CVE-2022-2529
Cloudflare GoFlow vulnerable to a Denial of Service in the sflow packet handling package
Description
### Impact The sflow decode package prior to version 3.4.4 does not employ sufficient packet sanitisation which can lead to a denial of service attack. Attackers can craft malformed packets causing the process to consume huge amounts of memory resulting in a denial of service. ### Specific Go Packages Affected github.com/cloudflare/goflow/v3/decoders/sflow ### Patches Version 3.4.4 contains patches fixing this. ### Workarounds A possible workaround is to not have your goflow collector publicly reachable. ### For more information If you have any questions or comments about this advisory: * Open an issue in [goflow repo](https://github.com/cloudflare/goflow) * Email us [netdev[@]cloudflare.com ](mailto:[email protected])
How to fix CVE-2022-2529
To remediate CVE-2022-2529, upgrade the affected package to a fixed version below.
- —no fix listed
- —upgrade to 3.4.4 or later
- —upgrade to 3.4.4 or later
Is CVE-2022-2529 being exploited?
Low — EPSS is 0.6%, meaning exploitation activity has not been observed at scale.
Affected packages (3)
- from 0
- from 0, < 3.4.4
- from 0, < 3.4.4
CVSS scores
| Source | Version | Severity | Vector |
|---|---|---|---|
| osv | CVSS 3.1 | HIGH7.5 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H |