DESCRIPTION:
============
There can be issues if the packets sent by the server
are not proper. Certain checks should be performed at the
client side while unpacking fields data.
FIX:
====
Check for the appropriate fields data and error out if it
is not present.
RB: 23601
Restore the detection of default charset in command line utilities.
It worked up to 10.1, but was broken by Connector/C.
Moved code for detection of default charset from sql-common/client.c
to mysys, and make command line utilities to use this code if charset
was not specified on the command line.
now we can afford it. Fix -Werror errors. Note:
* old gcc is bad at detecting uninit variables, disable it.
* time_t is int or long, cast it for printf's
Disable LOAD DATA LOCAL INFILE suport by default and
auto-enable it for the duration of one query, if the query
string starts with the word "load". In all other cases the application
should enable LOAD DATA LOCAL INFILE support explicitly.
We do not accept:
1. We did not have this problem (fixed earlier and better)
d982e717ab Bug#27510150: MYSQLDUMP FAILS FOR SPECIFIC --WHERE CLAUSES
2. We do not have such options (an DBUG_ASSERT put just in case)
bbc2e37fe4 Bug#27759871: BACKRONYM ISSUE IS STILL IN MYSQL 5.7
3. Serg fixed it in other way in this release:
e48d775c6f Bug#27980823: HEAP OVERFLOW VULNERABILITIES IN MYSQL CLIENT LIBRARY
Description:- Client applications establishes connection to
server, which does not support SSL, via TCP even when SSL is
enforced via MYSQL_OPT_SSL_MODE or MYSQL_OPT_SSL_ENFORCE or
MYSQL_OPT_SSL_VERIFY_SERVER_CERT.
Analysis:- There exist no error handling for catching client
applications which enforces SSL connection to connect to a
server which does not support SSL.
Fix:- Error handling is done to catch above mentioned
scenarios.
(Currently) LibreSSL doesn't calculate the string length of the hostname
that's passed to X509_check_host automatically in case namelen/chklen is 0.
This causes server certificate validation to fail when building MariaDB with
LibreSSL.
The proposed fix makes MariaDB determine the string length passed to
X509_check_host. As there are no ill side-effects (OpenSSL's X509_check_host
also simply calls strlen if namelen == 0, see also X509_check_host(3)), this
wasn't wrapped in any #ifdef like constructs.
Please see here for a proposed patch to modify LibreSSL's behavior:
https://github.com/libressl-portable/openbsd/pull/87
Description:- Mysql client crashes when trying to connect
to a fake server which is sending incorrect packets.
Analysis:- Mysql client crashes when it tries to read
server version details.
Fix:- A check is added in "red_one_row()".
find_type_or_exit() client helper did exit(1) on error, exit(1) moved to
clients.
mysql_read_default_options() did exit(1) on error, error is passed through and
handled now.
my_str_malloc_default() did exit(1) on error, replaced my_str_ allocator
functions with normal my_malloc()/my_realloc()/my_free().
sql_connect.cc did many exit(1) on hash initialisation failure. Removed error
check since my_hash_init() never fails.
my_malloc() did exit(1) on error. Replaced with abort().
my_load_defaults() did exit(1) on error, replaced with return 2.
my_load_defaults() still does exit(0) when invoked with --print-defaults.