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CVE PROGRAM SOURCE RECORD7.5 High

CVE-2023-35945

Envoy vulnerable to HTTP/2 memory leak in nghttp2 codec

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Status
Published
Published
Updated
Assigning organization
GitHub_M

Description

Envoy is a cloud-native high-performance edge/middle/service proxy. Envoy’s HTTP/2 codec may leak a header map and bookkeeping structures upon receiving `RST_STREAM` immediately followed by the `GOAWAY` frames from an upstream server. In nghttp2, cleanup of pending requests due to receipt of the `GOAWAY` frame skips de-allocation of the bookkeeping structure and pending compressed header. The error return [code path] is taken if connection is already marked for not sending more requests due to `GOAWAY` frame. The clean-up code is right after the return statement, causing memory leak. Denial of service through memory exhaustion. This vulnerability was patched in versions(s) 1.26.3, 1.25.8, 1.24.9, 1.23.11.

Affected products

Version statuses are supplied by the assigning organization. Consult the original record for detailed ranges and platform conditions.

envoyproxy envoy

  • >= 1.26.0, < 1.26.3affected
  • >= 1.25.0, < 1.25.8affected
  • >= 1.24.0, < 1.24.9affected
  • >= 1.23.0, < 1.23.11affected

References