Advisories for Golang/Github.com/Ipfs/Go-Ipfs package

go-ipfs nodes crash when trying to import certain malformed CAR files due to an issue in the go-car dependency. This impacts nodes running ipfs dag import on untrusted user inputs, for example, pinning services with a car ingest endpoint. This include the corresponding HTTP RPC API v0/dag/import endpoint. An attacker controlling the car file passed in can also make the node allocate arbitrary sized buffers creating memory exhaustion attacks.

Allows admin API access to the IPFS node.

It is possible for path traversal to occur with DAGs containing relative paths during retrieval. This can cause files to be overwritten, or written to incorrect output directories. The issue can only occur when a get is done on an affected DAG.

go-ipfs is an open-source golang implementation of IPFS which is a global, versioned, peer-to-peer filesystem. In go-ipfs, control characters are not escaped from console output. This can result in hiding input from the user which could result in the user taking an unknown, malicious action.

An attacker can generate ephemeral identities (Sybils) and leverage the IPFS connection management reputation system to poison other nodes' routing tables, eclipsing the nodes that are the target of the attack from the rest of the network. Later versions, in particular go-ipfs, mitigate this.