CVE-2022-2529
Cloudflare GoFlow vulnerable to a Denial of Service in the sflow packet handling package
Impact
### 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:netdev@cloudflare.com)
Affected packages
| Ecosystem | Package | Affected | Fixed in |
|---|---|---|---|
| go | github.com/cloudflare/goflow/v3 | < 3.4.4 | 3.4.4 |
Affected products
| Vendor | Product | Affected versions |
|---|---|---|
| Cloudflare | Goflow | before 3.4.4 |
Weakness classification
References
- NVD record
- CVE.org record
- GitHub advisory
- https://github.com/cloudflare/goflow/security/advisories/GHSA-9rpw-2h95-666c
- https://github.com/advisories/GHSA-9rpw-2h95-666c
- https://nvd.nist.gov/vuln/detail/CVE-2022-2529
- https://github.com/cloudflare/goflow/commit/2b94619a6204443e3ca1769f4e459f9f57039c51
- https://github.com/cloudflare/goflow/commit/c829ccd2c0aafdc9b886b20bf6f28095607f4998
- https://github.com/cloudflare/goflow/releases/tag/v3.4.4