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RedHat 5 & 6: RHSA-2012-1081-01 Moderate: Sudo Network Flaw

red hat
Calendar Grey July 16, 2012
Scroller Redhat
A new sudo update for CentOS resolves a significant vulnerability. Make certain your systems are secured thoroughly.
An updated sudo package that fixes one security issue is now available for Red Hat Enterprise Linux 5 and 6

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

Summary

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.

Topics%20covered

Topics Covered

security advisory Red Hat network flaw moderate impact sudo

References

https://access.redhat.com/security/cve/CVE-2012-2337 https://access.redhat.com/security/updates/classification#moderate

Package List

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

Read the Full Advisory


Advisory ID: RHSA-2012:1081-01
Product: Red Hat Enterprise Linux
Advisory URL: https://access.redhat.com/errata/RHSA-2012:1081.html
Issue date: 2012-07-16

Topic

An updated sudo package that fixes one security issue is now available forRed Hat Enterprise Linux 5 and 6.The Red Hat Security Response Team has rated this update as having moderatesecurity impact. A Common Vulnerability Scoring System (CVSS) base score,which gives a detailed severity rating, is available from the CVE link inthe References section.

Topics%20covered

Topics Covered

security advisory Red Hat network flaw moderate impact sudo

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

Bugs Fixed

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

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