import httpd-2.4.37-43.module+el8.5.0+14530+6f259f31.3
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154
SOURCES/httpd-2.4.37-CVE-2022-22720.patch
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154
SOURCES/httpd-2.4.37-CVE-2022-22720.patch
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@ -0,0 +1,154 @@
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diff --git a/modules/http/http_filters.c b/modules/http/http_filters.c
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index 9828cdf..6bedcac 100644
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--- a/modules/http/http_filters.c
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+++ b/modules/http/http_filters.c
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@@ -1605,9 +1605,9 @@ AP_DECLARE(int) ap_map_http_request_error(apr_status_t rv, int status)
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*/
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AP_DECLARE(int) ap_discard_request_body(request_rec *r)
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{
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+ int rc = OK;
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+ conn_rec *c = r->connection;
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apr_bucket_brigade *bb;
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- int seen_eos;
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- apr_status_t rv;
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/* Sometimes we'll get in a state where the input handling has
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* detected an error where we want to drop the connection, so if
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@@ -1616,54 +1616,57 @@ AP_DECLARE(int) ap_discard_request_body(request_rec *r)
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*
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* This function is also a no-op on a subrequest.
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*/
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- if (r->main || r->connection->keepalive == AP_CONN_CLOSE ||
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- ap_status_drops_connection(r->status)) {
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+ if (r->main || c->keepalive == AP_CONN_CLOSE) {
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+ return OK;
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+ }
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+ if (ap_status_drops_connection(r->status)) {
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+ c->keepalive = AP_CONN_CLOSE;
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return OK;
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}
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bb = apr_brigade_create(r->pool, r->connection->bucket_alloc);
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- seen_eos = 0;
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- do {
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- apr_bucket *bucket;
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+ for (;;) {
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+ apr_status_t rv;
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rv = ap_get_brigade(r->input_filters, bb, AP_MODE_READBYTES,
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APR_BLOCK_READ, HUGE_STRING_LEN);
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-
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if (rv != APR_SUCCESS) {
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- apr_brigade_destroy(bb);
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- return ap_map_http_request_error(rv, HTTP_BAD_REQUEST);
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+ rc = ap_map_http_request_error(rv, HTTP_BAD_REQUEST);
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+ goto cleanup;
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}
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- for (bucket = APR_BRIGADE_FIRST(bb);
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- bucket != APR_BRIGADE_SENTINEL(bb);
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- bucket = APR_BUCKET_NEXT(bucket))
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- {
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- const char *data;
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- apr_size_t len;
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+ while (!APR_BRIGADE_EMPTY(bb)) {
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+ apr_bucket *b = APR_BRIGADE_FIRST(bb);
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- if (APR_BUCKET_IS_EOS(bucket)) {
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- seen_eos = 1;
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- break;
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+ if (APR_BUCKET_IS_EOS(b)) {
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+ goto cleanup;
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}
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- /* These are metadata buckets. */
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- if (bucket->length == 0) {
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- continue;
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- }
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-
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- /* We MUST read because in case we have an unknown-length
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- * bucket or one that morphs, we want to exhaust it.
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+ /* There is no need to read empty or metadata buckets or
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+ * buckets of known length, but we MUST read buckets of
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+ * unknown length in order to exhaust them.
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*/
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- rv = apr_bucket_read(bucket, &data, &len, APR_BLOCK_READ);
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+ if (b->length == (apr_size_t)-1) {
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+ apr_size_t len;
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+ const char *data;
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+
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+ rv = apr_bucket_read(b, &data, &len, APR_BLOCK_READ);
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if (rv != APR_SUCCESS) {
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- apr_brigade_destroy(bb);
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- return HTTP_BAD_REQUEST;
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+ rc = HTTP_BAD_REQUEST;
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+ goto cleanup;
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}
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}
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- apr_brigade_cleanup(bb);
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- } while (!seen_eos);
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- return OK;
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+ apr_bucket_delete(b);
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+ }
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+ }
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+
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+cleanup:
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+ apr_brigade_cleanup(bb);
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+ if (rc != OK) {
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+ c->keepalive = AP_CONN_CLOSE;
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+ }
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+ return rc;
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}
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/* Here we deal with getting the request message body from the client.
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diff --git a/server/protocol.c b/server/protocol.c
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index a2aa081..a554970 100644
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--- a/server/protocol.c
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+++ b/server/protocol.c
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@@ -1666,23 +1666,29 @@ AP_DECLARE(void) ap_set_sub_req_protocol(request_rec *rnew,
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rnew->main = (request_rec *) r;
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}
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-static void end_output_stream(request_rec *r)
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+static void end_output_stream(request_rec *r, int status)
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{
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conn_rec *c = r->connection;
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apr_bucket_brigade *bb;
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apr_bucket *b;
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bb = apr_brigade_create(r->pool, c->bucket_alloc);
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+ if (status != OK) {
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+ b = ap_bucket_error_create(status, NULL, r->pool, c->bucket_alloc);
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+ APR_BRIGADE_INSERT_TAIL(bb, b);
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+ }
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b = apr_bucket_eos_create(c->bucket_alloc);
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APR_BRIGADE_INSERT_TAIL(bb, b);
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+
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ap_pass_brigade(r->output_filters, bb);
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+ apr_brigade_cleanup(bb);
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}
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AP_DECLARE(void) ap_finalize_sub_req_protocol(request_rec *sub)
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{
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/* tell the filter chain there is no more content coming */
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if (!sub->eos_sent) {
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- end_output_stream(sub);
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+ end_output_stream(sub, OK);
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}
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}
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@@ -1693,11 +1699,11 @@ AP_DECLARE(void) ap_finalize_sub_req_protocol(request_rec *sub)
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*/
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AP_DECLARE(void) ap_finalize_request_protocol(request_rec *r)
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{
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- (void) ap_discard_request_body(r);
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+ int status = ap_discard_request_body(r);
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/* tell the filter chain there is no more content coming */
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if (!r->eos_sent) {
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- end_output_stream(r);
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+ end_output_stream(r, status);
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}
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}
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@ -13,7 +13,7 @@
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Summary: Apache HTTP Server
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Name: httpd
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Version: 2.4.37
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Release: 43%{?dist}.2
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Release: 43%{?dist}.3
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URL: https://httpd.apache.org/
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Source0: https://www.apache.org/dist/httpd/httpd-%{version}.tar.bz2
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Source2: httpd.logrotate
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@ -202,6 +202,8 @@ Patch216: httpd-2.4.37-CVE-2021-44790.patch
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Patch217: httpd-2.4.37-CVE-2021-34798.patch
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# https://bugzilla.redhat.com/show_bug.cgi?id=2005119
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Patch218: httpd-2.4.37-CVE-2021-39275.patch
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# https://bugzilla.redhat.com/show_bug.cgi?id=2064321#
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Patch219: httpd-2.4.37-CVE-2022-22720.patch
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License: ASL 2.0
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Group: System Environment/Daemons
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@ -400,6 +402,7 @@ interface for storing and accessing per-user session data.
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%patch216 -p1 -b .CVE-2021-44790
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%patch217 -p1 -b .CVE-2021-34798
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%patch218 -p1 -b .CVE-2021-39275
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%patch219 -p1 -b .CVE-2022-22720
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# Patch in the vendor string
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sed -i '/^#define PLATFORM/s/Unix/%{vstring}/' os/unix/os.h
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@ -905,6 +908,10 @@ rm -rf $RPM_BUILD_ROOT
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%{_rpmconfigdir}/macros.d/macros.httpd
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%changelog
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* Mon Mar 21 2022 Luboš Uhliarik <luhliari@redhat.com> - 2.4.37-43.3
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- Resolves: #2065247 - CVE-2022-22720 httpd:2.4/httpd: HTTP request smuggling
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vulnerability in Apache HTTP Server 2.4.52 and earlier
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* Fri Feb 25 2022 Luboš Uhliarik <luhliari@redhat.com> - 2.4.37-43.2
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- Resolves: #2059256 - CVE-2021-34798 httpd:2.4/httpd: NULL pointer dereference
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via malformed requests
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