Logwatch analyzes and reports on system logs.
logwatch.pl does not properly sanitize log filenames against shell metacharacters before passing them to the "system()" function.
A remote attacker could pass a specially crafted log filename to Logwatch, possibly resulting in execution of arbitrary code with root privileges or a Denial of Service condition.
There is no known workaround at this time.
All Logwatch users should upgrade to the latest version:
# emerge --sync
# emerge --ask --oneshot --verbose ">=sys-apps/logwatch-7.4.0"