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Home » Hacking News » RHSA-2002:054-09-Race conditions in logwatch

RHSA-2002:054-09-Race conditions in logwatch

by Nikola Strahija on April 5th, 2002 Updated LogWatch packages are available that fix tmp file race conditions which can cause a local user to gain root privileges.

2. Relevant releases/architectures:

Red Hat Powertools 6.2 - noarch

Red Hat Powertools 7.0 - noarch

Red Hat Powertools 7.1 - noarch

3. Problem description:

LogWatch is a customizable log analysis system which was available in Red
Hat Powertools.

Versions of LogWatch 2.1.1 and earlier have a vulnerability due to a race
condition during the creation of a temporary directory. This vulnerability
can allow a local user to gain root privileges. An additional race
condition was found in versions of LogWatch 2.5 and earlier.

Users should update to the errata packages containing Logwatch 2.6, which
is not vulnerable to these issues.

The Common Vulnerabilities and Exposures project ( has
assigned the names CAN-2002-0162 and CAN-2002-0165 to these issues.

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
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:


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

5. Bug IDs fixed ( for more info):

62055 - A /tmp race condition leads to root
46371 - Handle accepted packets, not just reject and deny
56191 - logwatch is too noisy
58578 - Problem with RPM dependance
61202 - Logwatch logs appear to have emerged themselves with other logfiles.
They are semi-unreadable
61829 - logwatch's sshd filter should scan secure logs
61831 - logwatch modprobe filter should allow dashes in module names
61832 - secure filter should ignore sshd messages

6. RPMs required:

Red Hat Powertools 6.2:



Red Hat Powertools 7.0:



Red Hat Powertools 7.1:



7. Verification:

MD5 sum Package Name
bb75f22ed70447d6a46d5d5b2a7ec7aa 6.2/en/powertools/SRPMS/logwatch-2.6-1.src.rpm
bb75f22ed70447d6a46d5d5b2a7ec7aa 7.0/en/powertools/SRPMS/logwatch-2.6-1.src.rpm
bb75f22ed70447d6a46d5d5b2a7ec7aa 7.1/en/powertools/SRPMS/logwatch-2.6-1.src.rpm

These packages are GPG signed by Red Hat, Inc. for security. Our key
is available at:

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:

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

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