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Vulnerability CVE-2023-35945
Published: 2023-07-13
| 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. |
Type:
CWE-400 (Uncontrolled Resource Consumption ('Resource Exhaustion'))
References: |
https://github.com/nghttp2/nghttp2/blob/e7f59406556c80904b81b593d38508591bb7523a/lib/nghttp2_session.c#L3346
https://github.com/envoyproxy/envoy/security/advisories/GHSA-jfxv-29pc-x22r
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