Headline
GHSA-9wmc-rg4h-28wv: github.com/kumahq/kuma affected by CVE-2023-44487
Impact
Envoy and Go HTTP/2 protocol stack is vulnerable to the “Rapid Reset” class of exploits, which send a sequence of HEADERS frames optionally followed by RST_STREAM frames.
This can be exercised if you use the builtin gateway and receive untrusted http2 traffic.
Patches
https://github.com/kumahq/kuma/pull/8023 https://github.com/kumahq/kuma/pull/8001 https://github.com/kumahq/kuma/pull/8034
Workarounds
Disable http2 on the gateway listener with a MeshProxyPatch or ProxyTemplate.
References
https://github.com/advisories/GHSA-qppj-fm5r-hxr3 https://github.com/golang/go/issues/63417 https://github.com/envoyproxy/envoy/security/advisories/GHSA-jhv4-f7mr-xx76 https://cloud.google.com/blog/products/identity-security/how-it-works-the-novel-http2-rapid-reset-ddos-attack https://www.nginx.com/blog/http-2-rapid-reset-attack-impacting-f5-nginx-products/?sf269548684=1 https://www.envoyproxy.io/docs/envoy/latest/configuration/best_practices/edge
Package
gomod github.com/kumahq/kuma (Go)
Affected versions
>= 2.4.0, < 2.4.3
>= 2.3.0, < 2.3.3
>= 2.2.0, < 2.2.4
>= 2.1.0, < 2.1.8
< 2.0.8
Patched versions
2.4.3
2.3.3
2.2.4
2.1.8
2.0.8
Description
Impact
Envoy and Go HTTP/2 protocol stack is vulnerable to the “Rapid Reset” class of exploits, which send a sequence of HEADERS frames optionally followed by RST_STREAM frames.
This can be exercised if you use the builtin gateway and receive untrusted http2 traffic.
Patches
kumahq/kuma#8023
kumahq/kuma#8001
kumahq/kuma#8034
Workarounds
Disable http2 on the gateway listener with a MeshProxyPatch or ProxyTemplate.
References
GHSA-qppj-fm5r-hxr3
golang/go#63417
GHSA-jhv4-f7mr-xx76
https://cloud.google.com/blog/products/identity-security/how-it-works-the-novel-http2-rapid-reset-ddos-attack
https://www.nginx.com/blog/http-2-rapid-reset-attack-impacting-f5-nginx-products/?sf269548684=1
https://www.envoyproxy.io/docs/envoy/latest/configuration/best_practices/edge
References
- GHSA-9wmc-rg4h-28wv
- kumahq/kuma#8001
- kumahq/kuma#8023
- kumahq/kuma#8034
lahabana published to kumahq/kuma
Oct 12, 2023
Published to the GitHub Advisory Database
Oct 17, 2023
Reviewed
Oct 17, 2023