GHSA-gjcg-vrxg-xmgv
Incorrect handling of H2 GOAWAY + SETTINGS frames
Packages
| Ecosystem | Package | Affected | Fixed in |
|---|---|---|---|
| Go | github.com/pomerium/pomerium | < 0.15.1 | 0.15.1 |
Details
As written in the advisory (Markdown source, shown as plain text).
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 [[email protected]](mailto:[email protected])
References
External links from the advisory. They lead to third-party sites.
- https://github.com/envoyproxy/envoy/security/advisories/GHSA-j374-mjrw-vvp8
- https://github.com/pomerium/pomerium/security/advisories/GHSA-gjcg-vrxg-xmgv
- https://nvd.nist.gov/vuln/detail/CVE-2021-39162
- https://github.com/pomerium/pomerium
- https://groups.google.com/g/envoy-announce/c/5xBpsEZZDfE/m/wD05NZBbAgAJ