nfdump is a toolset in order to collect and process netflow and sflow data, sent from netflow/sflow compatible devices.
Multiple vulnerabilities have been discovered in nfdump. Please review the CVE identifiers referenced below for details.
A remote attacker, by sending specially crafted netflow/sflow data, could possibly execute arbitrary code with the privileges of the process or cause a Denial of Service condition.
There is no known workaround at this time.
All nfdump users should upgrade to the latest version:
# emerge --sync
# emerge --ask --oneshot --verbose ">=net-analyzer/nfdump-1.6.19"