[oe] [meta-webserver][PATCH] apache2: Fix CVE-2018-11763
mingli.yu at windriver.com
mingli.yu at windriver.com
Mon Oct 29 07:25:49 UTC 2018
From: Mingli Yu <mingli.yu at windriver.com>
mod_http2: connection IO event handling reworked.
Instead of reacting on incoming bytes, the state
machine now acts on incoming frames that are affecting
it. This reduces state transitions.
Reference: https://people.canonical.com/~ubuntu-security/cve/2018/CVE-2018-11763.html
Signed-off-by: Mingli Yu <mingli.yu at windriver.com>
---
.../apache2/apache2-native_2.4.34.bb | 1 +
.../apache2/apache2/CVE-2018-11763.patch | 512 ++++++++++++++++++
.../recipes-httpd/apache2/apache2_2.4.34.bb | 1 +
3 files changed, 514 insertions(+)
create mode 100644 meta-webserver/recipes-httpd/apache2/apache2/CVE-2018-11763.patch
diff --git a/meta-webserver/recipes-httpd/apache2/apache2-native_2.4.34.bb b/meta-webserver/recipes-httpd/apache2/apache2-native_2.4.34.bb
index a3a6804d8..4cc384546 100644
--- a/meta-webserver/recipes-httpd/apache2/apache2-native_2.4.34.bb
+++ b/meta-webserver/recipes-httpd/apache2/apache2-native_2.4.34.bb
@@ -10,6 +10,7 @@ inherit autotools pkgconfig native
SRC_URI = "${APACHE_MIRROR}/httpd/httpd-${PV}.tar.bz2 \
file://0001-configure-use-pkg-config-for-PCRE-detection.patch \
+ file://CVE-2018-11763.patch \
"
S = "${WORKDIR}/httpd-${PV}"
diff --git a/meta-webserver/recipes-httpd/apache2/apache2/CVE-2018-11763.patch b/meta-webserver/recipes-httpd/apache2/apache2/CVE-2018-11763.patch
new file mode 100644
index 000000000..a2c5b2e02
--- /dev/null
+++ b/meta-webserver/recipes-httpd/apache2/apache2/CVE-2018-11763.patch
@@ -0,0 +1,512 @@
+From 484aba5048e3457dc1d15189f1910d007b1a4a76 Mon Sep 17 00:00:00 2001
+From: Jim Jagielski <jim at apache.org>
+Date: Wed, 12 Sep 2018 20:38:02 +0000
+Subject: [PATCH] Merge r1840010 from trunk:
+
+On the trunk:
+
+mod_http2: connection IO event handling reworked. Instead of reacting on
+ incoming bytes, the state machine now acts on incoming frames that are
+ affecting it. This reduces state transitions.
+
+
+Submitted by: icing
+Reviewed by: icing, ylavic, jim
+
+
+git-svn-id: https://svn.apache.org/repos/asf/httpd/httpd/branches/2.4.x@1840757 13f79535-47bb-0310-9956-ffa450edef68
+CVE: CVE-2018-11763
+Upstream-Status: Backport [https://github.com/apache/httpd/commit/484aba5048e3457dc1d15189f1910d007b1a4a76]
+
+Signed-off-by: Mingli Yu <Mingli.Yu at windriver.com>
+---
+ modules/http2/h2_session.c | 238 +++++++++++++++++++++++--------------
+ modules/http2/h2_session.h | 7 +-
+ modules/http2/h2_version.h | 4 +-
+ 3 files changed, 158 insertions(+), 97 deletions(-)
+
+diff --git a/modules/http2/h2_session.c b/modules/http2/h2_session.c
+index 805d6774dc..a1b31d2b30 100644
+--- a/modules/http2/h2_session.c
++++ b/modules/http2/h2_session.c
+@@ -235,6 +235,7 @@ static int on_data_chunk_recv_cb(nghttp2_session *ngh2, uint8_t flags,
+ stream = h2_session_stream_get(session, stream_id);
+ if (stream) {
+ status = h2_stream_recv_DATA(stream, flags, data, len);
++ dispatch_event(session, H2_SESSION_EV_STREAM_CHANGE, 0, "stream data rcvd");
+ }
+ else {
+ ap_log_cerror(APLOG_MARK, APLOG_DEBUG, 0, session->c, APLOGNO(03064)
+@@ -317,9 +318,9 @@ static int on_header_cb(nghttp2_session *ngh2, const nghttp2_frame *frame,
+ }
+
+ /**
+- * nghttp2 session has received a complete frame. Most, it uses
+- * for processing of internal state. HEADER and DATA frames however
+- * we need to handle ourself.
++ * nghttp2 session has received a complete frame. Most are used by nghttp2
++ * for processing of internal state. Some, like HEADER and DATA frames,
++ * we need to act on.
+ */
+ static int on_frame_recv_cb(nghttp2_session *ng2s,
+ const nghttp2_frame *frame,
+@@ -378,6 +379,9 @@ static int on_frame_recv_cb(nghttp2_session *ng2s,
+ "h2_stream(%ld-%d): WINDOW_UPDATE incr=%d",
+ session->id, (int)frame->hd.stream_id,
+ frame->window_update.window_size_increment);
++ if (nghttp2_session_want_write(session->ngh2)) {
++ dispatch_event(session, H2_SESSION_EV_FRAME_RCVD, 0, "window update");
++ }
+ break;
+ case NGHTTP2_RST_STREAM:
+ ap_log_cerror(APLOG_MARK, APLOG_DEBUG, 0, session->c, APLOGNO(03067)
+@@ -404,6 +408,12 @@ static int on_frame_recv_cb(nghttp2_session *ng2s,
+ frame->goaway.error_code, NULL);
+ }
+ break;
++ case NGHTTP2_SETTINGS:
++ if (APLOGctrace2(session->c)) {
++ ap_log_cerror(APLOG_MARK, APLOG_TRACE2, 0, session->c,
++ H2_SSSN_MSG(session, "SETTINGS, len=%ld"), (long)frame->hd.length);
++ }
++ break;
+ default:
+ if (APLOGctrace2(session->c)) {
+ char buffer[256];
+@@ -415,7 +425,40 @@ static int on_frame_recv_cb(nghttp2_session *ng2s,
+ }
+ break;
+ }
+- return (APR_SUCCESS == rv)? 0 : NGHTTP2_ERR_PROTO;
++
++ if (session->state == H2_SESSION_ST_IDLE) {
++ /* We received a frame, but session is in state IDLE. That means the frame
++ * did not really progress any of the (possibly) open streams. It was a meta
++ * frame, e.g. SETTINGS/WINDOW_UPDATE/unknown/etc.
++ * Remember: IDLE means we cannot send because either there are no streams open or
++ * all open streams are blocked on exhausted WINDOWs for outgoing data.
++ * The more frames we receive that do not change this, the less interested we
++ * become in serving this connection. This is expressed in increasing "idle_delays".
++ * Eventually, the connection will timeout and we'll close it. */
++ session->idle_frames = H2MIN(session->idle_frames + 1, session->frames_received);
++ ap_log_cerror( APLOG_MARK, APLOG_TRACE2, 0, session->c,
++ H2_SSSN_MSG(session, "session has %ld idle frames"),
++ (long)session->idle_frames);
++ if (session->idle_frames > 10) {
++ apr_size_t busy_frames = H2MAX(session->frames_received - session->idle_frames, 1);
++ int idle_ratio = (int)(session->idle_frames / busy_frames);
++ if (idle_ratio > 100) {
++ session->idle_delay = apr_time_from_msec(H2MIN(1000, idle_ratio));
++ }
++ else if (idle_ratio > 10) {
++ session->idle_delay = apr_time_from_msec(10);
++ }
++ else if (idle_ratio > 1) {
++ session->idle_delay = apr_time_from_msec(1);
++ }
++ else {
++ session->idle_delay = 0;
++ }
++ }
++ }
++
++ if (APR_SUCCESS != rv) return NGHTTP2_ERR_PROTO;
++ return 0;
+ }
+
+ static int h2_session_continue_data(h2_session *session) {
+@@ -1603,23 +1646,57 @@ static void update_child_status(h2_session *session, int status, const char *msg
+
+ static void transit(h2_session *session, const char *action, h2_session_state nstate)
+ {
++ apr_time_t timeout;
++ int ostate, loglvl;
++ const char *s;
++
+ if (session->state != nstate) {
+- int loglvl = APLOG_DEBUG;
+- if ((session->state == H2_SESSION_ST_BUSY && nstate == H2_SESSION_ST_WAIT)
+- || (session->state == H2_SESSION_ST_WAIT && nstate == H2_SESSION_ST_BUSY)){
++ ostate = session->state;
++ session->state = nstate;
++
++ loglvl = APLOG_DEBUG;
++ if ((ostate == H2_SESSION_ST_BUSY && nstate == H2_SESSION_ST_WAIT)
++ || (ostate == H2_SESSION_ST_WAIT && nstate == H2_SESSION_ST_BUSY)){
+ loglvl = APLOG_TRACE1;
+ }
+ ap_log_cerror(APLOG_MARK, loglvl, 0, session->c,
+ H2_SSSN_LOG(APLOGNO(03078), session,
+ "transit [%s] -- %s --> [%s]"),
+- h2_session_state_str(session->state), action,
++ h2_session_state_str(ostate), action,
+ h2_session_state_str(nstate));
+- session->state = nstate;
++
+ switch (session->state) {
+ case H2_SESSION_ST_IDLE:
+- update_child_status(session, (session->open_streams == 0?
+- SERVER_BUSY_KEEPALIVE
+- : SERVER_BUSY_READ), "idle");
++ if (!session->remote.emitted_count) {
++ /* on fresh connections, with async mpm, do not return
++ * to mpm for a second. This gives the first request a better
++ * chance to arrive (und connection leaving IDLE state).
++ * If we return to mpm right away, this connection has the
++ * same chance of being cleaned up by the mpm as connections
++ * that already served requests - not fair. */
++ session->idle_sync_until = apr_time_now() + apr_time_from_sec(1);
++ s = "timeout";
++ timeout = H2MAX(session->s->timeout, session->s->keep_alive_timeout);
++ update_child_status(session, SERVER_BUSY_READ, "idle");
++ ap_log_cerror(APLOG_MARK, APLOG_TRACE1, 0, session->c,
++ H2_SSSN_LOG("", session, "enter idle, timeout = %d sec"),
++ (int)apr_time_sec(H2MAX(session->s->timeout, session->s->keep_alive_timeout)));
++ }
++ else if (session->open_streams) {
++ s = "timeout";
++ timeout = session->s->keep_alive_timeout;
++ update_child_status(session, SERVER_BUSY_KEEPALIVE, "idle");
++ }
++ else {
++ /* normal keepalive setup */
++ s = "keepalive";
++ timeout = session->s->keep_alive_timeout;
++ update_child_status(session, SERVER_BUSY_KEEPALIVE, "idle");
++ }
++ session->idle_until = apr_time_now() + timeout;
++ ap_log_cerror(APLOG_MARK, APLOG_TRACE1, 0, session->c,
++ H2_SSSN_LOG("", session, "enter idle, %s = %d sec"),
++ s, (int)apr_time_sec(timeout));
+ break;
+ case H2_SESSION_ST_DONE:
+ update_child_status(session, SERVER_CLOSING, "done");
+@@ -1726,8 +1803,6 @@ static void h2_session_ev_no_io(h2_session *session, int arg, const char *msg)
+ * This means we only wait for WINDOW_UPDATE from the
+ * client and can block on READ. */
+ transit(session, "no io (flow wait)", H2_SESSION_ST_IDLE);
+- session->idle_until = apr_time_now() + session->s->timeout;
+- session->keep_sync_until = session->idle_until;
+ /* Make sure we have flushed all previously written output
+ * so that the client will react. */
+ if (h2_conn_io_flush(&session->io) != APR_SUCCESS) {
+@@ -1738,12 +1813,7 @@ static void h2_session_ev_no_io(h2_session *session, int arg, const char *msg)
+ }
+ else if (session->local.accepting) {
+ /* When we have no streams, but accept new, switch to idle */
+- apr_time_t now = apr_time_now();
+ transit(session, "no io (keepalive)", H2_SESSION_ST_IDLE);
+- session->idle_until = (session->remote.emitted_count?
+- session->s->keep_alive_timeout :
+- session->s->timeout) + now;
+- session->keep_sync_until = now + apr_time_from_sec(1);
+ }
+ else {
+ /* We are no longer accepting new streams and there are
+@@ -1758,12 +1828,25 @@ static void h2_session_ev_no_io(h2_session *session, int arg, const char *msg)
+ }
+ }
+
+-static void h2_session_ev_data_read(h2_session *session, int arg, const char *msg)
++static void h2_session_ev_frame_rcvd(h2_session *session, int arg, const char *msg)
++{
++ switch (session->state) {
++ case H2_SESSION_ST_IDLE:
++ case H2_SESSION_ST_WAIT:
++ transit(session, "frame received", H2_SESSION_ST_BUSY);
++ break;
++ default:
++ /* nop */
++ break;
++ }
++}
++
++static void h2_session_ev_stream_change(h2_session *session, int arg, const char *msg)
+ {
+ switch (session->state) {
+ case H2_SESSION_ST_IDLE:
+ case H2_SESSION_ST_WAIT:
+- transit(session, "data read", H2_SESSION_ST_BUSY);
++ transit(session, "stream change", H2_SESSION_ST_BUSY);
+ break;
+ default:
+ /* nop */
+@@ -1803,16 +1886,6 @@ static void h2_session_ev_pre_close(h2_session *session, int arg, const char *ms
+ static void ev_stream_open(h2_session *session, h2_stream *stream)
+ {
+ h2_iq_append(session->in_process, stream->id);
+- switch (session->state) {
+- case H2_SESSION_ST_IDLE:
+- if (session->open_streams == 1) {
+- /* enter timeout, since we have a stream again */
+- session->idle_until = (session->s->timeout + apr_time_now());
+- }
+- break;
+- default:
+- break;
+- }
+ }
+
+ static void ev_stream_closed(h2_session *session, h2_stream *stream)
+@@ -1825,11 +1898,6 @@ static void ev_stream_closed(h2_session *session, h2_stream *stream)
+ }
+ switch (session->state) {
+ case H2_SESSION_ST_IDLE:
+- if (session->open_streams == 0) {
+- /* enter keepalive timeout, since we no longer have streams */
+- session->idle_until = (session->s->keep_alive_timeout
+- + apr_time_now());
+- }
+ break;
+ default:
+ break;
+@@ -1887,6 +1955,7 @@ static void on_stream_state_enter(void *ctx, h2_stream *stream)
+ default:
+ break;
+ }
++ dispatch_event(session, H2_SESSION_EV_STREAM_CHANGE, 0, "stream state change");
+ }
+
+ static void on_stream_event(void *ctx, h2_stream *stream,
+@@ -1945,8 +2014,8 @@ static void dispatch_event(h2_session *session, h2_session_event_t ev,
+ case H2_SESSION_EV_NO_IO:
+ h2_session_ev_no_io(session, arg, msg);
+ break;
+- case H2_SESSION_EV_DATA_READ:
+- h2_session_ev_data_read(session, arg, msg);
++ case H2_SESSION_EV_FRAME_RCVD:
++ h2_session_ev_frame_rcvd(session, arg, msg);
+ break;
+ case H2_SESSION_EV_NGH2_DONE:
+ h2_session_ev_ngh2_done(session, arg, msg);
+@@ -1957,6 +2026,9 @@ static void dispatch_event(h2_session *session, h2_session_event_t ev,
+ case H2_SESSION_EV_PRE_CLOSE:
+ h2_session_ev_pre_close(session, arg, msg);
+ break;
++ case H2_SESSION_EV_STREAM_CHANGE:
++ h2_session_ev_stream_change(session, arg, msg);
++ break;
+ default:
+ ap_log_cerror(APLOG_MARK, APLOG_TRACE1, 0, session->c,
+ H2_SSSN_MSG(session, "unknown event %d"), ev);
+@@ -1990,13 +2062,15 @@ apr_status_t h2_session_process(h2_session *session, int async)
+ apr_status_t status = APR_SUCCESS;
+ conn_rec *c = session->c;
+ int rv, mpm_state, trace = APLOGctrace3(c);
+-
++ apr_time_t now;
++
+ if (trace) {
+ ap_log_cerror( APLOG_MARK, APLOG_TRACE3, status, c,
+ H2_SSSN_MSG(session, "process start, async=%d"), async);
+ }
+
+ while (session->state != H2_SESSION_ST_DONE) {
++ now = apr_time_now();
+ session->have_read = session->have_written = 0;
+
+ if (session->local.accepting
+@@ -2034,39 +2108,42 @@ apr_status_t h2_session_process(h2_session *session, int async)
+ break;
+
+ case H2_SESSION_ST_IDLE:
+- /* We trust our connection into the default timeout/keepalive
+- * handling of the core filters/mpm iff:
+- * - keep_sync_until is not set
+- * - we have an async mpm
+- * - we have no open streams to process
+- * - we are not sitting on a Upgrade: request
+- * - we already have seen at least one request
+- */
+- if (!session->keep_sync_until && async && !session->open_streams
+- && !session->r && session->remote.emitted_count) {
++ if (session->idle_until && (apr_time_now() + session->idle_delay) > session->idle_until) {
++ ap_log_cerror( APLOG_MARK, APLOG_TRACE1, status, c,
++ H2_SSSN_MSG(session, "idle, timeout reached, closing"));
++ if (session->idle_delay) {
++ apr_table_setn(session->c->notes, "short-lingering-close", "1");
++ }
++ dispatch_event(session, H2_SESSION_EV_CONN_TIMEOUT, 0, "timeout");
++ goto out;
++ }
++
++ if (session->idle_delay) {
++ /* we are less interested in spending time on this connection */
++ ap_log_cerror( APLOG_MARK, APLOG_TRACE2, status, c,
++ H2_SSSN_MSG(session, "session is idle (%ld ms), idle wait %ld sec left"),
++ (long)apr_time_as_msec(session->idle_delay),
++ (long)apr_time_sec(session->idle_until - now));
++ apr_sleep(session->idle_delay);
++ session->idle_delay = 0;
++ }
++
++ h2_conn_io_flush(&session->io);
++ if (async && !session->r && (now > session->idle_sync_until)) {
+ if (trace) {
+ ap_log_cerror(APLOG_MARK, APLOG_TRACE3, status, c,
+ H2_SSSN_MSG(session,
+ "nonblock read, %d streams open"),
+ session->open_streams);
+ }
+- h2_conn_io_flush(&session->io);
+ status = h2_session_read(session, 0);
+
+ if (status == APR_SUCCESS) {
+ session->have_read = 1;
+- dispatch_event(session, H2_SESSION_EV_DATA_READ, 0, NULL);
+ }
+- else if (APR_STATUS_IS_EAGAIN(status)
+- || APR_STATUS_IS_TIMEUP(status)) {
+- if (apr_time_now() > session->idle_until) {
+- dispatch_event(session,
+- H2_SESSION_EV_CONN_TIMEOUT, 0, NULL);
+- }
+- else {
+- status = APR_EAGAIN;
+- goto out;
+- }
++ else if (APR_STATUS_IS_EAGAIN(status) || APR_STATUS_IS_TIMEUP(status)) {
++ status = APR_EAGAIN;
++ goto out;
+ }
+ else {
+ ap_log_cerror(APLOG_MARK, APLOG_DEBUG, status, c,
+@@ -2078,7 +2155,6 @@ apr_status_t h2_session_process(h2_session *session, int async)
+ }
+ else {
+ /* make certain, we send everything before we idle */
+- h2_conn_io_flush(&session->io);
+ if (trace) {
+ ap_log_cerror(APLOG_MARK, APLOG_TRACE3, status, c,
+ H2_SSSN_MSG(session,
+@@ -2090,7 +2166,6 @@ apr_status_t h2_session_process(h2_session *session, int async)
+ */
+ status = h2_mplx_idle(session->mplx);
+ if (status == APR_EAGAIN) {
+- dispatch_event(session, H2_SESSION_EV_DATA_READ, 0, NULL);
+ break;
+ }
+ else if (status != APR_SUCCESS) {
+@@ -2101,33 +2176,11 @@ apr_status_t h2_session_process(h2_session *session, int async)
+ status = h2_session_read(session, 1);
+ if (status == APR_SUCCESS) {
+ session->have_read = 1;
+- dispatch_event(session, H2_SESSION_EV_DATA_READ, 0, NULL);
+ }
+ else if (status == APR_EAGAIN) {
+ /* nothing to read */
+ }
+ else if (APR_STATUS_IS_TIMEUP(status)) {
+- apr_time_t now = apr_time_now();
+- if (now > session->keep_sync_until) {
+- /* if we are on an async mpm, now is the time that
+- * we may dare to pass control to it. */
+- session->keep_sync_until = 0;
+- }
+- if (now > session->idle_until) {
+- if (trace) {
+- ap_log_cerror(APLOG_MARK, APLOG_TRACE3, status, c,
+- H2_SSSN_MSG(session,
+- "keepalive timeout"));
+- }
+- dispatch_event(session,
+- H2_SESSION_EV_CONN_TIMEOUT, 0, "timeout");
+- }
+- else if (trace) {
+- ap_log_cerror(APLOG_MARK, APLOG_TRACE3, status, c,
+- H2_SSSN_MSG(session,
+- "keepalive, %f sec left"),
+- (session->idle_until - now) / 1000000.0f);
+- }
+ /* continue reading handling */
+ }
+ else if (APR_STATUS_IS_ECONNABORTED(status)
+@@ -2145,6 +2198,18 @@ apr_status_t h2_session_process(h2_session *session, int async)
+ dispatch_event(session, H2_SESSION_EV_CONN_ERROR, 0, "error");
+ }
+ }
++ if (nghttp2_session_want_write(session->ngh2)) {
++ ap_update_child_status(session->c->sbh, SERVER_BUSY_WRITE, NULL);
++ status = h2_session_send(session);
++ if (status == APR_SUCCESS) {
++ status = h2_conn_io_flush(&session->io);
++ }
++ if (status != APR_SUCCESS) {
++ dispatch_event(session, H2_SESSION_EV_CONN_ERROR,
++ H2_ERR_INTERNAL_ERROR, "writing");
++ break;
++ }
++ }
+ break;
+
+ case H2_SESSION_ST_BUSY:
+@@ -2154,7 +2219,6 @@ apr_status_t h2_session_process(h2_session *session, int async)
+ status = h2_session_read(session, 0);
+ if (status == APR_SUCCESS) {
+ session->have_read = 1;
+- dispatch_event(session, H2_SESSION_EV_DATA_READ, 0, NULL);
+ }
+ else if (status == APR_EAGAIN) {
+ /* nothing to read */
+@@ -2218,7 +2282,7 @@ apr_status_t h2_session_process(h2_session *session, int async)
+ session->iowait);
+ if (status == APR_SUCCESS) {
+ session->wait_us = 0;
+- dispatch_event(session, H2_SESSION_EV_DATA_READ, 0, NULL);
++ dispatch_event(session, H2_SESSION_EV_STREAM_CHANGE, 0, NULL);
+ }
+ else if (APR_STATUS_IS_TIMEUP(status)) {
+ /* go back to checking all inputs again */
+diff --git a/modules/http2/h2_session.h b/modules/http2/h2_session.h
+index 486938b009..df2a862445 100644
+--- a/modules/http2/h2_session.h
++++ b/modules/http2/h2_session.h
+@@ -66,10 +66,11 @@ typedef enum {
+ H2_SESSION_EV_PROTO_ERROR, /* protocol error */
+ H2_SESSION_EV_CONN_TIMEOUT, /* connection timeout */
+ H2_SESSION_EV_NO_IO, /* nothing has been read or written */
+- H2_SESSION_EV_DATA_READ, /* connection data has been read */
++ H2_SESSION_EV_FRAME_RCVD, /* a frame has been received */
+ H2_SESSION_EV_NGH2_DONE, /* nghttp2 wants neither read nor write anything */
+ H2_SESSION_EV_MPM_STOPPING, /* the process is stopping */
+ H2_SESSION_EV_PRE_CLOSE, /* connection will close after this */
++ H2_SESSION_EV_STREAM_CHANGE, /* a stream (state/input/output) changed */
+ } h2_session_event_t;
+
+ typedef struct h2_session {
+@@ -118,7 +119,9 @@ typedef struct h2_session {
+ apr_size_t max_stream_mem; /* max buffer memory for a single stream */
+
+ apr_time_t idle_until; /* Time we shut down due to sheer boredom */
+- apr_time_t keep_sync_until; /* Time we sync wait until passing to async mpm */
++ apr_time_t idle_sync_until; /* Time we sync wait until keepalive handling kicks in */
++ apr_size_t idle_frames; /* number of rcvd frames that kept session in idle state */
++ apr_interval_time_t idle_delay; /* Time we delay processing rcvd frames in idle state */
+
+ apr_bucket_brigade *bbtmp; /* brigade for keeping temporary data */
+ struct apr_thread_cond_t *iowait; /* our cond when trywaiting for data */
+diff --git a/modules/http2/h2_version.h b/modules/http2/h2_version.h
+index 5c53abd575..2ac718fc0f 100644
+--- a/modules/http2/h2_version.h
++++ b/modules/http2/h2_version.h
+@@ -27,7 +27,7 @@
+ * @macro
+ * Version number of the http2 module as c string
+ */
+-#define MOD_HTTP2_VERSION "1.10.20"
++#define MOD_HTTP2_VERSION "1.11.0"
+
+ /**
+ * @macro
+@@ -35,7 +35,7 @@
+ * release. This is a 24 bit number with 8 bits for major number, 8 bits
+ * for minor and 8 bits for patch. Version 1.2.3 becomes 0x010203.
+ */
+-#define MOD_HTTP2_VERSION_NUM 0x010a14
++#define MOD_HTTP2_VERSION_NUM 0x010b00
+
+
+ #endif /* mod_h2_h2_version_h */
+--
+2.17.1
+
diff --git a/meta-webserver/recipes-httpd/apache2/apache2_2.4.34.bb b/meta-webserver/recipes-httpd/apache2/apache2_2.4.34.bb
index a92ec5458..a87e3847f 100644
--- a/meta-webserver/recipes-httpd/apache2/apache2_2.4.34.bb
+++ b/meta-webserver/recipes-httpd/apache2/apache2_2.4.34.bb
@@ -16,6 +16,7 @@ SRC_URI = "${APACHE_MIRROR}/httpd/httpd-${PV}.tar.bz2 \
file://httpd-2.4.3-fix-race-issue-of-dir-install.patch \
file://0001-configure-use-pkg-config-for-PCRE-detection.patch \
file://configure-allow-to-disable-selinux-support.patch \
+ file://CVE-2018-11763.patch \
file://init \
file://apache2-volatile.conf \
file://apache2.service \
--
2.17.1
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