RedHat Powertools: 'sudo' Local buffer overflow vulnerability
Posted by LinuxSecurity.com Team   
RedHat Linux Updated sudo packages are available which fix a local root exploit.

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                   Red Hat, Inc. Red Hat Security Advisory

Synopsis:          Updated sudo packages are available
Advisory ID:       RHSA-2002:072-07
Issue date:        2002-04-22
Updated on:        2002-04-25
Product:           Red Hat Powertools
Keywords:          sudo off-by-five heap local root
Cross references:  RHSA-2002:071
Obsoletes:         RHSA-2002:013
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1. Topic:

Updated sudo packages are available which fix a local root exploit.

2. Relevant releases/architectures:

Red Hat Powertools 6.2 - alpha, i386, sparc

3. Problem description:

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

Global InterSec LLC found an issue with Sudo 1.6.5p2 and earlier which can
be exploited to allow a local attacker to gain root privileges.

The Common Vulnerabilities and Exposures project (cve.mitre.org) has
assigned the name CAN-2002-0184 to this issue.

Users of Sudo are advised to upgrade to these errata packages which are not
vulnerable to this issue.

4. Solution:

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

To update all RPMs for your particular architecture, run:

rpm -Fvh [filenames]

where [filenames] is a list of the RPMs you wish to upgrade.  Only those
RPMs which are currently installed will be updated.  Those RPMs which are
not installed but included in the list will not be updated.  Note that you
can also use wildcards (*.rpm) if your current directory *only* contains the
desired RPMs.

Please note that this update is also available via Red Hat Network.  Many
people find this an easier way to apply updates.  To use Red Hat Network,
launch the Red Hat Update Agent with the following command:

up2date

This will start an interactive process that will result in the appropriate
RPMs being upgraded on your system.

5. Bug IDs fixed  (http://bugzilla.Red Hat.com/bugzilla for more info):



6. RPMs required:

Red Hat Powertools 6.2:

SRPMS: 
ftp://updates.Red Hat.com/6.2/en/powertools/SRPMS/sudo-1.6.5p2-1.6x.1.src.rpm

alpha: 
ftp://updates.Red Hat.com/6.2/en/powertools/alpha/sudo-1.6.5p2-1.6x.1.alpha.rpm

i386: 
ftp://updates.Red Hat.com/6.2/en/powertools/i386/sudo-1.6.5p2-1.6x.1.i386.rpm

sparc: 
ftp://updates.Red Hat.com/6.2/en/powertools/sparc/sudo-1.6.5p2-1.6x.1.sparc.rpm


7. Verification:

MD5 sum                          Package Name
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396232986eee0e931507052c618ded11 6.2/en/powertools/SRPMS/sudo-1.6.5p2-1.6x.1.src.rpm
0cf88c95cefdfaa6d442b1165ade110d 6.2/en/powertools/alpha/sudo-1.6.5p2-1.6x.1.alpha.rpm
be8e7188bf17c3e30dd563c77bf42d72 6.2/en/powertools/i386/sudo-1.6.5p2-1.6x.1.i386.rpm
425255b31999a3172e6b3d6a5282427f 6.2/en/powertools/sparc/sudo-1.6.5p2-1.6x.1.sparc.rpm 

These packages are GPG signed by Red Hat, Inc. for security.  Our key
is available at:
     http://www.Red Hat.com/about/contact/pgpkey.html

You can verify each package with the following command:
    rpm --checksig  

If you only wish to verify that each package has not been corrupted or
tampered with, examine only the md5sum with the following command:
    rpm --checksig --nogpg 

8. References:
 
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CAN-2002-0184 
http://www.globalintersec.com/adv/sudo-2002041701.txt


Copyright(c) 2000, 2001, 2002 Red Hat, Inc.