CVE-2020-12821: Gossipsub 1.0 does not properly resist invalid message spam, such as an eclipse attack or a sybil attack

Critical severity · published Jul 7, 2020

CVE-2020-12821

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

9.8

CVSS

1.9%

EPSS

On KEV

Description

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

CVSS vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Attack vector

Network

Complexity

Low

Privileges

None

User interaction

None

Confidentiality

High

Integrity

High

Availability

High

Scope

Unchanged

Exploitation

Is it being used?

Exploit prediction (EPSS)1.9% · higher than 80% of CVEs

Exploited in the wildNo evidence yet

CISA KEVNot listed

Ransomware campaign useNot known

Affected products

Which versions

Gossipsub · Protocol

1.0 · source: NVD

Affected product

Gossipsub

Protocol

All Gossipsub CVEs

References

NVD

https://nvd.nist.gov/vuln/detail/CVE-2020-12821

CVE.org

https://www.cve.org/CVERecord?id=CVE-2020-12821

Third Party Advisory

https://bitcoin.stackexchange.com/questions/61151/eclipse-attack-vs-sybil-attack

Exploit

https://gateway.ipfs.io/ipfs/QmPWuNBs8h6a8KamRvGqhTq5UDYJRQsEEy37zDKjujQQQm/Gossipsub%20Evaluation%20Report.pdf

Patch

https://github.com/ipfs/blog/pull/450

Third Party Advisory

https://github.com/libp2p/specs/blob/master/pubsub/gossipsub/gossipsub-v1.1.md

Third Party Advisory

https://github.com/libp2p/specs/tree/master/pubsub/gossipsub