Pronađen je sigurnosni propust prilikom korištenja naredbe sudo koja omogućava zlonamjernom korisniku izvođenje naredbi na računalu za koji nema root pristup.

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=====================================================================
                   Red Hat Security Advisory

Synopsis:          Moderate: sudo security update
Advisory ID:       RHSA-2012:1081-01
Product:           Red Hat Enterprise Linux
Advisory URL:      https://rhn.redhat.com/errata/RHSA-2012-1081.html
Issue date:        2012-07-16
CVE Names:         CVE-2012-2337 
=====================================================================

1. Summary:

An updated sudo package that fixes one security issue is now available for
Red Hat Enterprise Linux 5 and 6.

The Red Hat Security Response Team has rated this update as having moderate
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 (v. 5 server) - i386, ia64, ppc, s390x, x86_64
Red Hat Enterprise Linux Desktop (v. 5 client) - i386, x86_64
Red Hat Enterprise Linux Desktop (v. 6) - i386, x86_64
Red Hat Enterprise Linux HPC Node (v. 6) - x86_64
Red Hat Enterprise Linux Server (v. 6) - i386, ppc64, s390x, x86_64
Red Hat Enterprise Linux Workstation (v. 6) - i386, x86_64

3. Description:

The sudo (superuser do) utility allows system administrators to give
certain users the ability to run commands as root.

A flaw was found in the way the network matching code in sudo handled
multiple IP networks listed in user specification configuration directives.
A user, who is authorized to run commands with sudo on specific hosts,
could use this flaw to bypass intended restrictions and run those commands
on hosts not matched by any of the network specifications. (CVE-2012-2337)

All users of sudo 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/knowledge/articles/11258

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

820677 - CVE-2012-2337 sudo: Multiple netmask values used in Host / Host_List
configuration cause any host to be allowed access

6. Package List:

Red Hat Enterprise Linux Desktop (v. 5 client):

Source:
ftp://ftp.redhat.com/pub/redhat/linux/enterprise/5Client/en/os/SRPMS/sudo-1.7.2p1-14.el5_8.src.rpm

i386:
sudo-1.7.2p1-14.el5_8.i386.rpm
sudo-debuginfo-1.7.2p1-14.el5_8.i386.rpm

x86_64:
sudo-1.7.2p1-14.el5_8.x86_64.rpm
sudo-debuginfo-1.7.2p1-14.el5_8.x86_64.rpm

Red Hat Enterprise Linux (v. 5 server):

Source:
ftp://ftp.redhat.com/pub/redhat/linux/enterprise/5Server/en/os/SRPMS/sudo-1.7.2p1-14.el5_8.src.rpm

i386:
sudo-1.7.2p1-14.el5_8.i386.rpm
sudo-debuginfo-1.7.2p1-14.el5_8.i386.rpm

ia64:
sudo-1.7.2p1-14.el5_8.ia64.rpm
sudo-debuginfo-1.7.2p1-14.el5_8.ia64.rpm

ppc:
sudo-1.7.2p1-14.el5_8.ppc.rpm
sudo-debuginfo-1.7.2p1-14.el5_8.ppc.rpm

s390x:
sudo-1.7.2p1-14.el5_8.s390x.rpm
sudo-debuginfo-1.7.2p1-14.el5_8.s390x.rpm

x86_64:
sudo-1.7.2p1-14.el5_8.x86_64.rpm
sudo-debuginfo-1.7.2p1-14.el5_8.x86_64.rpm

Red Hat Enterprise Linux Desktop (v. 6):

Source:
ftp://ftp.redhat.com/pub/redhat/linux/enterprise/6Client/en/os/SRPMS/sudo-1.7.4p5-12.el6_3.src.rpm

i386:
sudo-1.7.4p5-12.el6_3.i686.rpm
sudo-debuginfo-1.7.4p5-12.el6_3.i686.rpm

x86_64:
sudo-1.7.4p5-12.el6_3.x86_64.rpm
sudo-debuginfo-1.7.4p5-12.el6_3.x86_64.rpm

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

Source:
ftp://ftp.redhat.com/pub/redhat/linux/enterprise/6ComputeNode/en/os/SRPMS/sudo-1.7.4p5-12.el6_3.src.rpm

x86_64:
sudo-1.7.4p5-12.el6_3.x86_64.rpm
sudo-debuginfo-1.7.4p5-12.el6_3.x86_64.rpm

Red Hat Enterprise Linux Server (v. 6):

Source:
ftp://ftp.redhat.com/pub/redhat/linux/enterprise/6Server/en/os/SRPMS/sudo-1.7.4p5-12.el6_3.src.rpm

i386:
sudo-1.7.4p5-12.el6_3.i686.rpm
sudo-debuginfo-1.7.4p5-12.el6_3.i686.rpm

ppc64:
sudo-1.7.4p5-12.el6_3.ppc64.rpm
sudo-debuginfo-1.7.4p5-12.el6_3.ppc64.rpm

s390x:
sudo-1.7.4p5-12.el6_3.s390x.rpm
sudo-debuginfo-1.7.4p5-12.el6_3.s390x.rpm

x86_64:
sudo-1.7.4p5-12.el6_3.x86_64.rpm
sudo-debuginfo-1.7.4p5-12.el6_3.x86_64.rpm

Red Hat Enterprise Linux Workstation (v. 6):

Source:
ftp://ftp.redhat.com/pub/redhat/linux/enterprise/6Workstation/en/os/SRPMS/sudo-1.7.4p5-12.el6_3.src.rpm

i386:
sudo-1.7.4p5-12.el6_3.i686.rpm
sudo-debuginfo-1.7.4p5-12.el6_3.i686.rpm

x86_64:
sudo-1.7.4p5-12.el6_3.x86_64.rpm
sudo-debuginfo-1.7.4p5-12.el6_3.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-2012-2337.html
https://access.redhat.com/security/updates/classification/#moderate
http://www.sudo.ws/sudo/alerts/netmask.html

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 2012 Red Hat, Inc.
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