FreshPorts - VuXML

Michal Prokopiuk reports a privilege escalation in MySQL. The vulnerability causes MySQL, when run on case-sensitive filesystems, to allow remote and local authenticated users to create or access a database when the database name differs only in case from a database for which they have permissions.

ge 5.1 lt 5.1.12

ge 5.0 lt 5.0.25

< 4.1.21

When a user is granted access to a database with a name containing an underscore and the underscore is not escaped then that user might also be able to access other, similarly named, databases on the affected system.

The problem is that the underscore is seen as a wildcard by MySQL and therefore it is possible that an admin might accidently GRANT a user access to multiple databases.

le 3.23.58_3

ge 4.* lt 4.0.21

Dean Ellis reported a denial of service vulnerability in the MySQL server:

Multiple threads ALTERing the same (or different) MERGE tables to change the UNION eventually crash the server or hang the individual threads.

Note that a script demonstrating the problem is included in the MySQL bug report. Attackers that have control of a MySQL account can easily use a modified version of that script during an attack.

le 3.23.58_3

ge 4.* lt 4.0.21

ge 4.1.* lt 4.1.1

The mysql_real_connect function doesn't properly handle DNS replies by copying the IP address into a buffer without any length checking. A specially crafted DNS reply may therefore be used to cause a buffer overflow on affected systems.

Note that whether this issue can be exploitable depends on the system library responsible for the gethostbyname function. The bug finder, Lukasz Wojtow, explaines this with the following words:

In glibc there is a limitation for an IP address to have only 4 bytes (obviously), but generally speaking the length of the address comes with a response for dns query (i know it sounds funny but read rfc1035 if you don't believe). This bug can occur on libraries where gethostbyname function takes length from dns's response

le 3.23.58_3

ge 4.* lt 4.0.21

le 3.23.58_3

ge 4.* lt 4.0.21

A Red Hat advisory reports:

Oleksandr Byelkin discovered that "ALTER TABLE ... RENAME" checked the CREATE/INSERT rights of the old table instead of the new one.

Table access restrictions, on the affected MySQL servers, may accidently or intentially be bypassed due to this bug.

le 3.23.58_3

ge 4.* lt 4.0.21