diff options
Diffstat (limited to 'main/nginx/CVE-2023-44487.patch')
| -rw-r--r-- | main/nginx/CVE-2023-44487.patch | 71 |
1 files changed, 0 insertions, 71 deletions
diff --git a/main/nginx/CVE-2023-44487.patch b/main/nginx/CVE-2023-44487.patch deleted file mode 100644 index b9fcfbf7d6c..00000000000 --- a/main/nginx/CVE-2023-44487.patch +++ /dev/null @@ -1,71 +0,0 @@ - -# HG changeset patch -# User Maxim Dounin <mdounin@mdounin.ru> -# Date 1696940019 -10800 -# Node ID cdda286c0f1b4b10f30d4eb6a63fefb9b8708ecc -# Parent 3db945fda515014d220151046d02f3960bcfca0a -HTTP/2: per-iteration stream handling limit. - -To ensure that attempts to flood servers with many streams are detected -early, a limit of no more than 2 * max_concurrent_streams new streams per one -event loop iteration was introduced. This limit is applied even if -max_concurrent_streams is not yet reached - for example, if corresponding -streams are handled synchronously or reset. - -Further, refused streams are now limited to maximum of max_concurrent_streams -and 100, similarly to priority_limit initial value, providing some tolerance -to clients trying to open several streams at the connection start, yet -low tolerance to flooding attempts. - -diff -r 3db945fda515 -r cdda286c0f1b src/http/v2/ngx_http_v2.c ---- a/src/http/v2/ngx_http_v2.c Fri Sep 22 19:23:57 2023 +0400 -+++ b/src/http/v2/ngx_http_v2.c Tue Oct 10 15:13:39 2023 +0300 -@@ -347,6 +347,7 @@ - ngx_log_debug0(NGX_LOG_DEBUG_HTTP, c->log, 0, "http2 read handler"); - - h2c->blocked = 1; -+ h2c->new_streams = 0; - - if (c->close) { - c->close = 0; -@@ -1284,6 +1285,14 @@ - goto rst_stream; - } - -+ if (h2c->new_streams++ >= 2 * h2scf->concurrent_streams) { -+ ngx_log_error(NGX_LOG_INFO, h2c->connection->log, 0, -+ "client sent too many streams at once"); -+ -+ status = NGX_HTTP_V2_REFUSED_STREAM; -+ goto rst_stream; -+ } -+ - if (!h2c->settings_ack - && !(h2c->state.flags & NGX_HTTP_V2_END_STREAM_FLAG) - && h2scf->preread_size < NGX_HTTP_V2_DEFAULT_WINDOW) -@@ -1349,6 +1358,12 @@ - - rst_stream: - -+ if (h2c->refused_streams++ > ngx_max(h2scf->concurrent_streams, 100)) { -+ ngx_log_error(NGX_LOG_INFO, h2c->connection->log, 0, -+ "client sent too many refused streams"); -+ return ngx_http_v2_connection_error(h2c, NGX_HTTP_V2_NO_ERROR); -+ } -+ - if (ngx_http_v2_send_rst_stream(h2c, h2c->state.sid, status) != NGX_OK) { - return ngx_http_v2_connection_error(h2c, NGX_HTTP_V2_INTERNAL_ERROR); - } -diff -r 3db945fda515 -r cdda286c0f1b src/http/v2/ngx_http_v2.h ---- a/src/http/v2/ngx_http_v2.h Fri Sep 22 19:23:57 2023 +0400 -+++ b/src/http/v2/ngx_http_v2.h Tue Oct 10 15:13:39 2023 +0300 -@@ -131,6 +131,8 @@ - ngx_uint_t processing; - ngx_uint_t frames; - ngx_uint_t idle; -+ ngx_uint_t new_streams; -+ ngx_uint_t refused_streams; - ngx_uint_t priority_limit; - - size_t send_window; - |