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OpenPKG Security Advisory                            The OpenPKG Project
http://www.openpkg.org/security.html              http://www.openpkg.org
openpkg-security@openpkg.org                         openpkg@openpkg.org
OpenPKG-SA-2006.004                                          19-Feb-2006
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Package:             postgresql
Vulnerability:       privilege escalation
OpenPKG Specific:    no

Affected Releases:   Affected Packages:           Corrected Packages:
OpenPKG CURRENT      <= postgresql-8.1.2-20060211 >= postgresql-8.1.3-20060213
OpenPKG 2.5          <= postgresql-8.0.4-2.5.0    >= postgresql-8.0.4-2.5.1
OpenPKG 2.4          <= postgresql-8.0.3-2.4.0    >= postgresql-8.0.3-2.4.1
OpenPKG 2.3          <= postgresql-8.0.1-2.3.1    >= postgresql-8.0.1-2.3.2

Description:
  According to vendor security information [0], privilege escalation
  vulnerabilitiesd exist in the PostgreSQL RDBMS [1] before version
  8.1.3. The bug allowed any logged-in user to "SET ROLE" to any other
  database user id. Due to inadequate validity checking, a user could
  exploit the special case that "SET ROLE" normally uses to restore the
  previous role setting after an error. This allowed ordinary users to
  acquire superuser status, for example. The Common Vulnerabilities
  and Exposures (CVE) project assigned the id CVE-2006-0553 [2] to the
  problem.

  The escalation of privilege risk exists only in versions 8.1.0 to
  8.1.2. However, in all versions back to 7.3 there is a related bug in
  "SET SESSION AUTHORIZATION" that allows unprivileged users to crash
  the server, if it has been compiled with Asserts enabled (which is not
  the default).
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References:
  [0] http://www.postgresql.org/docs/8.1/static/release.html#RELEASE-8-1-3
  [1] http://www.postgresql.org/
  [2] http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2006-0553
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For security reasons, this advisory was digitally signed with the
OpenPGP public key "OpenPKG <openpkg@openpkg.org>" (ID 63C4CB9F) of the
OpenPKG project which you can retrieve from http://pgp.openpkg.org and
hkp://pgp.openpkg.org. Follow the instructions on http://pgp.openpkg.org/
for details on how to verify the integrity of this advisory.
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