MySQL: SQL Injection

1. Gentoo Linux Security Advisory

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

Synopsis

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

2. Impact Information

Background

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

Description

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

Impact

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

Workaround

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.

Resolution

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

CVE-2006-2753

Updated June 11, 2006

Summary: This is a Gentoo Linux Security Advisory

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