project, and bundled separately for other tools to use. In go-libp2p, by using signed peer records a malicious actor can store an arbitrary amount of data in a remote node’s memory. This memory does not get garbage collected and so the victim can run out of memory and crash. If users of go-libp2p in production are not monitoring memory consumption over time, it could be a silent attack i.e. the attacker could bring down nodes over a period of time (how long depends on the node resources i.e. a go-libp2p node on a virtual server with 4 gb of memory takes about 90 sec to bring down; on a larger server, it might take a bit longer.) This issue was patched in version 0.27.4.

References: https://github.com/libp2p/go-libp2p/releases/tag/v0.27.4, https://github.com/libp2p/go-libp2p/releases/tag/v0.27.7, https://github.com/CVEProject/cvelistV5/tree/main/cves/2023/40xxx/CVE-2023-40583.json, https://github.com/libp2p/go-libp2p/security/advisories/GHSA-gcq9-qqwx-rgj3, https://nvd.nist.gov/vuln/detail/CVE-2023-40583, https://github.com/libp2p/go-libp2p/commit/45d3c6fff662ddd6938982e7e9309ad5fa2ad8dd