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If an interactive psql session used \gset when querying a compromised server, the attacker could execute arbitrary code as the operating system account running psql. Using a prefix not found among specially treated variables, e.g. every lowercase string, precluded the attack. Fix by issuing a warning and setting no variable for the column in question. Users wanting the old behavior can use a prefix and then a meta-command like "\set HISTSIZE :prefix_HISTSIZE". Back-patch to 9.5 (all supported versions). Reviewed by Robert Haas. Reported by Nick Cleaton. Security: CVE-2020-25696
PostgreSQL tests ================ This directory contains a variety of test infrastructure as well as some of the tests in PostgreSQL. Not all tests are here -- in particular, there are more in individual contrib/ modules and in src/bin. Not all these tests get run by "make check". Check src/test/Makefile to see which tests get run automatically. authentication/ Tests for authentication (but see also below) examples/ Demonstration programs for libpq that double as regression tests via "make check" isolation/ Tests for concurrent behavior at the SQL level kerberos/ Tests for Kerberos/GSSAPI authentication and encryption ldap/ Tests for LDAP-based authentication locale/ Sanity checks for locale data, encodings, etc mb/ Tests for multibyte encoding (UTF-8) support modules/ Extensions used only or mainly for test purposes, generally not suitable for installing in production databases perl/ Infrastructure for Perl-based TAP tests recovery/ Test suite for recovery and replication regress/ PostgreSQL's main regression test suite, pg_regress ssl/ Tests to exercise and verify SSL certificate handling subscription/ Tests for logical replication