Vulnerabilities in PostgreSQL SET ROLE/SET SESSION AUTHORIZATION
By issuing SET ROLE with a specially crafted argument, it is possible
for any logged-in database user to acquire the privileges of any other
database user, including superusers. Database superuser status allows
access to the machine's filesystem and hence might be used to mount
remote attacks against the rest of the server's operating system.
This error exists in PostgreSQL releases 8.1.0 - 8.1.2 and is fixed in 8.1.3.
The same underlying bug exists in SET SESSION AUTHORIZATION in all
releases back to 7.3. This variant cannot be exploited for privilege
escalation, because one must already be superuser to use SET SESSION
AUTHORIZATION. However, if the server has been compiled with Asserts
enabled (which is not the default), then it is possible to trigger an
Assert failure before the privilege check is reached. This would cause
a momentary denial of service to other database users. This is repaired
in PostgreSQL releases 8.1.3, 8.0.7, 7.4.12, and 7.3.14.
server package, so that the informationis always available and not only
when the docs package is installed. This was requested by many people.
SECURITY:
Version 8.1.2 fixes security and other problems that were present in 8.1.0.
See http://archives.postgresql.org/pgsql-announce/2006-01/msg00001.php for
details.
As noted on ports@ recently, pkg_add -r relies on conflicts, and the
sheer existence of updates means we MUST take the past into account in
conflicts now.
Note the renaming of hugs98 to valid package names where versions are
concerned.
This commit shows clearly the renaming of the xfce4 plugin packages, the
ditching of eclipse flavors, the splitting of nessus into subpackages,
the splitting of various other software documentations, some packaging bugs
in kdeedu, and a lot of files moving around...
okay pvalchev@
This patch fixes a problem where low privileged users can invoke the
LOAD extension to load arbitrary libraries into the postgres process
space.
ok peter.galbavy at knowtion.net
- Rework WANTLIB as this port has SUBPACKAGES
- Replace RUN_DEPENDS with LIB_DEPENDS
- Add PKG_ARCH
- Bump PKGNAME
ok sturm@, Brandon Palmer (MAINTAINER)
Changes in the package layout means that there is now a -client and
-server subpackage, and users no longer need to decide which, as
the -server depends on the -client, just like the sane cases in
mysql and openldap.
Other changes include:
* Removal of the tcl FLAVOR until someone with more tcl/tk knowledge
can make it work correctly.
* The INSTALL-server script now created a _postgresql user and group
if they don't already exist, and also a default database in
/var/postgresql if that directory also doesn't exist.
* The port is marked for NO_SHARED_ARCHS as the -server subpackage
needs shared lib support to build.
* The port will build with spinlocks disabled on hppa until someone
can check and test this problem more closely.
Built and checked on i386, sparc64, amd64, macppc (waiting for regress
test feedback).
Dependent packages will be updated after this commit, shortly.
Two bugs were discovered that lead to a buffer overflow in PostgreSQL
in the abstract data type (ADT) to ASCII conversion functions.
It is believed that, under the right circumstances, an attacker may use
this vulnerability to execute arbitrary instructions on the PostgreSQL
server.
ok Brandon Palmer (maintainer)
The license says:
Permission to use, copy, modify, and distribute this software and its
documentation for any purpose, without fee, and without a written agreement
is hereby granted, provided that the above copyright notice and this
paragraph and the following two paragraphs appear in all copies.
noticed by markus@
