| Package | Affected versions | Patched versions |
|---|---|---|
| github.com/cloudflare/goflow | all versions | |
| github.com/cloudflare/goflow/v3 | < 3.4.4 | 3.4.4 |
| goflow | < 3.4.4 | 3.4.4 |
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.
github.com/cloudflare/goflow/v3/decoders/sflow
Version 3.4.4 contains patches fixing this.
A possible workaround is to not have your goflow collector publicly reachable.
If you have any questions or comments about this advisory:
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