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582edc369c
This makes the client programs behave as documented regardless of the connect-time search_path and regardless of user-created objects. Today, a malicious user with CREATE permission on a search_path schema can take control of certain of these clients' queries and invoke arbitrary SQL functions under the client identity, often a superuser. This is exploitable in the default configuration, where all users have CREATE privilege on schema "public". This changes behavior of user-defined code stored in the database, like pg_index.indexprs and pg_extension_config_dump(). If they reach code bearing unqualified names, "does not exist" or "no schema has been selected to create in" errors might appear. Users may fix such errors by schema-qualifying affected names. After upgrading, consider watching server logs for these errors. The --table arguments of src/bin/scripts clients have been lax; for example, "vacuumdb -Zt pg_am\;CHECKPOINT" performed a checkpoint. That now fails, but for now, "vacuumdb -Zt 'pg_am(amname);CHECKPOINT'" still performs a checkpoint. Back-patch to 9.3 (all supported versions). Reviewed by Tom Lane, though this fix strategy was not his first choice. Reported by Arseniy Sharoglazov. Security: CVE-2018-1058 |
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.. | ||
access | ||
bootstrap | ||
catalog | ||
commands | ||
common | ||
datatype | ||
executor | ||
fe_utils | ||
foreign | ||
lib | ||
libpq | ||
mb | ||
nodes | ||
optimizer | ||
parser | ||
port | ||
portability | ||
postmaster | ||
regex | ||
replication | ||
rewrite | ||
snowball | ||
statistics | ||
storage | ||
tcop | ||
tsearch | ||
utils | ||
.gitignore | ||
c.h | ||
fmgr.h | ||
funcapi.h | ||
getaddrinfo.h | ||
getopt_long.h | ||
Makefile | ||
miscadmin.h | ||
pg_config_ext.h.in | ||
pg_config_ext.h.win32 | ||
pg_config_manual.h | ||
pg_config.h.in | ||
pg_config.h.win32 | ||
pg_getopt.h | ||
pg_trace.h | ||
pgstat.h | ||
pgtar.h | ||
pgtime.h | ||
port.h | ||
postgres_ext.h | ||
postgres_fe.h | ||
postgres.h | ||
rusagestub.h | ||
windowapi.h |