CVE-2021-39162
Incorrect handling of H2 GOAWAY + SETTINGS frames
Impact
Envoy, which Pomerium is based on, can abnormally terminate if an H/2 GOAWAY and SETTINGS frame are received in the same IO event. ### Impact This can lead to a DoS in the presence of untrusted *upstream* servers. ### Patches 0.15.1 contains an upgraded envoy binary with this vulnerability patched. ### Workarounds If only trusted upstreams are configured, there is not substantial risk of this condition being triggered. ### References [envoy GSA](https://github.com/envoyproxy/envoy/security/advisories/GHSA-j374-mjrw-vvp8) [envoy CVE](https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-32780) [envoy announcement](https://groups.google.com/g/envoy-announce/c/5xBpsEZZDfE/m/wD05NZBbAgAJ) ### For more information If you have any questions or comments about this advisory: * Open an issue in [pomerium/pomerium](https://github.com/pomerium/pomerium/issues) * Email us at [security@pomerium.com](mailto:security@pomerium.com)
Affected packages
| Ecosystem | Package | Affected | Fixed in |
|---|---|---|---|
| go | github.com/pomerium/pomerium | < 0.15.1 | 0.15.1 |
Affected products
| Vendor | Product | Affected versions |
|---|---|---|
| Envoyproxy | Envoy | before 1.18.4 Version 1.19.0 |
| Pomerium | Pomerium | Version 0.15.0 |
Weakness classification
References
- NVD record
- CVE.org record
- GitHub advisory
- https://github.com/envoyproxy/envoy/security/advisories/GHSA-j374-mjrw-vvp8
- https://github.com/pomerium/pomerium/security/advisories/GHSA-gjcg-vrxg-xmgv
- https://groups.google.com/g/envoy-announce/c/5xBpsEZZDfE/m/wD05NZBbAgAJ
- https://github.com/advisories/GHSA-gjcg-vrxg-xmgv
- https://nvd.nist.gov/vuln/detail/CVE-2021-39162