Unrated severityNVD Advisory· Published Feb 22, 2022· Updated Apr 23, 2025
Crash when tunneling TCP over HTTP in Envoy
CVE-2021-43826
Description
Envoy is an open source edge and service proxy, designed for cloud-native applications. In affected versions of Envoy a crash occurs when configured for :ref:upstream tunneling <envoy_v3_api_field_extensions.filters.network.tcp_proxy.v3.TcpProxy.tunneling_config> and the downstream connection disconnects while the the upstream connection or http/2 stream is still being established. There are no workarounds for this issue. Users are advised to upgrade.
AI Insight
LLM-synthesized narrative grounded in this CVE's description and references.
Affected products
3(expand)+ 1 more
- (no CPE)
- (no CPE)range: < 1.18.6
Patches
Vulnerability mechanics
References
2- github.com/envoyproxy/envoy/commit/ce0ae309057a216aba031aff81c445c90c6ef145mitrex_refsource_MISC
- github.com/envoyproxy/envoy/security/advisories/GHSA-cmx3-fvgf-83mfmitrex_refsource_CONFIRM
News mentions
0No linked articles in our index yet.