An update for rpcbind is now available for Red Hat Enterprise Linux 6.
Red Hat Product Security has rated this update as having a security impact of
Important. A Common Vulnerability Scoring System (CVSS) base score, which gives
a detailed severity rating, is available for each vulnerability from the CVE
link(s) in the References section.
The rpcbind utility is a server that converts Remote Procedure Call (RPC)
program numbers into universal addresses. It must be running on the host to be
able to make RPC calls on a server on that machine.
* It was found that due to the way rpcbind uses libtirpc (libntirpc), a memory
leak can occur when parsing specially crafted XDR messages. An attacker sending
thousands of messages to rpcbind could cause its memory usage to grow without
bound, eventually causing it to be terminated by the OOM killer. (CVE-2017-8779)
1448124 – CVE-2017-8779 rpcbind, libtirpc, libntirpc: Memory leak when failing to parse XDR strings or bytearrays