nghttp2/nghttp2-CVE-2024-28182-2.patch

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From d71a4668c6bead55805d18810d633fbb98315af9 Mon Sep 17 00:00:00 2001
From: Tatsuhiro Tsujikawa <tatsuhiro.t@gmail.com>
Date: Sat, 9 Mar 2024 16:48:10 +0900
Subject: [PATCH] Add nghttp2_option_set_max_continuations
---
doc/Makefile.am | 1 +
lib/includes/nghttp2/nghttp2.h | 11 +++++++++++
lib/nghttp2_option.c | 5 +++++
lib/nghttp2_option.h | 5 +++++
lib/nghttp2_session.c | 4 ++++
5 files changed, 26 insertions(+)
Index: nghttp2-1.52.0/lib/includes/nghttp2/nghttp2.h
===================================================================
--- nghttp2-1.52.0.orig/lib/includes/nghttp2/nghttp2.h
+++ nghttp2-1.52.0/lib/includes/nghttp2/nghttp2.h
@@ -3215,6 +3215,17 @@ nghttp2_session_set_stream_user_data(ngh
/**
* @function
*
+ * This function sets the maximum number of CONTINUATION frames
+ * following an incoming HEADER frame. If more than those frames are
+ * received, the remote endpoint is considered to be misbehaving and
+ * session will be closed. The default value is 8.
+ */
+NGHTTP2_EXTERN void nghttp2_option_set_max_continuations(nghttp2_option *option,
+ size_t val);
+
+/**
+ * @function
+ *
* Sets |user_data| to |session|, overwriting the existing user data
* specified in `nghttp2_session_client_new()`, or
* `nghttp2_session_server_new()`.
Index: nghttp2-1.52.0/lib/nghttp2_option.c
===================================================================
--- nghttp2-1.52.0.orig/lib/nghttp2_option.c
+++ nghttp2-1.52.0/lib/nghttp2_option.c
@@ -143,3 +143,8 @@ void nghttp2_option_set_no_rfc9113_leadi
NGHTTP2_OPT_NO_RFC9113_LEADING_AND_TRAILING_WS_VALIDATION;
option->no_rfc9113_leading_and_trailing_ws_validation = val;
}
+
+void nghttp2_option_set_max_continuations(nghttp2_option *option, size_t val) {
+ option->opt_set_mask |= NGHTTP2_OPT_MAX_CONTINUATIONS;
+ option->max_continuations = val;
+}
Index: nghttp2-1.52.0/lib/nghttp2_option.h
===================================================================
--- nghttp2-1.52.0.orig/lib/nghttp2_option.h
+++ nghttp2-1.52.0/lib/nghttp2_option.h
@@ -70,6 +70,7 @@ typedef enum {
NGHTTP2_OPT_MAX_SETTINGS = 1 << 12,
NGHTTP2_OPT_SERVER_FALLBACK_RFC7540_PRIORITIES = 1 << 13,
NGHTTP2_OPT_NO_RFC9113_LEADING_AND_TRAILING_WS_VALIDATION = 1 << 14,
+ NGHTTP2_OPT_MAX_CONTINUATIONS = 1 << 16,
} nghttp2_option_flag;
/**
@@ -93,6 +94,10 @@ struct nghttp2_option {
*/
size_t max_settings;
/**
+ * NGHTTP2_OPT_MAX_CONTINUATIONS
+ */
+ size_t max_continuations;
+ /**
* Bitwise OR of nghttp2_option_flag to determine that which fields
* are specified.
*/
Index: nghttp2-1.52.0/lib/nghttp2_session.c
===================================================================
--- nghttp2-1.52.0.orig/lib/nghttp2_session.c
+++ nghttp2-1.52.0/lib/nghttp2_session.c
@@ -574,6 +574,10 @@ static int session_new(nghttp2_session *
(*session_ptr)->opt_flags |=
NGHTTP2_OPTMASK_NO_RFC9113_LEADING_AND_TRAILING_WS_VALIDATION;
}
+
+ if (option->opt_set_mask & NGHTTP2_OPT_MAX_CONTINUATIONS) {
+ (*session_ptr)->max_continuations = option->max_continuations;
+ }
}
rv = nghttp2_hd_deflate_init2(&(*session_ptr)->hd_deflater,