RHSA-2015:1330 - Security Advisory

Topic

Updated python packages that fix multiple security issues, several bugs
and add one enhancement are now available for Red Hat Enterprise Linux 6.

Red Hat Product Security 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.

Description

Python is an interpreted, interactive, object-oriented programming language
often compared to Tcl, Perl, Scheme, or Java. Python includes modules,
classes, exceptions, very high level dynamic data types and dynamic typing.
Python supports interfaces to many system calls and libraries, as well as
to various windowing systems (X11, Motif, Tk, Mac and MFC).

It was discovered that the socket.recvfrom_into() function failed to check
the size of the supplied buffer. This could lead to a buffer overflow when
the function was called with an insufficiently sized buffer.
(CVE-2014-1912)

It was discovered that multiple Python standard library modules
implementing network protocols (such as httplib or smtplib) failed to
restrict the sizes of server responses. A malicious server could cause a
client using one of the affected modules to consume an excessive amount of
memory. (CVE-2013-1752)

It was discovered that the CGIHTTPServer module incorrectly handled URL
encoded paths. A remote attacker could use this flaw to execute scripts
outside of the cgi-bin directory, or disclose the source code of the
scripts in the cgi-bin directory. (CVE-2014-4650)

An integer overflow flaw was found in the way the buffer() function handled
its offset and size arguments. An attacker able to control these arguments
could use this flaw to disclose portions of the application memory or cause
it to crash. (CVE-2014-7185)

These updated python packages also include numerous bug fixes and
enhancements. Space precludes documenting all of these changes in this
advisory. For information on the most significant of these changes, users
are directed to the following article on the Red Hat Customer Portal:

https://access.redhat.com/articles/1495363

All python users are advised to upgrade to these updated packages, which
contain backported patches to correct these issues and add this
enhancement.

Solution

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

For details on how to apply this update, refer to:

https://access.redhat.com/articles/11258

Affected Products

• Red Hat Enterprise Linux Server 6 x86_64
• Red Hat Enterprise Linux Server 6 i386
• Red Hat Enterprise Linux Workstation 6 x86_64
• Red Hat Enterprise Linux Workstation 6 i386
• Red Hat Enterprise Linux Desktop 6 i386
• Red Hat Enterprise Linux for IBM z Systems 6 s390x
• Red Hat Enterprise Linux for Power, big endian 6 ppc64
• Red Hat Enterprise Linux for Scientific Computing 6 x86_64
• Red Hat Enterprise Linux Server from RHUI 6 x86_64
• Red Hat Enterprise Linux Server from RHUI 6 i386
• Red Hat Enterprise Linux Server - Extended Life Cycle Support 6 x86_64
• Red Hat Enterprise Linux Server - Extended Life Cycle Support 6 i386
• Red Hat Enterprise Linux Desktop 6 x86_64
• Red Hat Enterprise Linux Server - Extended Life Cycle Support (for IBM z Systems) 6 s390x
• Red Hat Enterprise Linux Server - Extended Life Cycle Support Extension 6 x86_64
• Red Hat Enterprise Linux Server - Extended Life Cycle Support Extension 6 i386
• Red Hat Enterprise Linux Server - Extended Life Cycle Support Extension (for IBM z Systems) 6 s390x

Fixes

• BZ - 794632 - Python 2.6 installation is not 64 bit clean
• BZ - 1046174 - CVE-2013-1752 python: multiple unbound readline() DoS flaws in python stdlib
• BZ - 1062370 - CVE-2014-1912 python: buffer overflow in socket.recvfrom_into()
• BZ - 1073165 - subprocess.Popen.communicate() fails with: IOError: [Errno 4] Interrupted system call
• BZ - 1113527 - CVE-2014-4650 python: CGIHTTPServer module does not properly handle URL-encoded path separators in URLs
• BZ - 1146026 - CVE-2014-7185 python: buffer() integer overflow leading to out of bounds read
• BZ - 1160640 - cProfile main() traceback if options syntax is invalid
• BZ - 1180864 - multiprocessing BaseManager serve_client() does not check EINTR on recv
• BZ - 1199997 - python-libs should have "Provides: python-ordereddict"
• BZ - 1223037 - Python raises exception on deepcopy of instance methods

CVEs

• CVE-2014-7185
• CVE-2013-1752
• CVE-2014-1912
• CVE-2014-4650

References

• https://access.redhat.com/security/updates/classification/#moderate
• https://access.redhat.com/articles/1495363