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Red Hat, Inc. Red Hat Security Advisory
Synopsis: Updated sudo package is available
Advisory ID: RHSA-2002:013-03
Issue date: 2002-01-14
Updated on: 2002-01-14
Product: Red Hat Powertools
Keywords: sudo environment root exploit
Cross references: RHSA-2002:011
Obsoletes:
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1. Topic:
This updated sudo package fixes a potential local root exploit.
2. Relevant releases/architectures:
Red Hat Powertools 6.2 - alpha, i386, sparc
3. Problem description:
Versions of sudo prior to 1.6.4 would not clear the environment before
sending an email notification about unauthorized sudo attempts, making it
possible for an attacker to supply parameters to the mail program. In the
worst case, this could lead to a local root exploit.
Users of sudo are advised to upgrade to version 1.6.4, which is 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.redhat.com/bugzilla for more info):
6. RPMs required:
Red Hat Powertools 6.2:
SRPMS:
ftp://updates.redhat.com/6.2/en/powertools/SRPMS/sudo-1.6.4-0.6x.2.src.rpm
alpha:
ftp://updates.redhat.com/6.2/en/powertools/alpha/sudo-1.6.4-0.6x.2.alpha.rpm
i386:
ftp://updates.redhat.com/6.2/en/powertools/i386/sudo-1.6.4-0.6x.2.i386.rpm
sparc:
ftp://updates.redhat.com/6.2/en/powertools/sparc/sudo-1.6.4-0.6x.2.sparc.rpm
7. Verification:
MD5 sum Package Name
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f392e76c338e57c92d86d392ec79bae8 6.2/en/powertools/SRPMS/sudo-1.6.4-0.6x.2.src.rpm
72db8fbf661746bebbab87de50183b35 6.2/en/powertools/alpha/sudo-1.6.4-0.6x.2.alpha.rpm
78c9a8dcd055d709030b072dc44259bb 6.2/en/powertools/i386/sudo-1.6.4-0.6x.2.i386.rpm
7ff399944c2185843c76533b97a06528 6.2/en/powertools/sparc/sudo-1.6.4-0.6x.2.sparc.rpm
These packages are GPG signed by Red Hat, Inc. for security. Our key
is available at:
http://www.redhat.com/about/contact/pgpkey.html
You can verify each package with the following command:
rpm --checksig <filename>
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 <filename>
8. References:
http://www.courtesan.com/sudo/sudo.html
Copyright(c) 2000, 2001, 2002 Red Hat, Inc.
