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MySQL: SQL Injection


1.  Gentoo Linux Security Advisory

Version Information

Advisory Reference GLSA 200606-13 / MySQL
Release Date June 11, 2006
Latest Revision December 13, 2006: 04
Impact normal
Exploitable remote
Package Vulnerable versions Unaffected versions Architecture(s)
dev-db/mysql < 5.0.22 >= 5.0.22, revision >= 4.1.20, revision >= 4.1.21, revision >= 4.1.22, < 4.1 All supported architectures

Related bugreports: #135076


MySQL is vulnerable to an SQL Injection flaw in the multi-byte encoding process.

2.  Impact Information


MySQL is a popular multi-threaded, multi-user SQL server.


MySQL is vulnerable to an injection flaw in mysql_real_escape() when used with multi-byte characters.


Due to a flaw in the multi-byte character process, an attacker is still able to inject arbitary SQL statements into the MySQL server for execution.

3.  Resolution Information


There are a few workarounds available: NO_BACKSLASH_ESCAPES mode as a workaround for a bug in mysql_real_escape_string(): SET sql_mode='NO_BACKSLASH_ESCAPES'; SET GLOBAL sql_mode='NO_BACKSLASH_ESCAPES'; and server command line options: --sql-mode=NO_BACKSLASH_ESCAPES.


All MySQL users should upgrade to the latest version:

Code Listing 3.1: Resolution

# emerge --sync
# emerge --ask --oneshot --verbose ">=dev-db/mysql-4.1.20"

4.  References


Page updated June 11, 2006

Summary: This is a Gentoo Linux Security Advisory

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