nghttp2: fix CVE-2023-44487

The HTTP/2 protocol allows a denial of service (server resource consumption)
because request cancellation can reset many streams quickly, as exploited in
the wild in August through October 2023.

References:
https://nvd.nist.gov/vuln/detail/CVE-2023-44487
https://github.com/nghttp2/nghttp2/commit/72b4af6143681f528f1d237b21a9a7aee1738832

Signed-off-by: Zahir Hussain <zahir.basha@kpit.com>
Signed-off-by: Steve Sakoman <steve@sakoman.com>

2 files changed, 928 insertions, 0 deletions

diff --git a/meta/recipes-support/nghttp2/nghttp2/CVE-2023-44487.patch b/meta/recipes-support/nghttp2/nghttp2/CVE-2023-44487.patch
new file mode 100644
index 0000000000..3cba83307c
--- /dev/null
+++ b/meta/recipes-support/nghttp2/nghttp2/CVE-2023-44487.patch
@@ -0,0 +1,927 @@
+From 72b4af6143681f528f1d237b21a9a7aee1738832 Mon Sep 17 00:00:00 2001
+From: Tatsuhiro Tsujikawa <tatsuhiro.t@gmail.com>
+Date: Sun, 1 Oct 2023 00:05:01 +0900
+Subject: [PATCH] Rework session management
+
+CVE: CVE-2023-44487
+
+Upstream-Status: Backport [https://github.com/nghttp2/nghttp2/commit/72b4af6143681f528f1d237b21a9a7aee1738832]
+
+Signed-off-by: Zahir Hussain zahir.basha@kpit.com
+Signed-off-by: aszh07 <mail2szahir@gmail.com>
+---
+CMakeLists.txt                 |   4 ++
+cmakeconfig.h.in               |   9 +++
+configure.ac                   |  21 +++++++
+doc/Makefile.am                |   1 +
+lib/CMakeLists.txt             |   2 +
+lib/Makefile.am                |   4 ++
+lib/includes/nghttp2/nghttp2.h |  17 ++++++
+lib/nghttp2_option.c           |   7 +++
+lib/nghttp2_ratelim.c          |  75 ++++++++++++++++++++++++
+lib/nghttp2_ratelim.h          |  57 ++++++++++++++++++
+lib/nghttp2_session.c          |  34 ++++++++++-
+lib/nghttp2_session.h          |  12 +++-
+lib/nghttp2_time.c             |  62 ++++++++++++++++++++
+lib/nghttp2_time.h             |  38 ++++++++++++
+tests/nghttp2_ratelim_test.c   | 101 ++++++++++++++++++++++++++++++++
+tests/nghttp2_ratelim_test.h   |  35 +++++++++++
+tests/nghttp2_session_test.c   | 103 +++++++++++++++++++++++++++++++++
+tests/nghttp2_session_test.h   |   1 +
+tests/CMakeLists.txt           |   1 +
+tests/Makefile.am              |   6 +-
+lib/nghttp2_option.h           |   6 ++
+tests/main.c                   |   7 ++-
+22 files changed, 598 insertions(+), 5 deletions(-)
+create mode 100644 lib/nghttp2_ratelim.c
+create mode 100644 lib/nghttp2_ratelim.h
+create mode 100644 lib/nghttp2_time.c
+create mode 100644 lib/nghttp2_time.h
+create mode 100644 tests/nghttp2_ratelim_test.c
+create mode 100644 tests/nghttp2_ratelim_test.h
+
+--- a/CMakeLists.txt
++++ b/CMakeLists.txt
+@@ -262,6 +262,7 @@ check_include_file("netinet/in.h"   HAVE
+ check_include_file("pwd.h"          HAVE_PWD_H)
+ check_include_file("sys/socket.h"   HAVE_SYS_SOCKET_H)
+ check_include_file("sys/time.h"     HAVE_SYS_TIME_H)
++check_include_file("sysinfoapi.h"   HAVE_SYSINFOAPI_H)
+ check_include_file("syslog.h"       HAVE_SYSLOG_H)
+ check_include_file("time.h"         HAVE_TIME_H)
+ check_include_file("unistd.h"       HAVE_UNISTD_H)
+@@ -302,8 +303,11 @@ check_type_size("time_t"  SIZEOF_TIME_T)
+ include(CheckFunctionExists)
+ check_function_exists(_Exit     HAVE__EXIT)
+ check_function_exists(accept4   HAVE_ACCEPT4)
++check_function_exists(clock_gettime HAVE_CLOCK_GETTIME)
+ check_function_exists(mkostemp  HAVE_MKOSTEMP)
+ 
++check_symbol_exists(GetTickCount64 sysinfoapi.h HAVE_GETTICKCOUNT64)
++
+ include(CheckSymbolExists)
+ # XXX does this correctly detect initgroups (un)availability on cygwin?
+ check_symbol_exists(initgroups grp.h HAVE_DECL_INITGROUPS)
+--- a/cmakeconfig.h.in
++++ b/cmakeconfig.h.in
+@@ -34,9 +34,15 @@
+ /* Define to 1 if you have the `accept4` function. */
+ #cmakedefine HAVE_ACCEPT4 1
+ 
++/* Define to 1 if you have the `clock_gettime` function. */
++#cmakedefine HAVE_CLOCK_GETTIME 1
++
+ /* Define to 1 if you have the `mkostemp` function. */
+ #cmakedefine HAVE_MKOSTEMP 1
+ 
++/* Define to 1 if you have the `GetTickCount64` function. */
++#cmakedefine HAVE_GETTICKCOUNT64 1
++
+ /* Define to 1 if you have the `initgroups` function. */
+ #cmakedefine01 HAVE_DECL_INITGROUPS
+ 
+@@ -73,6 +79,9 @@
+ /* Define to 1 if you have the <sys/time.h> header file. */
+ #cmakedefine HAVE_SYS_TIME_H 1
+ 
++/* Define to 1 if you have the <sysinfoapi.h> header file. */
++#cmakedefine HAVE_SYSINFOAPI_H 1
++
+ /* Define to 1 if you have the <syslog.h> header file. */
+ #cmakedefine HAVE_SYSLOG_H 1
+ 
+--- a/configure.ac
++++ b/configure.ac
+@@ -607,6 +607,7 @@ AC_CHECK_HEADERS([ \
+   string.h \
+   sys/socket.h \
+   sys/time.h \
++  sysinfoapi.h \
+   syslog.h \
+   time.h \
+   unistd.h \
+@@ -681,6 +682,7 @@ AC_FUNC_STRNLEN
+ AC_CHECK_FUNCS([ \
+   _Exit \
+   accept4 \
++  clock_gettime \
+   dup2 \
+   getcwd \
+   getpwnam \
+@@ -706,6 +708,25 @@ AC_CHECK_FUNCS([ \
+ AC_CHECK_FUNC([timerfd_create],
+               [have_timerfd_create=yes], [have_timerfd_create=no])
+ 
++AC_MSG_CHECKING([checking for GetTickCount64])
++AC_LINK_IFELSE([AC_LANG_PROGRAM(
++[[
++#include <sysinfoapi.h>
++]],
++[[
++GetTickCount64();
++]])],
++[have_gettickcount64=yes],
++[have_gettickcount64=no])
++
++if test "x${have_gettickcount64}" = "xyes"; then
++  AC_MSG_RESULT([yes])
++  AC_DEFINE([HAVE_GETTICKCOUNT64], [1],
++            [Define to 1 if you have `GetTickCount64` function.])
++else
++  AC_MSG_RESULT([no])
++fi
++
+ # For cygwin: we can link initgroups, so AC_CHECK_FUNCS succeeds, but
+ # cygwin disables initgroups due to feature test macro magic with our
+ # configuration.  FreeBSD declares initgroups() in unistd.h.
+--- a/doc/Makefile.am
++++ b/doc/Makefile.am
+@@ -69,6 +69,7 @@ APIDOCS= \
+ 	nghttp2_option_set_user_recv_extension_type.rst \
+ 	nghttp2_option_set_max_outbound_ack.rst \
+ 	nghttp2_option_set_max_settings.rst \
++	nghttp2_option_set_stream_reset_rate_limit.rst \
+ 	nghttp2_pack_settings_payload.rst \
+ 	nghttp2_priority_spec_check_default.rst \
+ 	nghttp2_priority_spec_default_init.rst \
+--- a/lib/CMakeLists.txt
++++ b/lib/CMakeLists.txt
+@@ -23,6 +23,8 @@ set(NGHTTP2_SOURCES
+   nghttp2_mem.c
+   nghttp2_http.c
+   nghttp2_rcbuf.c
++  nghttp2_ratelim.c
++  nghttp2_time.c
+   nghttp2_debug.c
+ )
+ 
+--- a/lib/Makefile.am
++++ b/lib/Makefile.am
+@@ -49,6 +49,8 @@ OBJECTS = nghttp2_pq.c nghttp2_map.c ngh
+ 	nghttp2_mem.c \
+ 	nghttp2_http.c \
+ 	nghttp2_rcbuf.c \
++	nghttp2_ratelim.c \
++	nghttp2_time.c \
+ 	nghttp2_debug.c
+ 
+ HFILES = nghttp2_pq.h nghttp2_int.h nghttp2_map.h nghttp2_queue.h \
+@@ -65,6 +67,8 @@ HFILES = nghttp2_pq.h nghttp2_int.h nght
+ 	nghttp2_mem.h \
+ 	nghttp2_http.h \
+ 	nghttp2_rcbuf.h \
++	nghttp2_ratelim.h \
++	nghttp2_time.h \
+ 	nghttp2_debug.h
+ 
+ libnghttp2_la_SOURCES = $(HFILES) $(OBJECTS)
+--- a/lib/includes/nghttp2/nghttp2.h
++++ b/lib/includes/nghttp2/nghttp2.h
+@@ -2763,6 +2763,23 @@ nghttp2_session_client_new2(nghttp2_sess
+ /**
+  * @function
+  *
++ * This function sets the rate limit for the incoming stream reset
++ * (RST_STREAM frame).  It is server use only.  It is a token-bucket
++ * based rate limiter.  |burst| specifies the number of tokens that is
++ * initially available.  The maximum number of tokens is capped to
++ * this value.  |rate| specifies the number of tokens that are
++ * regenerated per second.  An incoming RST_STREAM consumes one token.
++ * If there is no token available, GOAWAY is sent to tear down the
++ * connection.  |burst| and |rate| default to 1000 and 33
++ * respectively.
++ */
++NGHTTP2_EXTERN void
++nghttp2_option_set_stream_reset_rate_limit(nghttp2_option *option,
++                                           uint64_t burst, uint64_t rate);
++
++/**
++ * @function
++ *
+  * Like `nghttp2_session_server_new()`, but with additional options
+  * specified in the |option|.
+  *
+--- a/lib/nghttp2_option.c
++++ b/lib/nghttp2_option.c
+@@ -126,3 +126,10 @@ void nghttp2_option_set_max_settings(ngh
+   option->opt_set_mask |= NGHTTP2_OPT_MAX_SETTINGS;
+   option->max_settings = val;
+ }
++
++void nghttp2_option_set_stream_reset_rate_limit(nghttp2_option *option,
++                                                uint64_t burst, uint64_t rate) {
++  option->opt_set_mask |= NGHTTP2_OPT_STREAM_RESET_RATE_LIMIT;
++  option->stream_reset_burst = burst;
++  option->stream_reset_rate = rate;
++}
+--- /dev/null
++++ b/lib/nghttp2_ratelim.c
+@@ -0,0 +1,75 @@
++/*
++ * nghttp2 - HTTP/2 C Library
++ *
++ * Copyright (c) 2023 nghttp2 contributors
++ *
++ * Permission is hereby granted, free of charge, to any person obtaining
++ * a copy of this software and associated documentation files (the
++ * "Software"), to deal in the Software without restriction, including
++ * without limitation the rights to use, copy, modify, merge, publish,
++ * distribute, sublicense, and/or sell copies of the Software, and to
++ * permit persons to whom the Software is furnished to do so, subject to
++ * the following conditions:
++ *
++ * The above copyright notice and this permission notice shall be
++ * included in all copies or substantial portions of the Software.
++ *
++ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
++ * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
++ * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
++ * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
++ * LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
++ * OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
++ * WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
++ */
++#include "nghttp2_ratelim.h"
++#include "nghttp2_helper.h"
++
++void nghttp2_ratelim_init(nghttp2_ratelim *rl, uint64_t burst, uint64_t rate) {
++  rl->val = rl->burst = burst;
++  rl->rate = rate;
++  rl->tstamp = 0;
++}
++
++void nghttp2_ratelim_update(nghttp2_ratelim *rl, uint64_t tstamp) {
++  uint64_t d, gain;
++
++  if (tstamp == rl->tstamp) {
++    return;
++  }
++
++  if (tstamp > rl->tstamp) {
++    d = tstamp - rl->tstamp;
++  } else {
++    d = 1;
++  }
++
++  rl->tstamp = tstamp;
++
++  if (UINT64_MAX / d < rl->rate) {
++    rl->val = rl->burst;
++
++    return;
++  }
++
++  gain = rl->rate * d;
++
++  if (UINT64_MAX - gain < rl->val) {
++    rl->val = rl->burst;
++
++    return;
++  }
++
++  rl->val += gain;
++  rl->val = nghttp2_min(rl->val, rl->burst);
++}
++
++int nghttp2_ratelim_drain(nghttp2_ratelim *rl, uint64_t n) {
++  if (rl->val < n) {
++    return -1;
++  }
++
++  rl->val -= n;
++
++  return 0;
++}
+--- /dev/null
++++ b/lib/nghttp2_ratelim.h
+@@ -0,0 +1,57 @@
++/*
++ * nghttp2 - HTTP/2 C Library
++ *
++ * Copyright (c) 2023 nghttp2 contributors
++ *
++ * Permission is hereby granted, free of charge, to any person obtaining
++ * a copy of this software and associated documentation files (the
++ * "Software"), to deal in the Software without restriction, including
++ * without limitation the rights to use, copy, modify, merge, publish,
++ * distribute, sublicense, and/or sell copies of the Software, and to
++ * permit persons to whom the Software is furnished to do so, subject to
++ * the following conditions:
++ *
++ * The above copyright notice and this permission notice shall be
++ * included in all copies or substantial portions of the Software.
++ *
++ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
++ * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
++ * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
++ * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
++ * LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
++ * OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
++ * WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
++ */
++#ifndef NGHTTP2_RATELIM_H
++#define NGHTTP2_RATELIM_H
++
++#ifdef HAVE_CONFIG_H
++#  include <config.h>
++#endif /* HAVE_CONFIG_H */
++
++#include <nghttp2/nghttp2.h>
++
++typedef struct nghttp2_ratelim {
++  /* burst is the maximum value of val. */
++  uint64_t burst;
++  /* rate is the amount of value that is regenerated per 1 tstamp. */
++  uint64_t rate;
++  /* val is the amount of value available to drain. */
++  uint64_t val;
++  /* tstamp is the last timestamp in second resolution that is known
++     to this object. */
++  uint64_t tstamp;
++} nghttp2_ratelim;
++
++/* nghttp2_ratelim_init initializes |rl| with the given parameters. */
++void nghttp2_ratelim_init(nghttp2_ratelim *rl, uint64_t burst, uint64_t rate);
++
++/* nghttp2_ratelim_update updates rl->val with the current |tstamp|
++   given in second resolution. */
++void nghttp2_ratelim_update(nghttp2_ratelim *rl, uint64_t tstamp);
++
++/* nghttp2_ratelim_drain drains |n| from rl->val.  It returns 0 if it
++   succeeds, or -1. */
++int nghttp2_ratelim_drain(nghttp2_ratelim *rl, uint64_t n);
++
++#endif /* NGHTTP2_RATELIM_H */
+--- a/lib/nghttp2_session.c
++++ b/lib/nghttp2_session.c
+@@ -36,6 +36,7 @@
+ #include "nghttp2_option.h"
+ #include "nghttp2_http.h"
+ #include "nghttp2_pq.h"
++#include "nghttp2_time.h"
+ #include "nghttp2_debug.h"
+ 
+ /*
+@@ -443,6 +444,10 @@ static int session_new(nghttp2_session *
+       NGHTTP2_DEFAULT_MAX_CONCURRENT_STREAMS;
+   (*session_ptr)->pending_enable_push = 1;
+ 
++  nghttp2_ratelim_init(&(*session_ptr)->stream_reset_ratelim,
++                       NGHTTP2_DEFAULT_STREAM_RESET_BURST,
++                       NGHTTP2_DEFAULT_STREAM_RESET_RATE);
++
+   if (server) {
+     (*session_ptr)->server = 1;
+   }
+@@ -527,6 +532,12 @@ static int session_new(nghttp2_session *
+         option->max_settings) {
+       (*session_ptr)->max_settings = option->max_settings;
+     }
++
++    if (option->opt_set_mask & NGHTTP2_OPT_STREAM_RESET_RATE_LIMIT) {
++      nghttp2_ratelim_init(&(*session_ptr)->stream_reset_ratelim,
++                           option->stream_reset_burst,
++                           option->stream_reset_rate);
++    }
+   }
+ 
+   rv = nghttp2_hd_deflate_init2(&(*session_ptr)->hd_deflater,
+@@ -4144,6 +4155,23 @@ static int session_process_priority_fram
+   return nghttp2_session_on_priority_received(session, frame);
+ }
+ 
++static int session_update_stream_reset_ratelim(nghttp2_session *session) {
++  if (!session->server || (session->goaway_flags & NGHTTP2_GOAWAY_SUBMITTED)) {
++    return 0;
++  }
++
++  nghttp2_ratelim_update(&session->stream_reset_ratelim,
++                         nghttp2_time_now_sec());
++
++  if (nghttp2_ratelim_drain(&session->stream_reset_ratelim, 1) == 0) {
++    return 0;
++  }
++
++  return nghttp2_session_add_goaway(session, session->last_recv_stream_id,
++                                    NGHTTP2_INTERNAL_ERROR, NULL, 0,
++                                    NGHTTP2_GOAWAY_AUX_NONE);
++}
++
+ int nghttp2_session_on_rst_stream_received(nghttp2_session *session,
+                                            nghttp2_frame *frame) {
+   int rv;
+@@ -4173,7 +4201,8 @@ int nghttp2_session_on_rst_stream_receiv
+   if (nghttp2_is_fatal(rv)) {
+     return rv;
+   }
+-  return 0;
++
++  return session_update_stream_reset_ratelim(session);
+ }
+ 
+ static int session_process_rst_stream_frame(nghttp2_session *session) {
+@@ -6965,6 +6994,9 @@ int nghttp2_session_add_goaway(nghttp2_s
+     nghttp2_mem_free(mem, item);
+     return rv;
+   }
++
++  session->goaway_flags |= NGHTTP2_GOAWAY_SUBMITTED;
++
+   return 0;
+ }
+ 
+--- a/lib/nghttp2_session.h
++++ b/lib/nghttp2_session.h
+@@ -39,6 +39,7 @@
+ #include "nghttp2_buf.h"
+ #include "nghttp2_callbacks.h"
+ #include "nghttp2_mem.h"
++#include "nghttp2_ratelim.h"
+ 
+ /* The global variable for tests where we want to disable strict
+    preface handling. */
+@@ -102,6 +103,10 @@ typedef struct {
+ /* The default value of maximum number of concurrent streams. */
+ #define NGHTTP2_DEFAULT_MAX_CONCURRENT_STREAMS 0xffffffffu
+ 
++/* The default values for stream reset rate limiter. */
++#define NGHTTP2_DEFAULT_STREAM_RESET_BURST 1000
++#define NGHTTP2_DEFAULT_STREAM_RESET_RATE 33
++
+ /* Internal state when receiving incoming frame */
+ typedef enum {
+   /* Receiving frame header */
+@@ -176,7 +181,9 @@ typedef enum {
+   /* Flag means GOAWAY was sent */
+   NGHTTP2_GOAWAY_SENT = 0x4,
+   /* Flag means GOAWAY was received */
+-  NGHTTP2_GOAWAY_RECV = 0x8
++  NGHTTP2_GOAWAY_RECV = 0x8,
++  /* Flag means GOAWAY has been submitted at least once */
++  NGHTTP2_GOAWAY_SUBMITTED = 0x10
+ } nghttp2_goaway_flag;
+ 
+ /* nghttp2_inflight_settings stores the SETTINGS entries which local
+@@ -230,6 +237,9 @@ struct nghttp2_session {
+   /* Queue of In-flight SETTINGS values.  SETTINGS bearing ACK is not
+      considered as in-flight. */
+   nghttp2_inflight_settings *inflight_settings_head;
++  /* Stream reset rate limiter.  If receiving excessive amount of
++     stream resets, GOAWAY will be sent. */
++  nghttp2_ratelim stream_reset_ratelim;
+   /* The number of outgoing streams. This will be capped by
+      remote_settings.max_concurrent_streams. */
+   size_t num_outgoing_streams;
+--- /dev/null
++++ b/lib/nghttp2_time.c
+@@ -0,0 +1,62 @@
++/*
++ * nghttp2 - HTTP/2 C Library
++ *
++ * Copyright (c) 2023 nghttp2 contributors
++ *
++ * Permission is hereby granted, free of charge, to any person obtaining
++ * a copy of this software and associated documentation files (the
++ * "Software"), to deal in the Software without restriction, including
++ * without limitation the rights to use, copy, modify, merge, publish,
++ * distribute, sublicense, and/or sell copies of the Software, and to
++ * permit persons to whom the Software is furnished to do so, subject to
++ * the following conditions:
++ *
++ * The above copyright notice and this permission notice shall be
++ * included in all copies or substantial portions of the Software.
++ *
++ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
++ * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
++ * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
++ * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
++ * LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
++ * OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
++ * WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
++ */
++#include "nghttp2_time.h"
++
++#ifdef HAVE_TIME_H
++#  include <time.h>
++#endif /* HAVE_TIME_H */
++
++#ifdef HAVE_SYSINFOAPI_H
++#  include <sysinfoapi.h>
++#endif /* HAVE_SYSINFOAPI_H */
++
++#ifndef HAVE_GETTICKCOUNT64
++static uint64_t time_now_sec(void) {
++  time_t t = time(NULL);
++
++  if (t == -1) {
++    return 0;
++  }
++
++  return (uint64_t)t;
++}
++#endif /* HAVE_GETTICKCOUNT64 */
++
++#ifdef HAVE_CLOCK_GETTIME
++uint64_t nghttp2_time_now_sec(void) {
++  struct timespec tp;
++  int rv = clock_gettime(CLOCK_MONOTONIC, &tp);
++
++  if (rv == -1) {
++    return time_now_sec();
++  }
++
++  return (uint64_t)tp.tv_sec;
++}
++#elif defined(HAVE_GETTICKCOUNT64)
++uint64_t nghttp2_time_now_sec(void) { return GetTickCount64() / 1000; }
++#else  /* !HAVE_CLOCK_GETTIME && !HAVE_GETTICKCOUNT64 */
++uint64_t nghttp2_time_now_sec(void) { return time_now_sec(); }
++#endif /* !HAVE_CLOCK_GETTIME && !HAVE_GETTICKCOUNT64 */
+--- /dev/null
++++ b/lib/nghttp2_time.h
+@@ -0,0 +1,38 @@
++/*
++ * nghttp2 - HTTP/2 C Library
++ *
++ * Copyright (c) 2023 nghttp2 contributors
++ *
++ * Permission is hereby granted, free of charge, to any person obtaining
++ * a copy of this software and associated documentation files (the
++ * "Software"), to deal in the Software without restriction, including
++ * without limitation the rights to use, copy, modify, merge, publish,
++ * distribute, sublicense, and/or sell copies of the Software, and to
++ * permit persons to whom the Software is furnished to do so, subject to
++ * the following conditions:
++ *
++ * The above copyright notice and this permission notice shall be
++ * included in all copies or substantial portions of the Software.
++ *
++ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
++ * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
++ * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
++ * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
++ * LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
++ * OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
++ * WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
++ */
++#ifndef NGHTTP2_TIME_H
++#define NGHTTP2_TIME_H
++
++#ifdef HAVE_CONFIG_H
++#  include <config.h>
++#endif /* HAVE_CONFIG_H */
++
++#include <nghttp2/nghttp2.h>
++
++/* nghttp2_time_now_sec returns seconds from implementation-specific
++   timepoint.  If it is unable to get seconds, it returns 0. */
++uint64_t nghttp2_time_now_sec(void);
++
++#endif /* NGHTTP2_TIME_H */
+--- /dev/null
++++ b/tests/nghttp2_ratelim_test.c
+@@ -0,0 +1,101 @@
++/*
++ * nghttp2 - HTTP/2 C Library
++ *
++ * Copyright (c) 2023 nghttp2 contributors
++ *
++ * Permission is hereby granted, free of charge, to any person obtaining
++ * a copy of this software and associated documentation files (the
++ * "Software"), to deal in the Software without restriction, including
++ * without limitation the rights to use, copy, modify, merge, publish,
++ * distribute, sublicense, and/or sell copies of the Software, and to
++ * permit persons to whom the Software is furnished to do so, subject to
++ * the following conditions:
++ *
++ * The above copyright notice and this permission notice shall be
++ * included in all copies or substantial portions of the Software.
++ *
++ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
++ * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
++ * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
++ * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
++ * LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
++ * OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
++ * WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
++ */
++#include "nghttp2_ratelim_test.h"
++
++#include <stdio.h>
++
++#include <CUnit/CUnit.h>
++
++#include "nghttp2_ratelim.h"
++
++void test_nghttp2_ratelim_update(void) {
++  nghttp2_ratelim rl;
++
++  nghttp2_ratelim_init(&rl, 1000, 21);
++
++  CU_ASSERT(1000 == rl.val);
++  CU_ASSERT(1000 == rl.burst);
++  CU_ASSERT(21 == rl.rate);
++  CU_ASSERT(0 == rl.tstamp);
++
++  nghttp2_ratelim_update(&rl, 999);
++
++  CU_ASSERT(1000 == rl.val);
++  CU_ASSERT(999 == rl.tstamp);
++
++  nghttp2_ratelim_drain(&rl, 100);
++
++  CU_ASSERT(900 == rl.val);
++
++  nghttp2_ratelim_update(&rl, 1000);
++
++  CU_ASSERT(921 == rl.val);
++
++  nghttp2_ratelim_update(&rl, 1002);
++
++  CU_ASSERT(963 == rl.val);
++
++  nghttp2_ratelim_update(&rl, 1004);
++
++  CU_ASSERT(1000 == rl.val);
++  CU_ASSERT(1004 == rl.tstamp);
++
++  /* timer skew */
++  nghttp2_ratelim_init(&rl, 1000, 21);
++  nghttp2_ratelim_update(&rl, 1);
++
++  CU_ASSERT(1000 == rl.val);
++
++  nghttp2_ratelim_update(&rl, 0);
++
++  CU_ASSERT(1000 == rl.val);
++
++  /* rate * duration overflow */
++  nghttp2_ratelim_init(&rl, 1000, 100);
++  nghttp2_ratelim_drain(&rl, 999);
++
++  CU_ASSERT(1 == rl.val);
++
++  nghttp2_ratelim_update(&rl, UINT64_MAX);
++
++  CU_ASSERT(1000 == rl.val);
++
++  /* val + rate * duration overflow */
++  nghttp2_ratelim_init(&rl, UINT64_MAX - 1, 2);
++  nghttp2_ratelim_update(&rl, 1);
++
++  CU_ASSERT(UINT64_MAX - 1 == rl.val);
++}
++
++void test_nghttp2_ratelim_drain(void) {
++  nghttp2_ratelim rl;
++
++  nghttp2_ratelim_init(&rl, 100, 7);
++
++  CU_ASSERT(-1 == nghttp2_ratelim_drain(&rl, 101));
++  CU_ASSERT(0 == nghttp2_ratelim_drain(&rl, 51));
++  CU_ASSERT(0 == nghttp2_ratelim_drain(&rl, 49));
++  CU_ASSERT(-1 == nghttp2_ratelim_drain(&rl, 1));
++}
+--- /dev/null
++++ b/tests/nghttp2_ratelim_test.h
+@@ -0,0 +1,35 @@
++/*
++ * nghttp2 - HTTP/2 C Library
++ *
++ * Copyright (c) 2023 nghttp2 contributors
++ *
++ * Permission is hereby granted, free of charge, to any person obtaining
++ * a copy of this software and associated documentation files (the
++ * "Software"), to deal in the Software without restriction, including
++ * without limitation the rights to use, copy, modify, merge, publish,
++ * distribute, sublicense, and/or sell copies of the Software, and to
++ * permit persons to whom the Software is furnished to do so, subject to
++ * the following conditions:
++ *
++ * The above copyright notice and this permission notice shall be
++ * included in all copies or substantial portions of the Software.
++ *
++ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
++ * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
++ * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
++ * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
++ * LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
++ * OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
++ * WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
++ */
++#ifndef NGHTTP2_RATELIM_TEST_H
++#define NGHTTP2_RATELIM_TEST_H
++
++#ifdef HAVE_CONFIG_H
++#  include <config.h>
++#endif /* HAVE_CONFIG_H */
++
++void test_nghttp2_ratelim_update(void);
++void test_nghttp2_ratelim_drain(void);
++
++#endif /* NGHTTP2_RATELIM_TEST_H */
+--- a/tests/nghttp2_session_test.c
++++ b/tests/nghttp2_session_test.c
+@@ -10813,6 +10813,109 @@ void test_nghttp2_session_set_stream_use
+   nghttp2_session_del(session);
+ }
+ 
++void test_nghttp2_session_stream_reset_ratelim(void) {
++  nghttp2_session *session;
++  nghttp2_session_callbacks callbacks;
++  nghttp2_frame frame;
++  ssize_t rv;
++  nghttp2_bufs bufs;
++  nghttp2_buf *buf;
++  nghttp2_mem *mem;
++  size_t i;
++  nghttp2_hd_deflater deflater;
++  size_t nvlen;
++  nghttp2_nv *nva;
++  int32_t stream_id;
++  nghttp2_outbound_item *item;
++  nghttp2_option *option;
++
++  mem = nghttp2_mem_default();
++  frame_pack_bufs_init(&bufs);
++
++  memset(&callbacks, 0, sizeof(nghttp2_session_callbacks));
++  callbacks.send_callback = null_send_callback;
++
++  nghttp2_option_new(&option);
++  nghttp2_option_set_stream_reset_rate_limit(
++      option, NGHTTP2_DEFAULT_STREAM_RESET_BURST, 0);
++
++  nghttp2_session_server_new2(&session, &callbacks, NULL, option);
++
++  nghttp2_frame_settings_init(&frame.settings, NGHTTP2_FLAG_NONE, NULL, 0);
++  rv = nghttp2_frame_pack_settings(&bufs, &frame.settings);
++
++  CU_ASSERT(0 == rv);
++
++  nghttp2_frame_settings_free(&frame.settings, mem);
++
++  buf = &bufs.head->buf;
++  rv = nghttp2_session_mem_recv(session, buf->pos, nghttp2_buf_len(buf));
++
++  CU_ASSERT((ssize_t)nghttp2_buf_len(buf) == rv);
++
++  /* Send SETTINGS ACK */
++  rv = nghttp2_session_send(session);
++
++  CU_ASSERT(0 == rv);
++
++  nghttp2_hd_deflate_init(&deflater, mem);
++
++  for (i = 0; i < NGHTTP2_DEFAULT_STREAM_RESET_BURST + 2; ++i) {
++    stream_id = (int32_t)(i * 2 + 1);
++
++    nghttp2_bufs_reset(&bufs);
++
++    /* HEADERS */
++    nvlen = ARRLEN(reqnv);
++    nghttp2_nv_array_copy(&nva, reqnv, nvlen, mem);
++    nghttp2_frame_headers_init(&frame.headers, NGHTTP2_FLAG_END_HEADERS,
++                               stream_id, NGHTTP2_HCAT_HEADERS, NULL, nva,
++                               nvlen);
++    rv = nghttp2_frame_pack_headers(&bufs, &frame.headers, &deflater);
++
++    CU_ASSERT(0 == rv);
++
++    nghttp2_frame_headers_free(&frame.headers, mem);
++
++    buf = &bufs.head->buf;
++    rv = nghttp2_session_mem_recv(session, buf->pos, nghttp2_buf_len(buf));
++
++    CU_ASSERT((ssize_t)nghttp2_buf_len(buf) == rv);
++
++    nghttp2_bufs_reset(&bufs);
++
++    /* RST_STREAM */
++    nghttp2_frame_rst_stream_init(&frame.rst_stream, stream_id,
++                                  NGHTTP2_NO_ERROR);
++    nghttp2_frame_pack_rst_stream(&bufs, &frame.rst_stream);
++    nghttp2_frame_rst_stream_free(&frame.rst_stream);
++
++    buf = &bufs.head->buf;
++    rv = nghttp2_session_mem_recv(session, buf->pos, nghttp2_buf_len(buf));
++
++    CU_ASSERT((ssize_t)nghttp2_buf_len(buf) == rv);
++
++    if (i < NGHTTP2_DEFAULT_STREAM_RESET_BURST) {
++      CU_ASSERT(0 == nghttp2_outbound_queue_size(&session->ob_reg));
++
++      continue;
++    }
++
++    CU_ASSERT(1 == nghttp2_outbound_queue_size(&session->ob_reg));
++
++    item = nghttp2_session_get_next_ob_item(session);
++
++    CU_ASSERT(NGHTTP2_GOAWAY == item->frame.hd.type);
++    CU_ASSERT(NGHTTP2_DEFAULT_STREAM_RESET_BURST * 2 + 1 ==
++              item->frame.goaway.last_stream_id);
++  }
++
++  nghttp2_hd_deflate_free(&deflater);
++  nghttp2_session_del(session);
++  nghttp2_bufs_free(&bufs);
++  nghttp2_option_del(option);
++}
++
+ static void check_nghttp2_http_recv_headers_fail(
+     nghttp2_session *session, nghttp2_hd_deflater *deflater, int32_t stream_id,
+     int stream_state, const nghttp2_nv *nva, size_t nvlen) {
+--- a/tests/nghttp2_session_test.h
++++ b/tests/nghttp2_session_test.h
+@@ -160,6 +160,7 @@ void test_nghttp2_session_removed_closed
+ void test_nghttp2_session_pause_data(void);
+ void test_nghttp2_session_no_closed_streams(void);
+ void test_nghttp2_session_set_stream_user_data(void);
++void test_nghttp2_session_stream_reset_ratelim(void);
+ void test_nghttp2_http_mandatory_headers(void);
+ void test_nghttp2_http_content_length(void);
+ void test_nghttp2_http_content_length_mismatch(void);
+--- a/tests/CMakeLists.txt
++++ b/tests/CMakeLists.txt
+@@ -21,6 +21,7 @@ if(HAVE_CUNIT)
+     nghttp2_npn_test.c
+     nghttp2_helper_test.c
+     nghttp2_buf_test.c
++    nghttp2_ratelim_test.c
+   )
+ 
+   add_executable(main EXCLUDE_FROM_ALL
+--- a/tests/Makefile.am
++++ b/tests/Makefile.am
+@@ -40,14 +40,16 @@ OBJECTS = main.c nghttp2_pq_test.c nghtt
+ 	nghttp2_hd_test.c \
+ 	nghttp2_npn_test.c \
+ 	nghttp2_helper_test.c \
+-	nghttp2_buf_test.c
++	nghttp2_buf_test.c \
++	nghttp2_ratelim_test.c
+ 
+ HFILES = nghttp2_pq_test.h nghttp2_map_test.h nghttp2_queue_test.h \
+ 	nghttp2_session_test.h \
+ 	nghttp2_frame_test.h nghttp2_stream_test.h nghttp2_hd_test.h \
+ 	nghttp2_npn_test.h nghttp2_helper_test.h \
+ 	nghttp2_test_helper.h \
+-	nghttp2_buf_test.h
++	nghttp2_buf_test.h \
++	nghttp2_ratelim_test.h
+ 
+ main_SOURCES = $(HFILES) $(OBJECTS)
+ 
+--- a/lib/nghttp2_option.h
++++ b/lib/nghttp2_option.h
+@@ -68,6 +68,7 @@ typedef enum {
+   NGHTTP2_OPT_NO_CLOSED_STREAMS = 1 << 10,
+   NGHTTP2_OPT_MAX_OUTBOUND_ACK = 1 << 11,
+   NGHTTP2_OPT_MAX_SETTINGS = 1 << 12,
++  NGHTTP2_OPT_STREAM_RESET_RATE_LIMIT = 1 << 15,
+ } nghttp2_option_flag;
+ 
+ /**
+@@ -75,6 +76,11 @@ typedef enum {
+  */
+ struct nghttp2_option {
+   /**
++   * NGHTTP2_OPT_STREAM_RESET_RATE_LIMIT
++   */
++  uint64_t stream_reset_burst;
++  uint64_t stream_reset_rate;
++  /**
+    * NGHTTP2_OPT_MAX_SEND_HEADER_BLOCK_LENGTH
+    */
+   size_t max_send_header_block_length;
+--- a/tests/main.c
++++ b/tests/main.c
+@@ -40,6 +40,7 @@
+ #include "nghttp2_npn_test.h"
+ #include "nghttp2_helper_test.h"
+ #include "nghttp2_buf_test.h"
++#include "nghttp2_ratelim_test.h"
+ 
+ extern int nghttp2_enable_strict_preface;
+ 
+@@ -323,6 +324,8 @@ int main() {
+                    test_nghttp2_session_no_closed_streams) ||
+       !CU_add_test(pSuite, "session_set_stream_user_data",
+                    test_nghttp2_session_set_stream_user_data) ||
++      !CU_add_test(pSuite, "session_stream_reset_ratelim",
++		   test_nghttp2_session_stream_reset_ratelim) ||
+       !CU_add_test(pSuite, "http_mandatory_headers",
+                    test_nghttp2_http_mandatory_headers) ||
+       !CU_add_test(pSuite, "http_content_length",
+@@ -418,7 +421,9 @@ int main() {
+       !CU_add_test(pSuite, "bufs_advance", test_nghttp2_bufs_advance) ||
+       !CU_add_test(pSuite, "bufs_next_present",
+                    test_nghttp2_bufs_next_present) ||
+-      !CU_add_test(pSuite, "bufs_realloc", test_nghttp2_bufs_realloc)) {
++      !CU_add_test(pSuite, "bufs_realloc", test_nghttp2_bufs_realloc) ||
++      !CU_add_test(pSuite, "ratelim_update", test_nghttp2_ratelim_update) ||
++      !CU_add_test(pSuite, "ratelim_drain", test_nghttp2_ratelim_drain)) {
+     CU_cleanup_registry();
+     return (int)CU_get_error();
+   }
diff --git a/meta/recipes-support/nghttp2/nghttp2_1.47.0.bb b/meta/recipes-support/nghttp2/nghttp2_1.47.0.bb
index 0b9091f7e8..b67313b5c2 100644
--- a/meta/recipes-support/nghttp2/nghttp2_1.47.0.bb
+++ b/meta/recipes-support/nghttp2/nghttp2_1.47.0.bb
@@ -10,6 +10,7 @@ SRC_URI = "\
     https://github.com/nghttp2/nghttp2/releases/download/v${PV}/nghttp2-${PV}.tar.xz \
     file://0001-fetch-ocsp-response-use-python3.patch \
     file://CVE-2023-35945.patch \
+    file://CVE-2023-44487.patch \
 "
 SRC_URI[sha256sum] = "68271951324554c34501b85190f22f2221056db69f493afc3bbac8e7be21e7cc"