RHEL 7 : libtirpc (RHSA-2017:1263)

This script is Copyright (C) 2017 Tenable Network Security, Inc.


Synopsis :

The remote Red Hat host is missing one or more security updates.

Description :

An update for libtirpc is now available for Red Hat Enterprise Linux
7.

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 libtirpc packages contain SunLib's implementation of
transport-independent remote procedure call (TI-RPC) documentation,
which includes a library required by programs in the nfs-utils and
rpcbind packages.

Security Fix(es) :

* 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)

See also :

https://www.redhat.com/security/data/cve/CVE-2017-8779.html
http://rhn.redhat.com/errata/RHSA-2017-1263.html

Solution :

Update the affected libtirpc, libtirpc-debuginfo and / or
libtirpc-devel packages.

Risk factor :

High / CVSS Base Score : 7.8
(CVSS2#AV:N/AC:L/Au:N/C:N/I:N/A:C)
CVSS Temporal Score : 7.4
(CVSS2#E:F/RL:U/RC:ND)
Public Exploit Available : true

Family: Red Hat Local Security Checks

Nessus Plugin ID: 100318 ()

Bugtraq ID:

CVE ID: CVE-2017-8779

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