File apache2-CVE-2024-24795.patch of Package apache2.34694
Index: httpd-2.4.23/include/util_script.h
===================================================================
--- httpd-2.4.23.orig/include/util_script.h
+++ httpd-2.4.23/include/util_script.h
@@ -225,6 +225,8 @@ AP_DECLARE(int) ap_scan_script_header_er
*/
AP_DECLARE(void) ap_args_to_table(request_rec *r, apr_table_t **table);
+#define AP_TRUST_CGILIKE_CL_ENVVAR "ap_trust_cgilike_cl"
+
#ifdef __cplusplus
}
#endif
Index: httpd-2.4.23/modules/aaa/mod_authnz_fcgi.c
===================================================================
--- httpd-2.4.23.orig/modules/aaa/mod_authnz_fcgi.c
+++ httpd-2.4.23/modules/aaa/mod_authnz_fcgi.c
@@ -571,6 +571,14 @@ static apr_status_t handle_response(cons
"parsing -> %d/%d",
fn, status, r->status);
+ /* FCGI has its own body framing mechanism which we don't
+ * match against any provided Content-Length, so let the
+ * core determine C-L vs T-E based on what's actually sent.
+ */
+ if (!apr_table_get(r->subprocess_env, AP_TRUST_CGILIKE_CL_ENVVAR))
+ apr_table_unset(r->headers_out, "Content-Length");
+ apr_table_unset(r->headers_out, "Transfer-Encoding");
+
if (rspbuf) { /* caller wants to see response body,
* if any
*/
Index: httpd-2.4.23/modules/generators/mod_cgi.c
===================================================================
--- httpd-2.4.23.orig/modules/generators/mod_cgi.c
+++ httpd-2.4.23/modules/generators/mod_cgi.c
@@ -944,9 +944,18 @@ static int cgi_handler(request_rec *r)
char sbuf[MAX_STRING_LEN];
int ret;
- if ((ret = ap_scan_script_header_err_brigade_ex(r, bb, sbuf,
- APLOG_MODULE_INDEX)))
- {
+ ret = ap_scan_script_header_err_brigade_ex(r, bb, sbuf,
+ APLOG_MODULE_INDEX);
+
+ /* xCGI has its own body framing mechanism which we don't
+ * match against any provided Content-Length, so let the
+ * core determine C-L vs T-E based on what's actually sent.
+ */
+ if (!apr_table_get(r->subprocess_env, AP_TRUST_CGILIKE_CL_ENVVAR))
+ apr_table_unset(r->headers_out, "Content-Length");
+ apr_table_unset(r->headers_out, "Transfer-Encoding");
+
+ if (ret != OK) {
ret = log_script(r, conf, ret, dbuf, sbuf, bb, script_err);
/*
Index: httpd-2.4.23/modules/generators/mod_cgid.c
===================================================================
--- httpd-2.4.23.orig/modules/generators/mod_cgid.c
+++ httpd-2.4.23/modules/generators/mod_cgid.c
@@ -1614,9 +1614,18 @@ static int cgid_handler(request_rec *r)
b = apr_bucket_eos_create(c->bucket_alloc);
APR_BRIGADE_INSERT_TAIL(bb, b);
- if ((ret = ap_scan_script_header_err_brigade_ex(r, bb, sbuf,
- APLOG_MODULE_INDEX)))
- {
+ ret = ap_scan_script_header_err_brigade_ex(r, bb, sbuf,
+ APLOG_MODULE_INDEX);
+
+ /* xCGI has its own body framing mechanism which we don't
+ * match against any provided Content-Length, so let the
+ * core determine C-L vs T-E based on what's actually sent.
+ */
+ if (!apr_table_get(r->subprocess_env, AP_TRUST_CGILIKE_CL_ENVVAR))
+ apr_table_unset(r->headers_out, "Content-Length");
+ apr_table_unset(r->headers_out, "Transfer-Encoding");
+
+ if (ret != OK) {
ret = log_script(r, conf, ret, dbuf, sbuf, bb, NULL);
/*
Index: httpd-2.4.23/modules/proxy/ajp_header.c
===================================================================
--- httpd-2.4.23.orig/modules/proxy/ajp_header.c
+++ httpd-2.4.23/modules/proxy/ajp_header.c
@@ -17,6 +17,8 @@
#include "ajp_header.h"
#include "ajp.h"
+#include "util_script.h"
+
APLOG_USE_MODULE(proxy_ajp);
static const char *response_trans_headers[] = {
@@ -661,6 +663,14 @@ static apr_status_t ajp_unmarshal_respon
}
}
+ /* AJP has its own body framing mechanism which we don't
+ * match against any provided Content-Length, so let the
+ * core determine C-L vs T-E based on what's actually sent.
+ */
+ if (!apr_table_get(r->subprocess_env, AP_TRUST_CGILIKE_CL_ENVVAR))
+ apr_table_unset(r->headers_out, "Content-Length");
+ apr_table_unset(r->headers_out, "Transfer-Encoding");
+
return APR_SUCCESS;
}
Index: httpd-2.4.23/modules/proxy/mod_proxy_fcgi.c
===================================================================
--- httpd-2.4.23.orig/modules/proxy/mod_proxy_fcgi.c
+++ httpd-2.4.23/modules/proxy/mod_proxy_fcgi.c
@@ -642,6 +642,15 @@ recv_again:
status = ap_scan_script_header_err_brigade_ex(r, ob,
NULL, APLOG_MODULE_INDEX);
+
+ /* FCGI has its own body framing mechanism which we don't
+ * match against any provided Content-Length, so let the
+ * core determine C-L vs T-E based on what's actually sent.
+ */
+ if (!apr_table_get(r->subprocess_env, AP_TRUST_CGILIKE_CL_ENVVAR))
+ apr_table_unset(r->headers_out, "Content-Length");
+ apr_table_unset(r->headers_out, "Transfer-Encoding");
+
/* suck in all the rest */
if (status != OK) {
apr_bucket *tmp_b;
Index: httpd-2.4.23/modules/proxy/mod_proxy_scgi.c
===================================================================
--- httpd-2.4.23.orig/modules/proxy/mod_proxy_scgi.c
+++ httpd-2.4.23/modules/proxy/mod_proxy_scgi.c
@@ -388,6 +388,14 @@ static int pass_response(request_rec *r,
return status;
}
+ /* SCGI has its own body framing mechanism which we don't
+ * match against any provided Content-Length, so let the
+ * core determine C-L vs T-E based on what's actually sent.
+ */
+ if (!apr_table_get(r->subprocess_env, AP_TRUST_CGILIKE_CL_ENVVAR))
+ apr_table_unset(r->headers_out, "Content-Length");
+ apr_table_unset(r->headers_out, "Transfer-Encoding");
+
conf = ap_get_module_config(r->per_dir_config, &proxy_scgi_module);
if (conf->sendfile && conf->sendfile != scgi_sendfile_off) {
short err = 1;
Index: httpd-2.4.23/modules/http/http_filters.c
===================================================================
--- httpd-2.4.23.orig/modules/http/http_filters.c
+++ httpd-2.4.23/modules/http/http_filters.c
@@ -774,6 +774,20 @@ static APR_INLINE int check_headers(requ
struct check_header_ctx ctx;
core_server_config *conf =
ap_get_core_module_config(r->server->module_config);
+ const char *val;
+
+ if ((val = apr_table_get(r->headers_out, "Transfer-Encoding"))) {
+ if (apr_table_get(r->headers_out, "Content-Length")) {
+ apr_table_unset(r->headers_out, "Content-Length");
+ r->connection->keepalive = AP_CONN_CLOSE;
+ }
+ /* see 1873906 */
+ if (!(strcasecmp(val, "chunked") == 0 /* fast path */
+ || ap_find_last_token(r->pool, val, "chunked"))) {
+ r->connection->keepalive = AP_CONN_CLOSE;
+ return 0;
+ }
+ }
ctx.r = r;
ctx.strict = (conf->http_conformance != AP_HTTP_CONFORMANCE_UNSAFE);
