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pgsql: Support explicit placement of the temporary-table schema within

From: tgl(at)postgresql(dot)org (Tom Lane)
To: pgsql-committers(at)postgresql(dot)org
Subject: pgsql: Support explicit placement of the temporary-table schema within
Date: 2007-04-20 02:38:05
Message-ID: 20070420023805.194EF9FB3E7@postgresql.org (view raw or flat)
Thread:
Lists: pgsql-committers
Log Message:
-----------
Support explicit placement of the temporary-table schema within search_path.
This is needed to allow a security-definer function to set a truly secure
value of search_path.  Without it, a malicious user can use temporary objects
to execute code with the privileges of the security-definer function.  Even
pushing the temp schema to the back of the search path is not quite good
enough, because a function or operator at the back of the path might still
capture control from one nearer the front due to having a more exact datatype
match.  Hence, disable searching the temp schema altogether for functions and
operators.

Security: CVE-2007-2138

Tags:
----
REL8_1_STABLE

Modified Files:
--------------
    pgsql/doc/src/sgml/ref:
        create_function.sgml (r1.67 -> r1.67.2.1)
        (http://developer.postgresql.org/cvsweb.cgi/pgsql/doc/src/sgml/ref/create_function.sgml.diff?r1=1.67&r2=1.67.2.1)
    pgsql/doc/src/sgml:
        release.sgml (r1.400.2.41 -> r1.400.2.42)
        (http://developer.postgresql.org/cvsweb.cgi/pgsql/doc/src/sgml/release.sgml.diff?r1=1.400.2.41&r2=1.400.2.42)
        config.sgml (r1.36.2.7 -> r1.36.2.8)
        (http://developer.postgresql.org/cvsweb.cgi/pgsql/doc/src/sgml/config.sgml.diff?r1=1.36.2.7&r2=1.36.2.8)
    pgsql/src/backend/catalog:
        aclchk.c (r1.120.2.1 -> r1.120.2.2)
        (http://developer.postgresql.org/cvsweb.cgi/pgsql/src/backend/catalog/aclchk.c.diff?r1=1.120.2.1&r2=1.120.2.2)
        namespace.c (r1.79.2.2 -> r1.79.2.3)
        (http://developer.postgresql.org/cvsweb.cgi/pgsql/src/backend/catalog/namespace.c.diff?r1=1.79.2.2&r2=1.79.2.3)
    pgsql/src/test/regress/expected:
        temp.out (r1.10 -> r1.10.2.1)
        (http://developer.postgresql.org/cvsweb.cgi/pgsql/src/test/regress/expected/temp.out.diff?r1=1.10&r2=1.10.2.1)
    pgsql/src/test/regress/sql:
        temp.sql (r1.6 -> r1.6.2.1)
        (http://developer.postgresql.org/cvsweb.cgi/pgsql/src/test/regress/sql/temp.sql.diff?r1=1.6&r2=1.6.2.1)

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