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Red Hat Security Advisory
Synopsis: Important: mod_wsgi security update
Advisory ID: RHSA-2014:1091-01
Product: Red Hat Enterprise Linux
Advisory URL: https://rhn.redhat.com/errata/RHSA-2014-1091.html
Issue date: 2014-08-25
CVE Names: CVE-2014-0240
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1. Summary:
An updated mod_wsgi package that fixes one security issue is now available
for Red Hat Enterprise Linux 7.
Red Hat Product Security has rated this update as having Important security
impact. A Common Vulnerability Scoring System (CVSS) base score, which
gives a detailed severity rating, is available from the CVE link in the
References section.
2. Relevant releases/architectures:
Red Hat Enterprise Linux Client Optional (v. 7) – x86_64
Red Hat Enterprise Linux ComputeNode Optional (v. 7) – x86_64
Red Hat Enterprise Linux Server (v. 7) – ppc64, s390x, x86_64
Red Hat Enterprise Linux Workstation (v. 7) – x86_64
3. Description:
The mod_wsgi adapter is an Apache module that provides a WSGI-compliant
interface for hosting Python-based web applications within Apache.
It was found that mod_wsgi did not properly drop privileges if the call to
setuid() failed. If mod_wsgi was set up to allow unprivileged users to run
WSGI applications, a local user able to run a WSGI application could
possibly use this flaw to escalate their privileges on the system.
(CVE-2014-0240)
Note: mod_wsgi is not intended to provide privilege separation for WSGI
applications. Systems relying on mod_wsgi to limit or sandbox the
privileges of mod_wsgi applications should migrate to a different solution
with proper privilege separation.
Red Hat would like to thank Graham Dumpleton for reporting this issue.
Upstream acknowledges Róbert Kisteleki as the original reporter.
All mod_wsgi users are advised to upgrade to this updated package, which
contains a backported patch to correct this issue.
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/articles/11258
5. Bugs fixed (https://bugzilla.redhat.com/):
1101863 – CVE-2014-0240 mod_wsgi: possible privilege escalation in setuid() failure scenarios
6. Package List:
Red Hat Enterprise Linux Client Optional (v. 7):
Source:
mod_wsgi-3.4-12.el7_0.src.rpm
x86_64:
mod_wsgi-3.4-12.el7_0.x86_64.rpm
mod_wsgi-debuginfo-3.4-12.el7_0.x86_64.rpm
Red Hat Enterprise Linux ComputeNode Optional (v. 7):
Source:
mod_wsgi-3.4-12.el7_0.src.rpm
x86_64:
mod_wsgi-3.4-12.el7_0.x86_64.rpm
mod_wsgi-debuginfo-3.4-12.el7_0.x86_64.rpm
Red Hat Enterprise Linux Server (v. 7):
Source:
mod_wsgi-3.4-12.el7_0.src.rpm
ppc64:
mod_wsgi-3.4-12.el7_0.ppc64.rpm
mod_wsgi-debuginfo-3.4-12.el7_0.ppc64.rpm
s390x:
mod_wsgi-3.4-12.el7_0.s390x.rpm
mod_wsgi-debuginfo-3.4-12.el7_0.s390x.rpm
x86_64:
mod_wsgi-3.4-12.el7_0.x86_64.rpm
mod_wsgi-debuginfo-3.4-12.el7_0.x86_64.rpm
Red Hat Enterprise Linux Workstation (v. 7):
Source:
mod_wsgi-3.4-12.el7_0.src.rpm
x86_64:
mod_wsgi-3.4-12.el7_0.x86_64.rpm
mod_wsgi-debuginfo-3.4-12.el7_0.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-2014-0240.html
https://access.redhat.com/security/updates/classification/#important
8. Contact:
The Red Hat security contact is <secalert@redhat.com>. More contact
details at https://access.redhat.com/security/team/contact/
Copyright 2014 Red Hat, Inc.
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