Merge pull request #3564 from bluca/news

CVE-2019-13132

NEWS

 0MQ version 4.3.2 stable, released on 20xx/xx/xx
 ================================================
 
+* CVE-2019-13132: a remote, unauthenticated client connecting to a
+  libzmq application, running with a socket listening with CURVE
+  encryption/authentication enabled, may cause a stack overflow and
+  overwrite the stack with arbitrary data, due to a buffer overflow in
+  the library. Users running public servers with the above configuration
+  are highly encouraged to upgrade as soon as possible, as there are no
+  known mitigations. All versions from 4.0.0 and upwards are affected.
+  Thank you Fang-Pen Lin for finding the issue and reporting it!
+
+* New DRAFT (see NEWS for 4.2.0) zmq_socket_monitor_versioned API that supports
+  a versioned monitoring events protocol as a parameter. Passing 1 results in
+  the same behaviour as zmq_socket_monitor.
+  Version 2 of the events protocol allows new events, new metadata, different
+  socket types for the monitors and more. It is described in details in
+  doc/zmq_socket_monitor_versioned.txt
+
+* New DRAFT (see NEWS for 4.2.0) zmq_socket_monitor_pipes_stats that triggers
+  a new ZMQ_EVENT_PIPES_STATS to be delivered via zmq_socket_monitor_versioned
+  v2 API, which contains the current status of all the queues owned by the
+  monitored socket. See doc/zmq_socket_monitor_versioned.txt for details.
+
+* New DRAFT (see NEWS for 4.2.0) zmq_poller_fd that returns the FD of a thread
+  safe socket. See doc/zmq_poller.txt for details.
+
+* New DRAFT (see NEWS for 4.2.0) socket options:
+  - ZMQ_XPUB_MANUAL_LAST_VALUE is similar to ZMQ_XPUB_MANUAL but allows to avoid
+    duplicates when using last value caching.
+  - ZMQ_SOCKS_USERNAME and ZMQ_SOCKS_PASSWORD that implement SOCKS5 proxy
+    authentication.
+  See doc/zmq_setsockopt.txt and doc/zmq_getsockopt.txt for details.
+
+* Implemented background thread names for Windows, when the Visual Studio
+  debugger is being used.
+
+* Fixed #3358 - test_security_zap failing due to SIGBUS on SPARC64, hard-coded
+                IPC socket binds in tests cause race conditions
+
+* Fixed #3361 - enabling GSSAPI support (when using autools) does not work due
+                to regression introduced in 4.2.3
+
+* Fixed #3362 - remove documentation for ZMQ_THREAD_PRIORITY context option
+                getter, it's not implemented
+
+* Fixed #3363 - tests fail to build due to stricter compiler printf validation
+                in new versions of GCC
+
+* Fixed #3367 - try to infer cacheline size at build time, first with
+                getconf LEVEL1_DCACHE_LINESIZE, and then by reading
+                /sys/devices/system/cpu/cpu0/cache/index0/coherency_line_size
+                (autoconf only), and only then falling back to the previous
+                default of 64 bytes. Avoids false sharing on POWER and s390x.
+                Import ax_func_posix_memalign.m4 as a more reliable check for
+                posix_memalign presence on some unix platforms.
+                Prefer c++11 atomic primitives to compiler intrinsics, when
+                both are available, as the former is more reliable.
+                Set test_pair_ipc and test_rebind_ipc to XFAIL on GNU/Hurd due
+                to non-functioning getsockname on AF_UNIX.
+
+* Fixed #3370 - Make queue length and HWM state observable
+
+* Fixed #3373 - performance regression in zmq_poll on CentOS 6/7
+
+* Fixed #3375 - assign names to all pthreads created by the library to ease
+                debugging
+
+* Fixed #3376 - assigned random TIPC port is not returned by ZMQ_LAST_ENDPOINT
+
+* Fixed #3385 - TCP port in ZMQ_LAST_ENDPOINT depends on global locale
+
+* Fixed #3404 - use std::condition_variable_any when possible
+
+* Fixed #3436 - reconnect interval exponential backoff and may lead to integer
+                overflows
+
+* Fixed #3440 - improve zmq_proxy performance by batching of up to 1000
+                consecutive messages (if any) and add perf/proxy_thr tool
+
+* Fixed #3451 - fix support of /dev/poll on Solaris
+
+* Fixed #3452 - strnlen may not be available
+
+* Fixed #1462 - test failure in test_filter_ipc due to invalid system groups
+
+* Fixed #3269 - Boost.ASIO integration stopped working with v4.3.0
+
+* Fixed #3479 - ZeroMQ does not build for QNX 6.6 with CMake
+
+* Fixed #3481 - add <ios> include to fix uClibc++ compilation
+
+* Fixed #3491 - build broken on Fedora 30
+
+* Fixed #3494 - ZeroMQConfig.cmake fails if shared libraries are not built
+
+* Fixed #3498 - syntax error on Windows related to socket descriptor type
+
+* Fixed #3500 - PLAIN HELLO message incorrectly uses WELCOME literal, regression
+                introduced in 4.3.0
+
+* Fixed #3517 - configure errors because of syntax errors in the use of test
+                shell command
+
+* Fixed #3521 - document how to achieve high performance with the PGM transport
+
+* Fixed #3526 - failure case behavior unclear in zmq_msg_send documentation
+
+* Fixed #3537 - fix build on z/OS by using pthread_equal instead of comparing
+                variables directly
+
+* Fixed #3546 - CMake links with librt on MinGW which is not available
+
+* Many coding style, duplication, testing and static analysis improvements.
+
+
 0MQ version 4.3.1 stable, released on 2019/01/12
 ================================================
 

doc/zmq_getsockopt.txt

@@ -224,7 +224,7 @@ Applicable socket types:: all, when using TCP or IPC transports
 
 
 ZMQ_GSSAPI_SERVER: Retrieve current GSSAPI server role
-~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
 Returns the 'ZMQ_GSSAPI_SERVER' option, if any, previously set on the socket.
 
 [horizontal]
@@ -744,7 +744,7 @@ Applicable socket types:: all, when using TCP transports.
 
 
 ZMQ_TCP_KEEPALIVE_IDLE: Override TCP_KEEPIDLE (or TCP_KEEPALIVE on some OS)
-~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
 Override 'TCP_KEEPIDLE'(or 'TCP_KEEPALIVE' on some OS) socket option (where
 supported by OS). The default value of `-1` means to skip any overrides and
 leave it to OS default.
@@ -923,7 +923,7 @@ Applicable socket types:: ZMQ_ROUTER
 
 
 ZMQ_IN_BATCH_SIZE: Maximal receive batch size
-~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
 Gets the maximal amount of messages that can be received in a single
 'recv' system call.
 
@@ -939,7 +939,7 @@ Applicable socket types:: All, when using TCP, IPC, PGM or NORM transport.
 
 
 ZMQ_OUT_BATCH_SIZE: Maximal send batch size
-~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
 Gets the maximal amount of messages that can be sent in a single
 'send' system call.
 

packaging/debian/changelog

-zeromq (4.3.0) UNRELEASED; urgency=low
+zeromq (4.3.2) UNRELEASED; urgency=low
 
   * Initial packaging.
 

packaging/debian/zeromq.dsc.obs

@@ -2,7 +2,7 @@ Format: 3.0 (quilt)
 Source: zeromq
 Binary: libzmq5, libzmq3-dev, libzmq5-dbg
 Architecture: any
-Version: 4.3.0
+Version: 4.3.2
 Maintainer: libzmq Developers <zeromq-dev@lists.zeromq.org>
 Homepage: http://www.zeromq.org/
 Standards-Version: 3.9.8

packaging/redhat/zeromq.spec

@@ -10,7 +10,7 @@
 %endif
 %define lib_name libzmq5
 Name:          zeromq
-Version:       4.3.0
+Version:       4.3.2
 Release:       1%{?dist}
 Summary:       The ZeroMQ messaging library
 Group:         Applications/Internet

src/curve_server.cpp

@@ -327,8 +327,12 @@ int zmq::curve_server_t::process_initiate (msg_t *msg_)
     const size_t clen = (size - 113) + crypto_box_BOXZEROBYTES;
 
     uint8_t initiate_nonce[crypto_box_NONCEBYTES];
-    uint8_t initiate_plaintext[crypto_box_ZEROBYTES + 128 + 256];
-    uint8_t initiate_box[crypto_box_BOXZEROBYTES + 144 + 256];
+    uint8_t *initiate_plaintext =
+      static_cast<uint8_t *> (malloc (crypto_box_ZEROBYTES + clen));
+    alloc_assert (initiate_plaintext);
+    uint8_t *initiate_box =
+      static_cast<uint8_t *> (malloc (crypto_box_BOXZEROBYTES + clen));
+    alloc_assert (initiate_box);
 
     //  Open Box [C + vouch + metadata](C'->S')
     memset (initiate_box, 0, crypto_box_BOXZEROBYTES);
@@ -339,6 +343,8 @@ int zmq::curve_server_t::process_initiate (msg_t *msg_)
     memcpy (initiate_nonce + 16, initiate + 105, 8);
     cn_peer_nonce = get_uint64 (initiate + 105);
 
+    const uint8_t *client_key = initiate_plaintext + crypto_box_ZEROBYTES;
+
     rc = crypto_box_open (initiate_plaintext, initiate_box, clen,
                           initiate_nonce, _cn_client, _cn_secret);
     if (rc != 0) {
@@ -346,11 +352,10 @@ int zmq::curve_server_t::process_initiate (msg_t *msg_)
         session->get_socket ()->event_handshake_failed_protocol (
           session->get_endpoint (), ZMQ_PROTOCOL_ERROR_ZMTP_CRYPTOGRAPHIC);
         errno = EPROTO;
-        return -1;
+        rc = -1;
+        goto exit;
     }
 
-    const uint8_t *client_key = initiate_plaintext + crypto_box_ZEROBYTES;
-
     uint8_t vouch_nonce[crypto_box_NONCEBYTES];
     uint8_t vouch_plaintext[crypto_box_ZEROBYTES + 64];
     uint8_t vouch_box[crypto_box_BOXZEROBYTES + 80];
@@ -371,7 +376,8 @@ int zmq::curve_server_t::process_initiate (msg_t *msg_)
         session->get_socket ()->event_handshake_failed_protocol (
           session->get_endpoint (), ZMQ_PROTOCOL_ERROR_ZMTP_CRYPTOGRAPHIC);
         errno = EPROTO;
-        return -1;
+        rc = -1;
+        goto exit;
     }
 
     //  What we decrypted must be the client's short-term public key
@@ -383,7 +389,8 @@ int zmq::curve_server_t::process_initiate (msg_t *msg_)
         session->get_socket ()->event_handshake_failed_protocol (
           session->get_endpoint (), ZMQ_PROTOCOL_ERROR_ZMTP_KEY_EXCHANGE);
         errno = EPROTO;
-        return -1;
+        rc = -1;
+        goto exit;
     }
 
     //  Precompute connection secret from client key
@@ -405,7 +412,7 @@ int zmq::curve_server_t::process_initiate (msg_t *msg_)
             //  is attempted)
             rc = receive_and_process_zap_reply ();
             if (rc == -1)
-                return -1;
+                goto exit;
         } else if (!options.zap_enforce_domain) {
             //  This supports the Stonehouse pattern (encryption without
             //  authentication) in legacy mode (domain set but no handler).
@@ -413,15 +420,21 @@ int zmq::curve_server_t::process_initiate (msg_t *msg_)
         } else {
             session->get_socket ()->event_handshake_failed_no_detail (
               session->get_endpoint (), EFAULT);
-            return -1;
+            rc = -1;
+            goto exit;
         }
     } else {
         //  This supports the Stonehouse pattern (encryption without authentication).
         state = sending_ready;
     }
 
-    return parse_metadata (initiate_plaintext + crypto_box_ZEROBYTES + 128,
-                           clen - crypto_box_ZEROBYTES - 128);
+    rc = parse_metadata (initiate_plaintext + crypto_box_ZEROBYTES + 128,
+                         clen - crypto_box_ZEROBYTES - 128);
+
+exit:
+    free (initiate_plaintext);
+    free (initiate_box);
+    return rc;
 }
 
 int zmq::curve_server_t::produce_ready (msg_t *msg_)