USN-32-1: mysql vulnerabilities

Ubuntu Security Notice USN-32-1

25th November, 2004

mysql-dfsg vulnerabilities

A security issue affects these releases of Ubuntu and its derivatives:

  • Ubuntu 4.10


Several vulnerabilities have been discovered in the MySQL database

Lukasz Wojtow discovered a potential buffer overflow in the function
mysql_real_connect(). A malicious name server could send specially
crafted DNS packages which might result in execution of arbitrary code
with the database server's privileges. However, it is believed that
this bug cannot be exploited with the C Standard library (glibc) that
Ubuntu uses. (CAN-2004-0836).

Dean Ellis noticed a flaw that allows an authorized MySQL user to
cause a denial of service (crash or hang) via concurrent execution of
certain statements (ALTER TABLE ... UNION=, FLUSH TABLES) on tables of
type MERGE (CAN-2004-0837)

Some query strings containing a double quote (like MATCH ... AGAINST
(' some " query' IN BOOLEAN MODE) ) that did not have a matching
closing double quote caused a denial of service (server crash). Again,
this is only exploitable by authorized mysql users. (CAN-2004-0956)

If a user was granted privileges to a database with a name containing
an underscore ("_"), the user also gained the ability to grant
privileges to other databases with similar names. (CAN-2004-0957)

Update instructions

The problem can be corrected by updating your system to the following package version:

Ubuntu 4.10:

To update your system, please follow these instructions:



CVE-2004-0836, CVE-2004-0837, CVE-2004-0956, CVE-2004-0957