Ubuntu Security Notice USN-338-1 - Dmitri Lenev discovered that arguments of setuid SQL functions were evaluated in the security context of the functions' definer instead of its caller. An authenticated user with the privilege to call such a function could exploit this to execute arbitrary statements with the privileges of the definer of that function. Peter Gulutzan reported a potentially confusing situation of the MERGE table engine. If an user creates a merge table, and the administrator later revokes privileges on the original table only (without changing the privileges on the merge table), that user still has access to the data by using the merge table. This is intended behavior, but might be undesirable in some installations; this update introduces a new server option "--skip-merge" which disables the MERGE engine completely.
39b2534095845f961ec9fef7935d84281c4fe34a2f44878fbacbbc06abb7879cMandriva Linux Security Advisory MDKSA-2006-149 - MySQL 4.1 before 4.1.21 and 5.0 before 5.0.24 allows a local user to access a table through a previously created MERGE table, even after the user's privileges are revoked for the original table, which might violate intended security policy. MySQL 4.1 before 4.1.21, 5.0 before 5.0.25, and 5.1 before 5.1.12, when run on case-sensitive filesystems, allows remote authenticated users to create or access a database when the database name differs only in case from a database for which they have permissions.
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