| Commit message (Collapse) | Author | Age |
|---|
| |
|
|
|
| |
This is the first run of the Perl-based pgindent script. Also update
pgindent instructions.
|
| |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| |
Previously, if the postmaster initialized OpenSSL's PRNG (which it will do
when ssl=on in postgresql.conf), the same pseudo-random state would be
inherited by each forked child process. The problem is masked to a
considerable extent if the incoming connection uses SSL encryption, but
when it does not, identical pseudo-random state is made available to
functions like contrib/pgcrypto. The process's PID does get mixed into any
requested random output, but on most systems that still only results in 32K
or so distinct random sequences available across all Postgres sessions.
This might allow an attacker who has database access to guess the results
of "secure" operations happening in another session.
To fix, forcibly reset the PRNG after fork(). Each child process that has
need for random numbers from OpenSSL's generator will thereby be forced to
go through OpenSSL's normal initialization sequence, which should provide
much greater variability of the sequences. There are other ways we might
do this that would be slightly cheaper, but this approach seems the most
future-proof against SSL-related code changes.
This has been assigned CVE-2013-1900, but since the issue and the patch
have already been publicized on pgsql-hackers, there's no point in trying
to hide this commit.
Back-patch to all supported branches.
Marko Kreen
|
| |
|
|
|
| |
Fully update git head, and update back branches in ./COPYRIGHT and
legal.sgml files.
|
| |
|
|
|
|
|
|
|
| |
The simplest way to handle this is just to copy-and-paste the relevant
code block in fork_process.c, so that's what I did. (It's possible that
something more complicated would be useful to packagers who want to work
with either the old or the new API; but at this point the number of such
people is rapidly approaching zero, so let's just get the minimal thing
done.) Update relevant documentation as well.
|
| |
|
|
|
|
| |
This is related to aa90e148ca70a235897b1227f1a7cd1c66bc5368, but this
code is only used under -DLINUX_OOM_ADJ, so it was apparently
overlooked then.
|
| | |
|
| | |
|
| | |
|
| | |
|
| |
|
|
|
|
| |
settings to prevent the postmaster from being OOM-killed on Linux systems.
Alex Hunsaker and Tom Lane
|
| | |
|
| | |
|
| | |
|
| |
|
|
| |
back-stamped for this.
|
| | |
|
| | |
|
| | |
|
| |
|
|
|
| |
should hopefully unbreak the Win32 build. Apologies for breaking it in
the first place.
|
| | |
|
|
|
before we can invoke fork() -- flush stdio buffers, save and restore the
profiling timer on Linux with LINUX_PROFILE, and handle BeOS stuff. This
patch moves that code into a single function, fork_process(), instead of
duplicating it at the various callsites of fork().
This patch doesn't address the EXEC_BACKEND case; there is room for
further cleanup there.
|
