The PL/Tcl implementation in PostgreSQL 7.4 before 7.4.29, 8.0 before 8.0.25, 8.1 before 8.1.21, 8.2 before 8.2.17, 8.3 before 8.3.11, 8.4 before 8.4.4, and 9.0 Beta before 9.0 Beta 2 loads Tcl code from the pltcl_modules table regardless of the table's ownership and permissions, which allows remote authenticated users, with database-creation privileges, to execute arbitrary Tcl code by creating this table and inserting a crafted Tcl script.

PostgreSQL 7.4 before 7.4.29, 8.0 before 8.0.25, 8.1 before 8.1.21, 8.2 before 8.2.17, 8.3 before 8.3.11, and 8.4 before 8.4.4 does not properly check privileges during certain RESET ALL operations, which allows remote authenticated users to remove arbitrary parameter settings via a (1) ALTER USER or (2) ALTER DATABASE statement.

PostgreSQL 7.4 before 7.4.29, 8.0 before 8.0.25, 8.1 before 8.1.21, 8.2 before 8.2.17, 8.3 before 8.3.11, 8.4 before 8.4.4, and 9.0 Beta before 9.0 Beta 2 does not properly restrict PL/perl procedures, which allows remote authenticated users, with database-creation privileges, to execute arbitrary Perl code via a crafted script, related to the Safe module (aka Safe.pm) for Perl. NOTE: some sources report that this issue is the same as CVE-2010-1447.

Integer overflow in src/backend/executor/nodeHash.c in PostgreSQL 8.4.1 and earlier, and 8.5 through 8.5alpha2, allows remote authenticated users to cause a denial of service (daemon crash) via a SELECT statement with many LEFT JOIN clauses, related to certain hashtable size calculations.

PostgreSQL 7.4.x before 7.4.27, 8.0.x before 8.0.23, 8.1.x before 8.1.19, 8.2.x before 8.2.15, 8.3.x before 8.3.9, and 8.4.x before 8.4.2 does not properly handle a '\0' character in a domain name in the subject's Common Name (CN) field of an X.509 certificate, which (1) allows man-in-the-middle attackers to spoof arbitrary SSL-based PostgreSQL servers via a crafted server certificate issued by a legitimate Certification Authority, and (2) allows remote attackers to bypass intended client-hostname restrictions via a crafted client certificate issued by a legitimate Certification Authority, a related issue to CVE-2009-2408.

PostgreSQL 7.4.x before 7.4.27, 8.0.x before 8.0.23, 8.1.x before 8.1.19, 8.2.x before 8.2.15, 8.3.x before 8.3.9, and 8.4.x before 8.4.2 does not properly manage session-local state during execution of an index function by a database superuser, which allows remote authenticated users to gain privileges via a table with crafted index functions, as demonstrated by functions that modify (1) search_path or (2) a prepared statement, a related issue to CVE-2007-6600 and CVE-2009-3230.

The core server component in PostgreSQL 8.4 before 8.4.1, 8.3 before 8.3.8, 8.2 before 8.2.14, 8.1 before 8.1.18, 8.0 before 8.0.22, and 7.4 before 7.4.26 does not use the appropriate privileges for the (1) RESET ROLE and (2) RESET SESSION AUTHORIZATION operations, which allows remote authenticated users to gain privileges. NOTE: this is due to an incomplete fix for CVE-2007-6600.

The core server component in PostgreSQL 8.4 before 8.4.1, 8.3 before 8.3.8, and 8.2 before 8.2.14 allows remote authenticated users to cause a denial of service (backend shutdown) by "re-LOAD-ing" libraries from a certain plugins directory.