CVE-2020-12821 — Gossipsub 1

Gossipsub 1.0 does not properly resist invalid message spam, such as an eclipse attack or a sybil attack.

01What is this vulnerability?

Gossipsub 1.0 does not properly resist invalid message spam, such as an eclipse attack or a sybil attack.

02Affected products

Vendor	Product	Versions
n	a / n/a	n/a

03Active exploitation status

Not currently listed on the CISA Known Exploited Vulnerabilities (KEV) catalog. EPSS is the best forward-looking signal — see the EPSS row above.

04Recommended remediation

• Patch to a fixed version listed in the vendor advisory (see references below).
• Mitigate with WAF rules, network egress filters, or feature flags where the patch is not yet available.
• Hunt historical logs for exploitation indicators — see Detection signatures below.

05Technical details

For the full vendor write-up, exploit chains, and reference implementations, see the references list in section 09.

06Detection signatures

Ask SARA in chat to draft a starting detection for this CVE in your stack of choice.

07Related CVEs

No directly-cited follow-up CVEs in the KB record for this advisory. The references list in section 09 carries the vendor cross-references.

08Timeline

• Published: 2020-07-07T19:18:43.000Z
• Last modified: 2024-08-04T12:04:22.908Z

09References

• github.com — https://github.com/libp2p/specs/tree/master/pubsub/gossipsub
• github.com — https://github.com/libp2p/specs/blob/master/pubsub/gossipsub/gossipsub-v1.1.md
• bitcoin.stackexchange.com — https://bitcoin.stackexchange.com/questions/61151/eclipse-attack-vs-sybil-attack
• github.com — https://github.com/ipfs/blog/pull/450
• gateway.ipfs.io — https://gateway.ipfs.io/ipfs/QmPWuNBs8h6a8KamRvGqhTq5UDYJRQsEEy37zDKjujQQQm/Goss…