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httpd/SOURCES/httpd-2.4.53-CVE-2022-29404.patch
CentOS Sources 755d5ac75e import httpd-2.4.53-7.el9
2022-11-15 11:16:08 +00:00

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diff --git a/docs/manual/mod/core.html.en b/docs/manual/mod/core.html.en
index bb6b90a..d14aed4 100644
--- a/docs/manual/mod/core.html.en
+++ b/docs/manual/mod/core.html.en
@@ -2796,16 +2796,16 @@ 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
@@ -2831,12 +2831,6 @@ 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 ee7b1e3..233d234 100644
--- a/docs/manual/mod/mod_proxy.html.en
+++ b/docs/manual/mod/mod_proxy.html.en
@@ -463,9 +463,6 @@ 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 43e8c6d..33c78f3 100644
--- a/modules/http/http_filters.c
+++ b/modules/http/http_filters.c
@@ -1703,6 +1703,7 @@ 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;
@@ -1738,6 +1739,11 @@ 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/modules/proxy/proxy_util.c b/modules/proxy/proxy_util.c
index bc86253..85f2f9c 100644
--- a/modules/proxy/proxy_util.c
+++ b/modules/proxy/proxy_util.c
@@ -4260,13 +4260,10 @@ PROXY_DECLARE(int) ap_proxy_spool_input(request_rec *r,
apr_bucket *e;
apr_off_t bytes, fsize = 0;
apr_file_t *tmpfile = NULL;
- apr_off_t limit;
*bytes_spooled = 0;
body_brigade = apr_brigade_create(p, bucket_alloc);
- limit = ap_get_limit_req_body(r);
-
do {
if (APR_BRIGADE_EMPTY(input_brigade)) {
rv = ap_proxy_read_input(r, backend, input_brigade,
@@ -4284,17 +4281,6 @@ PROXY_DECLARE(int) ap_proxy_spool_input(request_rec *r,
apr_brigade_length(input_brigade, 1, &bytes);
if (*bytes_spooled + bytes > max_mem_spool) {
- /*
- * LimitRequestBody does not affect Proxy requests (Should it?).
- * Let it take effect if we decide to store the body in a
- * temporary file on disk.
- */
- if (limit && (*bytes_spooled + bytes > limit)) {
- ap_log_rerror(APLOG_MARK, APLOG_ERR, 0, r, APLOGNO(01088)
- "Request body is larger than the configured "
- "limit of %" APR_OFF_T_FMT, limit);
- return HTTP_REQUEST_ENTITY_TOO_LARGE;
- }
/* can't spool any more in memory; write latest brigade to disk */
if (tmpfile == NULL) {
const char *temp_dir;
diff --git a/server/core.c b/server/core.c
index 3d44e0e..682259f 100644
--- a/server/core.c
+++ b/server/core.c
@@ -71,7 +71,7 @@
/* 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)
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