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Fencer Intel
medium 5.3

GHSA-qvqg-6rp8-4p9h json

github.com/ipfs/kubo affected by DOS Bitswap unbounded persistent memory leak

published 3y ago modified 3y ago

cvss
5.3
version 3.1, GitHub
cisa kev
Not listed
not in CISA's catalog
epss
—
no score, EPSS covers CVEs only
public exploits
0
none known

Summary

### Impact An attacker is able allocate arbitrarily many bytes in the Bitswap server by sending many `WANT_BLOCK` and or `WANT_HAVE` requests which are queued in an unbounded queue, with allocations that persist even if the connection is closed.

This affects users accepting or connecting untrusted connections such as by running in the public swarm and no pnet config. Nodes that are not publicly reachable but connects to untrusted nodes are also vulnerable to the untrusted nodes being connected to since libp2p connections are blindly bidirectional.

### Patches - 19feb15833c6f4d6e7f1e1b132efaae96d76481d [`boxo`](https://github.com/ipfs/boxo) update in Kubo - GHSA-m974-xj4j-7qv5 patches in boxo

### Workarounds

Use [PNET](https://github.com/ipfs/kubo/blob/master/docs/experimental-features.md#private-networks), [swarm filters](https://github.com/ipfs/kubo/blob/master/docs/config.md#swarmaddrfilters) or [resource manager allows list](https://pkg.go.dev/github.com/libp2p/go-libp2p/p2p/host/resource-manager#readme-allowlisting-multiaddrs-to-mitigate-eclipse-attacks) to block untrusted connections.

Note that using the resource manager will disrupt both client and server features because the bitswap protocol is a message based protocol mixing requests and responses.

### References - GHSA-m974-xj4j-7qv5 - [CVE-2023-25568](https://nvd.nist.gov/vuln/detail/CVE-2023-25568)

Patch / fix

  • go github.com/ipfs/kubo 0.19.0

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CVSS scores

assigned by version score vector
GitHub 3.1 5.3 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L

Affected packages

ecosystem package affected fixed in
go github.com/ipfs/kubo
<0.19.0
0.19.0

Classification

Weakness
  • CWE-400 Uncontrolled Resource Consumption
  • CWE-770 Allocation of Resources Without Limits or Throttling

References

Sources

Fencer Intel keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.