Summary
The remote host is missing updates announced in
advisory GLSA 200412-20.
Solution
All NASM users should upgrade to the latest version:
# emerge --sync
# emerge --ask --oneshot --verbose '>=dev-lang/nasm-0.98.38-r1'
http://www.securityspace.com/smysecure/catid.html?in=GLSA%20200412-20 http://bugs.gentoo.org/show_bug.cgi?id=74477
http://sourceforge.net/mailarchive/forum.php?thread_id=6166881&forum_id=4978
Insight
NASM is vulnerable to a buffer overflow that allows an attacker to execute arbitrary code through the use of a malicious object file.