Summary
The remote host is missing updates announced in
advisory GLSA 200504-06.
Solution
All sharutils users should upgrade to the latest version:
# emerge --sync
# emerge --ask --oneshot --verbose '>=app-arch/sharutils-4.2.1-r11'
http://www.securityspace.com/smysecure/catid.html?in=GLSA%20200504-06 http://bugs.gentoo.org/show_bug.cgi?id=87939
http://www.ubuntulinux.org/support/documentation/usn/usn-104-1
Insight
The unshar utility is vulnerable to symlink attacks, potentially allowing a local user to overwrite arbitrary files.
