Prevent privilege escalation in explicit calls to PL validators.
The primary role of PL validators is to be called implicitly during
CREATE FUNCTION, but they are also normal functions that a user can call
explicitly. Add a permissions check to each validator to ensure that a
user cannot use explicit validator calls to achieve things he could not
otherwise achieve. Back-patch to 8.4 (all supported versions).
Non-core procedural language extensions ought to make the same two-line
change to their own validators.
Andres Freund, reviewed by Tom Lane and Noah Misch.
Security: CVE-2014-0061
Branch
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REL9_0_STABLE
Details
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http://git.postgresql.org/pg/commitdiff/c0ac4c75ff048b8ff6d8436946e9c414c2b64f94
Modified Files
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doc/src/sgml/plhandler.sgml | 5 ++-
src/backend/catalog/pg_proc.c | 9 ++++
src/backend/commands/functioncmds.c | 1 -
src/backend/utils/fmgr/fmgr.c | 84 +++++++++++++++++++++++++++++++++++
src/include/fmgr.h | 1 +
src/pl/plperl/plperl.c | 3 ++
src/pl/plpgsql/src/pl_handler.c | 3 ++
7 files changed, 104 insertions(+), 2 deletions(-)