* New upstream bug fix/security release: (LP: #941912):
- Require execute permission on the trigger function for "CREATE
TRIGGER".
This missing check could allow another user to execute a trigger
function with forged input data, by installing it on a table he
owns. This is only of significance for trigger functions marked
SECURITY DEFINER, since otherwise trigger functions run as the
table owner anyway. (CVE-2012-0866)
- Convert newlines to spaces in names written in pg_dump comments.
pg_dump was incautious about sanitizing object names that are
emitted within SQL comments in its output script. A name containing
a newline would at least render the script syntactically incorrect.
Maliciously crafted object names could present a SQL injection risk
when the script is reloaded. (CVE-2012-0868)
- Fix btree index corruption from insertions concurrent with
vacuuming.
An index page split caused by an insertion could sometimes cause a
concurrently-running "VACUUM" to miss removing index entries that
it should remove. After the corresponding table rows are removed,
the dangling index entries would cause errors (such as "could not
read block N in file ...") or worse, silently wrong query results
after unrelated rows are re-inserted at the now-free table
locations. This bug has been present since release 8.2, but occurs
so infrequently that it was not diagnosed until now. If you have
reason to suspect that it has happened in your database, reindexing
the affected index will fix things.
- Allow non-existent values for some settings in "ALTER USER/DATABASE
SET".
Allow default_text_search_config, default_tablespace, and
temp_tablespaces to be set to names that are not known. This is
because they might be known in another database where the setting
is intended to be used, or for the tablespace cases because the
tablespace might not be created yet. The same issue was previously
recognized for search_path, and these settings now act like that
one.
- Track the OID counter correctly during WAL replay, even when it
wraps around.
Previously the OID counter would remain stuck at a high value until
the system exited replay mode. The practical consequences of that
are usually nil, but there are scenarios wherein a standby server
that's been promoted to master might take a long time to advance
the OID counter to a reasonable value once values are needed.
- Fix regular expression back-references with - attached.
Rather than enforcing an exact string match, the code would
effectively accept any string that satisfies the pattern
sub-expression referenced by the back-reference symbol.
A similar problem still afflicts back-references that are embedded
in a larger quantified expression, rather than being the immediate
subject of the quantifier. This will be addressed in a future
PostgreSQL release.
- Fix recently-introduced memory leak in processing of inet/cidr
values.
- Fix I/O-conversion-related memory leaks in plpgsql.
- Improve pg_dump's handling of inherited table columns.
pg_dump mishandled situations where a child column has a different
default expression than its parent column. If the default is
textually identical to the parent's default, but not actually the
same (for instance, because of schema search path differences) it
would not be recognized as different, so that after dump and
restore the child would be allowed to inherit the parent's default.
Child columns that are NOT NULL where their parent is not could
also be restored subtly incorrectly.
- Fix pg_restore's direct-to-database mode for INSERT-style table
data.
Direct-to-database restores from archive files made with
"--inserts" or "--column-inserts" options fail when using
pg_restore from a release dated September or December 2011, as a
result of an oversight in a fix for another problem. The archive
file itself is not at fault, and text-mode output is okay.
- Fix error in "contrib/intarray"'s int[] & int[] operator.
If the smallest integer the two input arrays have in common is 1,
and there are smaller values in either array, then 1 would be
incorrectly omitted from the result.
- Fix error detection in "contrib/pgcrypto"'s encrypt_iv() and
decrypt_iv().
These functions failed to report certain types of invalid-input
errors, and would instead return random garbage values for
incorrect input.
- Fix one-byte buffer overrun in "contrib/test_parser".
The code would try to read one more byte than it should, which
would crash in corner cases. Since "contrib/test_parser" is only
example code, this is not a security issue in itself, but bad
example code is still bad.
- Use __sync_lock_test_and_set() for spinlocks on ARM, if available.
This function replaces our previous use of the SWPB instruction,
which is deprecated and not available on ARMv6 and later. Reports
suggest that the old code doesn't fail in an obvious way on recent
ARM boards, but simply doesn't interlock concurrent accesses,
leading to bizarre failures in multiprocess operation.
- Use "-fexcess-precision=standard" option when building with gcc
versions that accept it.
This prevents assorted scenarios wherein recent versions of gcc
will produce creative results.
- Allow use of threaded Python on FreeBSD.
* Drop 00git_inet_cidr_unpack.patch, applied upstream.
-- Martin Pitt <email address hidden> Mon, 27 Feb 2012 15:23:24 +0100
This bug was fixed in the package postgresql-8.3 - 8.3.18- 0ubuntu0. 8.04
--------------- 0ubuntu0. 8.04) hardy-security; urgency=low
postgresql-8.3 (8.3.18-
* New upstream bug fix/security release: (LP: #941912): tly-running "VACUUM" to miss removing index entries that text_search_ config, default_tablespace, and tablespaces to be set to names that are not known. This is expression referenced by the back-reference symbol. related memory leaks in plpgsql. to-database restores from archive files made with intarray" 's int[] & int[] operator. pgcrypto" 's encrypt_iv() and test_parser" . test_parser" is only lock_test_ and_set( ) for spinlocks on ARM, if available. precision= standard" option when building with gcc cidr_unpack. patch, applied upstream.
- Require execute permission on the trigger function for "CREATE
TRIGGER".
This missing check could allow another user to execute a trigger
function with forged input data, by installing it on a table he
owns. This is only of significance for trigger functions marked
SECURITY DEFINER, since otherwise trigger functions run as the
table owner anyway. (CVE-2012-0866)
- Convert newlines to spaces in names written in pg_dump comments.
pg_dump was incautious about sanitizing object names that are
emitted within SQL comments in its output script. A name containing
a newline would at least render the script syntactically incorrect.
Maliciously crafted object names could present a SQL injection risk
when the script is reloaded. (CVE-2012-0868)
- Fix btree index corruption from insertions concurrent with
vacuuming.
An index page split caused by an insertion could sometimes cause a
concurren
it should remove. After the corresponding table rows are removed,
the dangling index entries would cause errors (such as "could not
read block N in file ...") or worse, silently wrong query results
after unrelated rows are re-inserted at the now-free table
locations. This bug has been present since release 8.2, but occurs
so infrequently that it was not diagnosed until now. If you have
reason to suspect that it has happened in your database, reindexing
the affected index will fix things.
- Allow non-existent values for some settings in "ALTER USER/DATABASE
SET".
Allow default_
temp_
because they might be known in another database where the setting
is intended to be used, or for the tablespace cases because the
tablespace might not be created yet. The same issue was previously
recognized for search_path, and these settings now act like that
one.
- Track the OID counter correctly during WAL replay, even when it
wraps around.
Previously the OID counter would remain stuck at a high value until
the system exited replay mode. The practical consequences of that
are usually nil, but there are scenarios wherein a standby server
that's been promoted to master might take a long time to advance
the OID counter to a reasonable value once values are needed.
- Fix regular expression back-references with - attached.
Rather than enforcing an exact string match, the code would
effectively accept any string that satisfies the pattern
sub-
A similar problem still afflicts back-references that are embedded
in a larger quantified expression, rather than being the immediate
subject of the quantifier. This will be addressed in a future
PostgreSQL release.
- Fix recently-introduced memory leak in processing of inet/cidr
values.
- Fix I/O-conversion-
- Improve pg_dump's handling of inherited table columns.
pg_dump mishandled situations where a child column has a different
default expression than its parent column. If the default is
textually identical to the parent's default, but not actually the
same (for instance, because of schema search path differences) it
would not be recognized as different, so that after dump and
restore the child would be allowed to inherit the parent's default.
Child columns that are NOT NULL where their parent is not could
also be restored subtly incorrectly.
- Fix pg_restore's direct-to-database mode for INSERT-style table
data.
Direct-
"--inserts" or "--column-inserts" options fail when using
pg_restore from a release dated September or December 2011, as a
result of an oversight in a fix for another problem. The archive
file itself is not at fault, and text-mode output is okay.
- Fix error in "contrib/
If the smallest integer the two input arrays have in common is 1,
and there are smaller values in either array, then 1 would be
incorrectly omitted from the result.
- Fix error detection in "contrib/
decrypt_iv().
These functions failed to report certain types of invalid-input
errors, and would instead return random garbage values for
incorrect input.
- Fix one-byte buffer overrun in "contrib/
The code would try to read one more byte than it should, which
would crash in corner cases. Since "contrib/
example code, this is not a security issue in itself, but bad
example code is still bad.
- Use __sync_
This function replaces our previous use of the SWPB instruction,
which is deprecated and not available on ARMv6 and later. Reports
suggest that the old code doesn't fail in an obvious way on recent
ARM boards, but simply doesn't interlock concurrent accesses,
leading to bizarre failures in multiprocess operation.
- Use "-fexcess-
versions that accept it.
This prevents assorted scenarios wherein recent versions of gcc
will produce creative results.
- Allow use of threaded Python on FreeBSD.
* Drop 00git_inet_
-- Martin Pitt <email address hidden> Mon, 27 Feb 2012 15:23:24 +0100