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Bug #11765023: 57934: DOS POSSIBLE SINCE BINARY CASTING DOESN'T

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ADHERE TO MAX_ALLOWED_PACKET

Added a check for max_packet_length in CONVERT(, BINARY|CHAR).
Added a test case.
This commit is contained in:
Georgi Kodinov
2011-03-15 13:19:30 +02:00
parent d8235ef5cc
commit 405f7ca69a
3 changed files with 42 additions and 0 deletions
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15
mysql-test/r/cast.result
View File

@@ -451,4 +451,19 @@ SELECT CONVERT(t2.a USING UTF8) FROM t1, t1 t2 LIMIT 1
1
1
DROP TABLE t1;
#
# Bug #11765023: 57934: DOS POSSIBLE SINCE BINARY CASTING
# DOESN'T ADHERE TO MAX_ALLOWED_PACKET
SET @@GLOBAL.max_allowed_packet=2048;
SELECT CONVERT('a', BINARY(2049));
CONVERT('a', BINARY(2049))
NULL
Warnings:
Warning 1301 Result of cast_as_binary() was larger than max_allowed_packet (2048) - truncated
SELECT CONVERT('a', CHAR(2049));
CONVERT('a', CHAR(2049))
NULL
Warnings:
Warning 1301 Result of cast_as_char() was larger than max_allowed_packet (2048) - truncated
SET @@GLOBAL.max_allowed_packet=default;
End of 5.1 tests

14
mysql-test/t/cast.test
View File

@@ -282,5 +282,19 @@ SELECT 1 FROM
) AS s LIMIT 1;
DROP TABLE t1;
--echo #
--echo # Bug #11765023: 57934: DOS POSSIBLE SINCE BINARY CASTING
--echo # DOESN'T ADHERE TO MAX_ALLOWED_PACKET
SET @@GLOBAL.max_allowed_packet=2048;
# reconnect to make the new max packet size take effect
--connect (newconn, localhost, root,,)
SELECT CONVERT('a', BINARY(2049));
SELECT CONVERT('a', CHAR(2049));
connection default;
disconnect newconn;
SET @@GLOBAL.max_allowed_packet=default;
--echo End of 5.1 tests