Objavljena je nadogradnja programskog paketa Python u kojoj je ispravljeno nekoliko sigurnosnih ranjivosti koje je moguće iskoristiti za otkrivanje potencijalno osjetljivih informacija i DoS napad.

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                   Red Hat Security Advisory

Synopsis:          Moderate: python security, bug fix, and enhancement update
Advisory ID:       RHSA-2011:0554-01
Product:           Red Hat Enterprise Linux
Advisory URL:      https://rhn.redhat.com/errata/RHSA-2011-0554.html
Issue date:        2011-05-19
CVE Names:         CVE-2010-3493 CVE-2011-1015 CVE-2011-1521 
=====================================================================

1. Summary:

Updated python packages that fix three security issues, several bugs, and
add various enhancements are now available for Red Hat Enterprise Linux 6.

The Red Hat Security Response Team has rated this update as having moderate
security impact. Common Vulnerability Scoring System (CVSS) base scores,
which give detailed severity ratings, are available for each vulnerability
from the CVE links in the References section.

2. Relevant releases/architectures:

Red Hat Enterprise Linux Desktop (v. 6) - i386, x86_64
Red Hat Enterprise Linux Desktop Optional (v. 6) - i386, x86_64
Red Hat Enterprise Linux HPC Node (v. 6) - x86_64
Red Hat Enterprise Linux HPC Node Optional (v. 6) - x86_64
Red Hat Enterprise Linux Server (v. 6) - i386, noarch, ppc64, s390x, x86_64
Red Hat Enterprise Linux Server Optional (v. 6) - i386, ppc64, s390x, x86_64
Red Hat Enterprise Linux Workstation (v. 6) - i386, noarch, x86_64
Red Hat Enterprise Linux Workstation Optional (v. 6) - i386, x86_64

3. Description:

Python is an interpreted, interactive, object-oriented programming
language.

A flaw was found in the Python urllib and urllib2 libraries where they
would not differentiate between different target URLs when handling
automatic redirects. This caused Python applications using these modules to
follow any new URL that they understood, including the "file://" URL type.
This could allow a remote server to force a local Python application to
read a local file instead of the remote one, possibly exposing local files
that were not meant to be exposed. (CVE-2011-1521)

A race condition was found in the way the Python smtpd module handled new
connections. A remote user could use this flaw to cause a Python script
using the smtpd module to terminate. (CVE-2010-3493)

An information disclosure flaw was found in the way the Python
CGIHTTPServer module processed certain HTTP GET requests. A remote attacker
could use a specially-crafted request to obtain the CGI script's source
code. (CVE-2011-1015)

This erratum also upgrades Python to upstream version 2.6.6, and includes a
number of bug fixes and enhancements. Documentation for these bug fixes
and enhancements is available from the Technical Notes document, linked to
in the References section.

All users of Python are advised to upgrade to these updated packages, which
correct these issues, and fix the bugs and add the enhancements noted in
the Technical Notes.

4. Solution:

Before applying this update, make sure all previously-released errata
relevant to your system have been applied.

This update is available via the Red Hat Network. Details on how to
use the Red Hat Network to apply this update are available at
https://access.redhat.com/kb/docs/DOC-11259

5. Bugs fixed (http://bugzilla.redhat.com/):

603073 - python >>> help() >>> modules command traceback when used without
DISPLAY
614680 - Try to print repr() when a fatal garbage collection assertion fails
625393 - adjust test_commands unit test to the updated output of the ls
command
625395 - include the tests/data directory in the python-test rpm
626756 - test_dbm fails on ppc64 & s390x
627301 - Rebase python from 2.6.5 to 2.6.6 in RHEL 6.1
632200 - CVE-2010-3493 Python: SMTP proxy RFC 2821 module DoS (uncaught
exception) (Issue #9129)
634944 - rpmlint errors and warnings
639392 - Generating python backtrace with "py-bt" fails with a traceback
649274 - Infinite recursion in urllib2 on basicauth failure
650588 - subprocess fails in select when descriptors are large (rhel6)
669847 - urllib2's AbstractBasicAuthHandler is limited to 6 requests
680094 - CVE-2011-1015 python (CGIHTTPServer): CGI script source code
disclosure
684991 - python update causes rhythmbox to crash
690315 - python occasionally fails to build on machines with more than one
core
690560 - CVE-2011-1521 python (urllib, urllib2): Improper management of ftp://
and file:// URL schemes (Issue #11662)

6. Package List:

Red Hat Enterprise Linux Desktop (v. 6):

Source:
ftp://ftp.redhat.com/pub/redhat/linux/enterprise/6Client/en/os/SRPMS/python-2.6.6-20.el6.src.rpm

i386:
python-2.6.6-20.el6.i686.rpm
python-debuginfo-2.6.6-20.el6.i686.rpm
python-libs-2.6.6-20.el6.i686.rpm
tkinter-2.6.6-20.el6.i686.rpm

x86_64:
python-2.6.6-20.el6.x86_64.rpm
python-debuginfo-2.6.6-20.el6.x86_64.rpm
python-libs-2.6.6-20.el6.x86_64.rpm
tkinter-2.6.6-20.el6.x86_64.rpm

Red Hat Enterprise Linux Desktop Optional (v. 6):

Source:
ftp://ftp.redhat.com/pub/redhat/linux/enterprise/6Client/en/os/SRPMS/python-2.6.6-20.el6.src.rpm

i386:
python-debuginfo-2.6.6-20.el6.i686.rpm
python-devel-2.6.6-20.el6.i686.rpm
python-test-2.6.6-20.el6.i686.rpm
python-tools-2.6.6-20.el6.i686.rpm

x86_64:
python-debuginfo-2.6.6-20.el6.x86_64.rpm
python-devel-2.6.6-20.el6.x86_64.rpm
python-test-2.6.6-20.el6.x86_64.rpm
python-tools-2.6.6-20.el6.x86_64.rpm

Red Hat Enterprise Linux HPC Node (v. 6):

Source:
ftp://ftp.redhat.com/pub/redhat/linux/enterprise/6ComputeNode/en/os/SRPMS/python-2.6.6-20.el6.src.rpm

x86_64:
python-2.6.6-20.el6.x86_64.rpm
python-debuginfo-2.6.6-20.el6.x86_64.rpm
python-libs-2.6.6-20.el6.x86_64.rpm

Red Hat Enterprise Linux HPC Node Optional (v. 6):

Source:
ftp://ftp.redhat.com/pub/redhat/linux/enterprise/6ComputeNode/en/os/SRPMS/python-2.6.6-20.el6.src.rpm

x86_64:
python-debuginfo-2.6.6-20.el6.x86_64.rpm
python-devel-2.6.6-20.el6.x86_64.rpm
python-test-2.6.6-20.el6.x86_64.rpm
python-tools-2.6.6-20.el6.x86_64.rpm
tkinter-2.6.6-20.el6.x86_64.rpm

Red Hat Enterprise Linux Server (v. 6):

Source:
ftp://ftp.redhat.com/pub/redhat/linux/enterprise/6Server/en/os/SRPMS/python-2.6.6-20.el6.src.rpm
ftp://ftp.redhat.com/pub/redhat/linux/enterprise/6Server/en/os/SRPMS/python-docs-2.6.6-2.el6.src.rpm

i386:
python-2.6.6-20.el6.i686.rpm
python-debuginfo-2.6.6-20.el6.i686.rpm
python-devel-2.6.6-20.el6.i686.rpm
python-libs-2.6.6-20.el6.i686.rpm
tkinter-2.6.6-20.el6.i686.rpm

noarch:
python-docs-2.6.6-2.el6.noarch.rpm

ppc64:
python-2.6.6-20.el6.ppc64.rpm
python-debuginfo-2.6.6-20.el6.ppc64.rpm
python-devel-2.6.6-20.el6.ppc64.rpm
python-libs-2.6.6-20.el6.ppc64.rpm
tkinter-2.6.6-20.el6.ppc64.rpm

s390x:
python-2.6.6-20.el6.s390x.rpm
python-debuginfo-2.6.6-20.el6.s390x.rpm
python-devel-2.6.6-20.el6.s390x.rpm
python-libs-2.6.6-20.el6.s390x.rpm

x86_64:
python-2.6.6-20.el6.x86_64.rpm
python-debuginfo-2.6.6-20.el6.x86_64.rpm
python-devel-2.6.6-20.el6.x86_64.rpm
python-libs-2.6.6-20.el6.x86_64.rpm
tkinter-2.6.6-20.el6.x86_64.rpm

Red Hat Enterprise Linux Server Optional (v. 6):

Source:
ftp://ftp.redhat.com/pub/redhat/linux/enterprise/6Server/en/os/SRPMS/python-2.6.6-20.el6.src.rpm

i386:
python-debuginfo-2.6.6-20.el6.i686.rpm
python-test-2.6.6-20.el6.i686.rpm
python-tools-2.6.6-20.el6.i686.rpm

ppc64:
python-debuginfo-2.6.6-20.el6.ppc64.rpm
python-test-2.6.6-20.el6.ppc64.rpm
python-tools-2.6.6-20.el6.ppc64.rpm

s390x:
python-debuginfo-2.6.6-20.el6.s390x.rpm
python-test-2.6.6-20.el6.s390x.rpm
python-tools-2.6.6-20.el6.s390x.rpm
tkinter-2.6.6-20.el6.s390x.rpm

x86_64:
python-debuginfo-2.6.6-20.el6.x86_64.rpm
python-test-2.6.6-20.el6.x86_64.rpm
python-tools-2.6.6-20.el6.x86_64.rpm

Red Hat Enterprise Linux Workstation (v. 6):

Source:
ftp://ftp.redhat.com/pub/redhat/linux/enterprise/6Workstation/en/os/SRPMS/python-2.6.6-20.el6.src.rpm
ftp://ftp.redhat.com/pub/redhat/linux/enterprise/6Workstation/en/os/SRPMS/python-docs-2.6.6-2.el6.src.rpm

i386:
python-2.6.6-20.el6.i686.rpm
python-debuginfo-2.6.6-20.el6.i686.rpm
python-devel-2.6.6-20.el6.i686.rpm
python-libs-2.6.6-20.el6.i686.rpm
tkinter-2.6.6-20.el6.i686.rpm

noarch:
python-docs-2.6.6-2.el6.noarch.rpm

x86_64:
python-2.6.6-20.el6.x86_64.rpm
python-debuginfo-2.6.6-20.el6.x86_64.rpm
python-devel-2.6.6-20.el6.x86_64.rpm
python-libs-2.6.6-20.el6.x86_64.rpm
tkinter-2.6.6-20.el6.x86_64.rpm

Red Hat Enterprise Linux Workstation Optional (v. 6):

Source:
ftp://ftp.redhat.com/pub/redhat/linux/enterprise/6Workstation/en/os/SRPMS/python-2.6.6-20.el6.src.rpm

i386:
python-debuginfo-2.6.6-20.el6.i686.rpm
python-test-2.6.6-20.el6.i686.rpm
python-tools-2.6.6-20.el6.i686.rpm

x86_64:
python-debuginfo-2.6.6-20.el6.x86_64.rpm
python-test-2.6.6-20.el6.x86_64.rpm
python-tools-2.6.6-20.el6.x86_64.rpm

These packages are GPG signed by Red Hat for security.  Our key and 
details on how to verify the signature are available from
https://access.redhat.com/security/team/key/#package

7. References:

https://www.redhat.com/security/data/cve/CVE-2010-3493.html
https://www.redhat.com/security/data/cve/CVE-2011-1015.html
https://www.redhat.com/security/data/cve/CVE-2011-1521.html
https://access.redhat.com/security/updates/classification/#moderate
http://docs.redhat.com/docs/en-US/Red_Hat_Enterprise_Linux/6/html/6.1_Technical_Notes/python.html
http://www.python.org/download/releases/2.6.6/NEWS.txt

8. Contact:

The Red Hat security contact is <Ova e-mail adresa je zaštićena od spambota. Potrebno je omogućiti JavaScript da je vidite.>.  More contact
details at https://access.redhat.com/security/team/contact/

Copyright 2011 Red Hat, Inc.
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