supported versions of our database system, including 11.5, 10.10,
9.6.15, 9.5.19, and 9.4.24, as well as the third beta of PostgreSQL 12.
This release fixes two security issues in the PostgreSQL server, two
security issues found in one of the PostgreSQL Windows installers, and
over 40 bugs reported since the previous release.
Users should install these updates as soon as possible.
A Note on the PostgreSQL 12 Beta
================================
In the spirit of the open source PostgreSQL community, we strongly
encourage you to test the new features of PostgreSQL 12 in your database
systems to help us eliminate any bugs or other issues that may exist.
While we do not advise you to run PostgreSQL 12 Beta 3 in your
production environments, we encourage you to find ways to run your
typical application workloads against this beta release.
Your testing and feedback will help the community ensure that the
PostgreSQL 12 release upholds our standards of providing a stable,
reliable release of the world's most advanced open source relational
database.
Security Issues
===============
Two security vulnerabilities have been closed by this release:
* CVE-2019-10208: `TYPE` in `pg_temp` executes arbitrary SQL during
`SECURITY DEFINER` execution
Versions Affected: 9.4 - 11
Given a suitable `SECURITY DEFINER` function, an attacker can execute
arbitrary SQL under the identity of the function owner. An attack
requires `EXECUTE` permission on the function, which must itself contain
a function call having inexact argument type match. For example,
`length('foo'::varchar)` and `length('foo')` are inexact, while
`length('foo'::text)` is exact. As part of exploiting this
vulnerability, the attacker uses `CREATE DOMAIN` to create a type in a
`pg_temp` schema. The attack pattern and fix are similar to that for
CVE-2007-2138.
Writing `SECURITY DEFINER` functions continues to require following the
considerations noted in the documentation:
https://www.postgresql.org/docs/devel/sql-createfunction.html#SQL-CREATEFUNCTION-SECURITY
The PostgreSQL project thanks Tom Lane for reporting this problem.
* CVE-2019-10209: Memory disclosure in cross-type comparison for hashed
subplan
Versions Affected: 11
In a database containing hypothetical, user-defined hash equality operators, an attacker could read arbitrary bytes of server memory. For an attack to become possible, a superuser would need to create unusual operators. It is possible for operators not purpose-crafted for attack to have the properties that enable an attack, but we are not aware of specific examples.
The PostgreSQL project thanks Andreas Seltenreich for reporting this problem.
as defined in Mk/bsd.default-versions.mk which has moved from GCC 8.3
to GCC 9.1 under most circumstances now after revision 507371.
This includes ports
- with USE_GCC=yes or USE_GCC=any,
- with USES=fortran,
- using Mk/bsd.octave.mk which in turn features USES=fortran, and
- with USES=compiler specifying openmp, nestedfct, c11, c++0x, c++11-lang,
c++11-lib, c++14-lang, c++17-lang, or gcc-c++11-lib
plus, everything INDEX-11 shows with a dependency on lang/gcc9 now.
PR: 238330
The PostgreSQL Global Development Group has released an update to all supported
versions of our database system, including 11.4, 10.9, 9.6.14, 9.5.18, and
9.4.23, as well as the second beta of PostgreSQL 12. This release fixes one
security issue and over 25 bugs since the previous cumulative update in May.
This release is made outside of the normal update release schedule as the
security vulnerability was determined to be critical enough to distribute the
fix as quickly as possible. Users who are running PostgreSQL 10, PostgreSQL 11,
or the PostgreSQL 12 beta should upgrade as soon as possible.
All other users should plan to apply this update at the next scheduled
downtime.
Release notes: https://www.postgresql.org/about/news/1949/
Security: 245629d4-991e-11e9-82aa-6cc21735f730
I've had to bump revision for several slaves here, but most will not
be rebuilt, except the -client slaves. Apologies for anyone having
to rebuild -clients unnecessarily, but it's not a heavy task- better safe
than sorry.
PR: ports/236156
Reported by: Andrew Dunstan (PostgreSQL), koobs, Dmitri Goutnik
supported versions of our database system, including 11.2, 10.7, 9.6.12,
9.5.16, and 9.4.21. This release changes the behavior in how PostgreSQL
interfaces with `fsync()` and includes fixes for partitioning and over
70 other bugs that were reported over the past three months.
Users should plan to apply this update at the next scheduled downtime.
FreeBSD port adds OPTIONS knob to support LLVM JIT. [1]
Highlight: Change in behavior with fsync()
------------------------------------------
When available in an operating system and enabled in the configuration
file (which it is by default), PostgreSQL uses the kernel function
`fsync()` to help ensure that data is written to a disk. In some
operating systems that provide `fsync()`, when the kernel is unable to
write out the data, it returns a failure and flushes the data that was
supposed to be written from its data buffers.
This flushing operation has an unfortunate side-effect for PostgreSQL:
if PostgreSQL tries again to write the data to disk by again calling
`fsync()`, `fsync()` will report back that it succeeded, but the data
that PostgreSQL believed to be saved to the disk would not actually be
written. This presents a possible data corruption scenario.
This update modifies how PostgreSQL handles a `fsync()` failure:
PostgreSQL will no longer retry calling `fsync()` but instead will
panic. In this case, PostgreSQL can then replay the data from the
write-ahead log (WAL) to help ensure the data is written. While this may
appear to be a suboptimal solution, there are presently few alternatives
and, based on reports, the problem case occurs extremely rarely.
A new server parameter `data_sync_retry` has been added to manage this
behavior. If you are certain that your kernel does not discard dirty
data buffers in such scenarios, you can set `data_sync_retry` to `on` to
restore the old behavior.
Release Notes: https://www.postgresql.org/about/news/1920/
PR: 232490 [1]
defined via Mk/bsd.default-versions.mk which has moved from GCC 7.4 t
GCC 8.2 under most circumstances.
This includes ports
- with USE_GCC=yes or USE_GCC=any,
- with USES=fortran,
- using Mk/bsd.octave.mk which in turn features USES=fortran, and
- with USES=compiler specifying openmp, nestedfct, c11, c++0x, c++11-lang,
c++11-lib, c++14-lang, c++17-lang, or gcc-c++11-lib
plus, as a double check, everything INDEX-11 showed depending on lang/gcc7.
PR: 231590
supported versions of our database system, including 9.6.5, 9.5.9,
9.4.14, 9.3.19, and 9.2.23.
This release includes fixes that prevent a crash in pg_restore when
using parallel mode. It also patches over a few other bugs reported
since the last releases in August.
Additionally, in 9.4.14 only, there is a fix to an issue with walsenders
preventing primary-server shutdown unless immediate shutdown mode is used.
Users should plan to update at the next convenient downtime.
Bug Fixes and Improvements
This update also fixes a number of bugs reported in the last few weeks.
Some of these issues affect only version 9.6, but many affect all
supported versions:
* Show foreign tables in information_schema.table_privileges view.
This fix applies to new databases, see the release notes for the
procedure to apply the fix to an existing database.
* Correctly identify columns that are of a range type or domain type
over a composite type or domain type being searched for
* Prevent crash when passing fixed-length pass-by-reference data types
to parallel worker processes
* Change ecpg’s parser to allow RETURNING clauses without attached C
variables
* Change ecpg’s parser to recognize backslash continuation of C
preprocessor command lines
* Improve selection of compiler flags for PL/Perl on Windows
