httpd/httpd-2.4.37-CVE-2022-29404.patch

diff --git a/docs/manual/mod/core.html.en b/docs/manual/mod/core.html.en
index e1ec8d0..833fa7b 100644
--- a/docs/manual/mod/core.html.en
+++ b/docs/manual/mod/core.html.en
@@ -2748,16 +2748,16 @@ subrequests</td></tr>
 <tr><th><a href="directive-dict.html#Description">Description:</a></th><td>Restricts the total size of the HTTP request body sent
 from the client</td></tr>
 <tr><th><a href="directive-dict.html#Syntax">Syntax:</a></th><td><code>LimitRequestBody <var>bytes</var></code></td></tr>
-<tr><th><a href="directive-dict.html#Default">Default:</a></th><td><code>LimitRequestBody 0</code></td></tr>
+<tr><th><a href="directive-dict.html#Default">Default:</a></th><td><code>LimitRequestBody 1073741824</code></td></tr>
 <tr><th><a href="directive-dict.html#Context">Context:</a></th><td>server config, virtual host, directory, .htaccess</td></tr>
 <tr><th><a href="directive-dict.html#Override">Override:</a></th><td>All</td></tr>
 <tr><th><a href="directive-dict.html#Status">Status:</a></th><td>Core</td></tr>
 <tr><th><a href="directive-dict.html#Module">Module:</a></th><td>core</td></tr>
+<tr><th><a href="directive-dict.html#Compatibility">Compatibility:</a></th><td>In Apache HTTP Server 2.4.53 and earlier, the default value
+    was 0 (unlimited)</td></tr>
 </table>
-    <p>This directive specifies the number of <var>bytes</var> from 0
-    (meaning unlimited) to 2147483647 (2GB) that are allowed in a
-    request body. See the note below for the limited applicability
-    to proxy requests.</p>
+    <p>This directive specifies the number of <var>bytes</var>
+    that are allowed in a request body. A value of <var>0</var> means unlimited.</p>
 
     <p>The <code class="directive">LimitRequestBody</code> directive allows
     the user to set a limit on the allowed size of an HTTP request
@@ -2783,12 +2783,6 @@ from the client</td></tr>
 
     <pre class="prettyprint lang-config">LimitRequestBody 102400</pre>
 
-
-    <div class="note"><p>For a full description of how this directive is interpreted by
-    proxy requests, see the <code class="module"><a href="../mod/mod_proxy.html">mod_proxy</a></code> documentation.</p>
-    </div>
-
-
 </div>
 <div class="top"><a href="#page-header"><img alt="top" src="../images/up.gif" /></a></div>
 <div class="directive-section"><h2><a name="LimitRequestFields" id="LimitRequestFields">LimitRequestFields</a> <a name="limitrequestfields" id="limitrequestfields">Directive</a></h2>
diff --git a/docs/manual/mod/mod_proxy.html.en b/docs/manual/mod/mod_proxy.html.en
index 2cc6ace..c9e4634 100644
--- a/docs/manual/mod/mod_proxy.html.en
+++ b/docs/manual/mod/mod_proxy.html.en
@@ -459,9 +459,6 @@ ProxyPass "/examples" "http://backend.example.com/examples" timeout=10</pre>
     Content-Length header, but the server is configured to filter incoming
     request bodies.</p>
 
-    <p><code class="directive"><a href="../mod/core.html#limitrequestbody">LimitRequestBody</a></code> only applies to
-    request bodies that the server will spool to disk</p>
-
     </div><div class="top"><a href="#page-header"><img alt="top" src="../images/up.gif" /></a></div>
 <div class="section">
 <h2><a name="x-headers" id="x-headers">Reverse Proxy Request Headers</a></h2>
diff --git a/modules/http/http_filters.c b/modules/http/http_filters.c
index 6bedcac..393343a 100644
--- a/modules/http/http_filters.c
+++ b/modules/http/http_filters.c
@@ -1710,6 +1710,7 @@ AP_DECLARE(int) ap_setup_client_block(request_rec *r, int read_policy)
 {
     const char *tenc = apr_table_get(r->headers_in, "Transfer-Encoding");
     const char *lenp = apr_table_get(r->headers_in, "Content-Length");
+    apr_off_t limit_req_body = ap_get_limit_req_body(r);
 
     r->read_body = read_policy;
     r->read_chunked = 0;
@@ -1748,6 +1749,11 @@ AP_DECLARE(int) ap_setup_client_block(request_rec *r, int read_policy)
         return HTTP_REQUEST_ENTITY_TOO_LARGE;
     }
 
+    if (limit_req_body > 0 && (r->remaining > limit_req_body)) {
+        /* will be logged when the body is discarded */
+        return HTTP_REQUEST_ENTITY_TOO_LARGE;
+    }
+
 #ifdef AP_DEBUG
     {
         /* Make sure ap_getline() didn't leave any droppings. */
diff --git a/server/core.c b/server/core.c
index a0bfaad..6556f20 100644
--- a/server/core.c
+++ b/server/core.c
@@ -65,7 +65,7 @@
 
 /* LimitRequestBody handling */
 #define AP_LIMIT_REQ_BODY_UNSET         ((apr_off_t) -1)
-#define AP_DEFAULT_LIMIT_REQ_BODY       ((apr_off_t) 0)
+#define AP_DEFAULT_LIMIT_REQ_BODY       ((apr_off_t) 1<<30) /* 1GB */
 
 /* LimitXMLRequestBody handling */
 #define AP_LIMIT_UNSET                  ((long) -1)