Описание
Cloudflare GoFlow vulnerable to a Denial of Service in the sflow packet handling package
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
- Email us netdev[@]cloudflare.com
Ссылки
- https://github.com/cloudflare/goflow/security/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
Пакеты
github.com/cloudflare/goflow/v3
< 3.4.4
3.4.4
Связанные уязвимости
sflow decode package 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 large amounts of memory resulting in a denial of service.