CVE-2023-35945

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.

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.

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.

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.

The framing layer of HTTP/2 is implemented as a form of reusable C library. On top of that, we have implemented HTTP/2 client, server and proxy. We have also developed load test and benchmarking tool for HTTP/2.

Security Fix(es):

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.(CVE-2023-35945)

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.

• SECURITY UPDATE: HTTP/2 memory leak in nghttp2 codec
  • debian/patches/CVE-2023-35945.patch: fix memory leak in nghttp2_session_mem_send_internal when stream close callback fails with a fatal error
  • CVE-2023-35945

• CVE-2023-35945: fix memory leak on RST_STREAM followed by GOAWAY
• CVE-2026-27135: fix iframe state validation to prevent assertion failure

• CVE-2023-35945: fix memory leak in nghttp2_session_mem_send_internal when on_stream_close_callback returns a fatal error during send-failure handling

• SECURITY UPDATE: denial of service via HTTP/2 stream reset flood (Rapid Reset)
  • debian/patches/CVE-2023-44487.patch: rate-limit incoming RST_STREAM on server sessions with a token bucket (burst 1000, 33 tokens per second) and send GOAWAY once it is exhausted, adding the nghttp2_ratelim and nghttp2_time modules and the clock_gettime / GetTickCount64 probes they need. Backported without upstream's new public option setter, so debian/libnghttp2-14.symbols is unchanged.
  • CVE-2023-44487

These are all security issues fixed in the libnghttp2-14-1.55.1-1.1 package on the GA media of openSUSE Tumbleweed.

This update for nghttp2 fixes the following issues:

• CVE-2023-35945: Fixed memory leak when PUSH_PROMISE or HEADERS frame cannot be sent (bsc#1215713).

This update for nghttp2 fixes the following issues:

• CVE-2023-35945: Fixed memory leak when PUSH_PROMISE or HEADERS frame cannot be sent (bsc#1215713).

This update for nghttp2 fixes the following issues:

• CVE-2023-35945: Fixed memory leak when PUSH_PROMISE or HEADERS frame cannot be sent (bsc#1215713).