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      <title>CVE-2021-43826 — Crash when tunneling TCP over HTTP in Envoy</title>
      <link>https://cve.radiocsirt.org/vuln/cve-2021-43826</link>
      <description>&lt;p&gt;&lt;strong&gt;Affected:&lt;/strong&gt; envoyproxy envoy&lt;/p&gt;
&lt;p&gt;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 &amp;lt;envoy_v3_api_field_extensions.filters.network.tcp_proxy.v3.TcpProxy.tunneling_config&amp;gt;` 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.&lt;/p&gt;</description>
      <content:encoded>&lt;p&gt;&lt;strong&gt;Affected:&lt;/strong&gt; envoyproxy envoy&lt;/p&gt;
&lt;p&gt;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 &amp;lt;envoy_v3_api_field_extensions.filters.network.tcp_proxy.v3.TcpProxy.tunneling_config&amp;gt;` 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.&lt;/p&gt;</content:encoded>
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