Incorrect handling of H2 GOAWAY + SETTINGS frames

高 8.6CVE-2021-39162 · BIT-envoy-2021-39162 · GHSA-gjcg-vrxg-xmgv · 09/09/2021 公開 · 17/06/2026 更新

要点

CVE-2021-39162 は github.com/pomerium/pomerium, envoy (envoyproxy), pomerium (pomerium) に影響する深刻度「高」 (CVSS 8.6) の脆弱性です。
今後30日間に悪用される確率（EPSS）：1.6%（全脆弱性の 76.3% より高い）。
対処：0.15.1, 1.18.4 以降に更新してください。

パッケージ	影響を受けるバージョン	修正済みバージョン
github.com/pomerium/pomerium Go	`< 0.15.1`	`0.15.1`
envoy envoyproxy	`= 1.19.0< 1.18.4`	`1.18.4`
pomerium pomerium	`= 0.15.0`	修正版なし

概要

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 envoy CVE envoy announcement

For more information

If you have any questions or comments about this advisory:

Open an issue in pomerium/pomerium
Email us at [email protected]

NVD の説明

Pomerium is an open source identity-aware access proxy. Envoy, which Pomerium is based on, can abnormally terminate if an H/2 GOAWAY and SETTINGS frame are received in the same IO event. This can lead to a DoS in the presence of untrusted *upstream* servers. 0.15.1 contains an upgraded envoy binary with this vulnerability patched. If only trusted upstreams are configured, there is not substantial risk of this condition being triggered.