Mandriva Linux Security Advisory - MySQL 5.x before 5.0.36 allows local users to cause a denial of service (database crash) by performing information_schema table subselects and using ORDER BY to sort a single-row result, which prevents certain structure elements from being initialized and triggers a NULL dereference in the filesort function. This issue does not affect MySQL 5.0.37 in Mandriva Linux 2007.1. The in_decimal::set function in item_cmpfunc.cc in MySQL before 5.0.40, and 5.1 before 5.1.18-beta, allows context-dependent attackers to cause a denial of service (crash) via a crafted IF clause that results in a divide-by-zero error and a NULL pointer dereference. MySQL before 4.1.23, 5.0.x before 5.0.42, and 5.1.x before 5.1.18 does not require the DROP privilege for RENAME TABLE statements, which allows remote authenticated users to rename arbitrary tables.
4cd2dfda3abd3da192347bfa5dc015404e12766bbaff61198e938995406ef8edGentoo Linux Security Advisory GLSA 200705-11 - mu-b discovered a NULL pointer dereference in item_cmpfunc.cc when processing certain types of SQL requests. Sec Consult also discovered another NULL pointer dereference when sorting certain types of queries on the database metadata. Versions less than 5.0.38 are affected.
ca576939c2f74544cd1e9574e4596fa1836ee93bb2aeef2c794307e0b17e4a2bUbuntu Security Notice 440-1 - Stefan Streichbier and B. Mueller of SEC Consult discovered that MySQL subselect queries using "ORDER BY" could be made to crash the MySQL server. An attacker with access to a MySQL instance could cause an intermittent denial of service.
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