postgresql-8.1 8.1.22-0ubuntu0.6.06 source package in Ubuntu

Changelog

postgresql-8.1 (8.1.22-0ubuntu0.6.06) dapper-security; urgency=low

  * New upstream security/bug fix release: (LP: #655293)
    - Use a separate interpreter for each calling SQL userid in PL/Perl
      and PL/Tcl.
      This change prevents security problems that can be caused by
      subverting Perl or Tcl code that will be executed later in the same
      session under another SQL user identity (for example, within a
      SECURITY DEFINER function). Most scripting languages offer numerous
      ways that that might be done, such as redefining standard functions
      or operators called by the target function. Without this change,
      any SQL user with Perl or Tcl language usage rights can do
      essentially anything with the SQL privileges of the target
      function's owner.
      The cost of this change is that intentional communication among
      Perl and Tcl functions becomes more difficult. To provide an escape
      hatch, PL/PerlU and PL/TclU functions continue to use only one
      interpreter per session. This is not considered a security issue
      since all such functions execute at the trust level of a database
      superuser already.
      It is likely that third-party procedural languages that claim to
      offer trusted execution have similar security issues. We advise
      contacting the authors of any PL you are depending on for
      security-critical purposes.
      Our thanks to Tim Bunce for pointing out this issue
      (CVE-2010-3433).
    - Prevent possible crashes in pg_get_expr() by disallowing it from
      being called with an argument that is not one of the system catalog
      columns it's intended to be used with.
    - Fix "cannot handle unplanned sub-select" error.
      This occurred when a sub-select contains a join alias reference
      that expands into an expression containing another sub-select.
    - Prevent show_session_authorization() from crashing within
      autovacuum processes.
    - Defend against functions returning setof record where not all the
      returned rows are actually of the same rowtype.
    - Fix possible failure when hashing a pass-by-reference function
      result.
    - Take care to fsync the contents of lockfiles (both "postmaster.pid"
      and the socket lockfile) while writing them.
      This omission could result in corrupted lockfile contents if the
      machine crashes shortly after postmaster start. That could in turn
      prevent subsequent attempts to start the postmaster from
      succeeding, until the lockfile is manually removed.
    - Avoid recursion while assigning XIDs to heavily-nested
      subtransactions.
      The original coding could result in a crash if there was limited
      stack space.
    - Fix log_line_prefix's %i escape, which could produce junk early in
      backend startup.
    - Fix possible data corruption in "ALTER TABLE ... SET TABLESPACE"
      when archiving is enabled.
    - Allow "CREATE DATABASE" and "ALTER DATABASE ... SET TABLESPACE" to
      be interrupted by query-cancel.
    - In PL/Python, defend against null pointer results from
      PyCObject_AsVoidPtr and PyCObject_FromVoidPtr.
    - Improve "contrib/dblink"'s handling of tables containing dropped
      columns.
    - Fix connection leak after "duplicate connection name" errors in
      "contrib/dblink".
    - Fix "contrib/dblink" to handle connection names longer than 62
      bytes correctly.
    - Update build infrastructure and documentation to reflect the source
      code repository's move from CVS to Git (Magnus Hagander and others)
 -- Martin Pitt <email address hidden>   Wed, 06 Oct 2010 10:04:24 +0200