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Update release notes with security issues.

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Security: CVE-2010-1169, CVE-2010-1170
This commit is contained in:
Tom Lane 2010-05-13 21:27:44 +00:00
parent 765b01b6c8
commit c30e3d82db
1 changed files with 41 additions and 1 deletions
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42
doc/src/sgml/release-7.4.sgml
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@ -1,4 +1,4 @@
<!-- $PostgreSQL: pgsql/doc/src/sgml/release-7.4.sgml,v 1.1.10.6 2010/05/12 23:28:06 tgl Exp $ -->
<!-- $PostgreSQL: pgsql/doc/src/sgml/release-7.4.sgml,v 1.1.10.7 2010/05/13 21:27:44 tgl Exp $ -->
<!-- See header comment in release.sgml about typical markup -->
<sect1 id="release-7-4-29">
@ -37,6 +37,46 @@
<itemizedlist>
<listitem>
<para>
Enforce restrictions in <literal>plperl</> using an opmask applied to
the whole interpreter, instead of using <filename>Safe.pm</>
(Tim Bunce, Andrew Dunstan)
</para>
<para>
Recent developments have convinced us that <filename>Safe.pm</> is too
insecure to rely on for making <literal>plperl</> trustable. This
change removes use of <filename>Safe.pm</> altogether, in favor of using
a separate interpreter with an opcode mask that is always applied.
Pleasant side effects of the change include that it is now possible to
use Perl's <literal>strict</> pragma in a natural way in
<literal>plperl</>, and that Perl's <literal>$a</> and <literal>$b</>
variables work as expected in sort routines, and that function
compilation is significantly faster. (CVE-2010-1169)
</para>
</listitem>
<listitem>
<para>
Prevent PL/Tcl from executing untrustworthy code from
<structname>pltcl_modules</> (Tom)
</para>
<para>
PL/Tcl's feature for autoloading Tcl code from a database table
could be exploited for trojan-horse attacks, because there was no
restriction on who could create or insert into that table. This change
disables the feature unless <structname>pltcl_modules</> is owned by a
superuser. (However, the permissions on the table are not checked, so
installations that really need a less-than-secure modules table can
still grant suitable privileges to trusted non-superusers.) Also,
prevent loading code into the unrestricted <quote>normal</> Tcl
interpreter unless we are really going to execute a <literal>pltclu</>
function. (CVE-2010-1170)
</para>
</listitem>
<listitem>
<para>
Do not allow an unprivileged user to reset superuser-only parameter