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AUSCERT External Security Bulletin Redistribution
ESB-2017.1310
Important: libtirpc security update
23 May 2017
===========================================================================
AusCERT Security Bulletin Summary
---------------------------------
Product: libtirpc
Publisher: Red Hat
Operating System: Red Hat Enterprise Linux Server 7
Red Hat Enterprise Linux WS/Desktop 7
Impact/Access: Denial of Service -- Remote/Unauthenticated
Resolution: Patch/Upgrade
CVE Names: CVE-2017-8779
Reference: ESB-2017.1309
ESB-2017.1278
ESB-2017.1241
Original Bulletin:
https://access.redhat.com/errata/RHSA-2017:1263
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Red Hat Security Advisory
Synopsis: Important: libtirpc security update
Advisory ID: RHSA-2017:1263-01
Product: Red Hat Enterprise Linux
Advisory URL: https://access.redhat.com/errata/RHSA-2017:1263
Issue date: 2017-05-22
CVE Names: CVE-2017-8779
=====================================================================
1. Summary:
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.
2. Relevant releases/architectures:
Red Hat Enterprise Linux Client (v. 7) - x86_64
Red Hat Enterprise Linux Client Optional (v. 7) - x86_64
Red Hat Enterprise Linux ComputeNode (v. 7) - x86_64
Red Hat Enterprise Linux ComputeNode Optional (v. 7) - x86_64
Red Hat Enterprise Linux Server (v. 7) - aarch64, ppc64, ppc64le, s390x, x86_64
Red Hat Enterprise Linux Server Optional (v. 7) - aarch64, ppc64, ppc64le, s390x, x86_64
Red Hat Enterprise Linux Workstation (v. 7) - x86_64
Red Hat Enterprise Linux Workstation Optional (v. 7) - x86_64
3. Description:
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)
4. Solution:
For details on how to apply this update, which includes the changes
described in this advisory, refer to:
https://access.redhat.com/articles/11258
5. Bugs fixed (https://bugzilla.redhat.com/):
1448124 - CVE-2017-8779 rpcbind, libtirpc, libntirpc: Memory leak when failing to parse XDR strings or bytearrays
6. Package List:
Red Hat Enterprise Linux Client (v. 7):
Source:
libtirpc-0.2.4-0.8.el7_3.src.rpm
x86_64:
libtirpc-0.2.4-0.8.el7_3.i686.rpm
libtirpc-0.2.4-0.8.el7_3.x86_64.rpm
libtirpc-debuginfo-0.2.4-0.8.el7_3.i686.rpm
libtirpc-debuginfo-0.2.4-0.8.el7_3.x86_64.rpm
Red Hat Enterprise Linux Client Optional (v. 7):
x86_64:
libtirpc-debuginfo-0.2.4-0.8.el7_3.i686.rpm
libtirpc-debuginfo-0.2.4-0.8.el7_3.x86_64.rpm
libtirpc-devel-0.2.4-0.8.el7_3.i686.rpm
libtirpc-devel-0.2.4-0.8.el7_3.x86_64.rpm
Red Hat Enterprise Linux ComputeNode (v. 7):
Source:
libtirpc-0.2.4-0.8.el7_3.src.rpm
x86_64:
libtirpc-0.2.4-0.8.el7_3.i686.rpm
libtirpc-0.2.4-0.8.el7_3.x86_64.rpm
libtirpc-debuginfo-0.2.4-0.8.el7_3.i686.rpm
libtirpc-debuginfo-0.2.4-0.8.el7_3.x86_64.rpm
Red Hat Enterprise Linux ComputeNode Optional (v. 7):
x86_64:
libtirpc-debuginfo-0.2.4-0.8.el7_3.i686.rpm
libtirpc-debuginfo-0.2.4-0.8.el7_3.x86_64.rpm
libtirpc-devel-0.2.4-0.8.el7_3.i686.rpm
libtirpc-devel-0.2.4-0.8.el7_3.x86_64.rpm
Red Hat Enterprise Linux Server (v. 7):
Source:
libtirpc-0.2.4-0.8.el7_3.src.rpm
aarch64:
libtirpc-0.2.4-0.8.el7_3.aarch64.rpm
libtirpc-debuginfo-0.2.4-0.8.el7_3.aarch64.rpm
ppc64:
libtirpc-0.2.4-0.8.el7_3.ppc.rpm
libtirpc-0.2.4-0.8.el7_3.ppc64.rpm
libtirpc-debuginfo-0.2.4-0.8.el7_3.ppc.rpm
libtirpc-debuginfo-0.2.4-0.8.el7_3.ppc64.rpm
ppc64le:
libtirpc-0.2.4-0.8.el7_3.ppc64le.rpm
libtirpc-debuginfo-0.2.4-0.8.el7_3.ppc64le.rpm
s390x:
libtirpc-0.2.4-0.8.el7_3.s390.rpm
libtirpc-0.2.4-0.8.el7_3.s390x.rpm
libtirpc-debuginfo-0.2.4-0.8.el7_3.s390.rpm
libtirpc-debuginfo-0.2.4-0.8.el7_3.s390x.rpm
x86_64:
libtirpc-0.2.4-0.8.el7_3.i686.rpm
libtirpc-0.2.4-0.8.el7_3.x86_64.rpm
libtirpc-debuginfo-0.2.4-0.8.el7_3.i686.rpm
libtirpc-debuginfo-0.2.4-0.8.el7_3.x86_64.rpm
Red Hat Enterprise Linux Server Optional (v. 7):
aarch64:
libtirpc-debuginfo-0.2.4-0.8.el7_3.aarch64.rpm
libtirpc-devel-0.2.4-0.8.el7_3.aarch64.rpm
ppc64:
libtirpc-debuginfo-0.2.4-0.8.el7_3.ppc.rpm
libtirpc-debuginfo-0.2.4-0.8.el7_3.ppc64.rpm
libtirpc-devel-0.2.4-0.8.el7_3.ppc.rpm
libtirpc-devel-0.2.4-0.8.el7_3.ppc64.rpm
ppc64le:
libtirpc-debuginfo-0.2.4-0.8.el7_3.ppc64le.rpm
libtirpc-devel-0.2.4-0.8.el7_3.ppc64le.rpm
s390x:
libtirpc-debuginfo-0.2.4-0.8.el7_3.s390.rpm
libtirpc-debuginfo-0.2.4-0.8.el7_3.s390x.rpm
libtirpc-devel-0.2.4-0.8.el7_3.s390.rpm
libtirpc-devel-0.2.4-0.8.el7_3.s390x.rpm
x86_64:
libtirpc-debuginfo-0.2.4-0.8.el7_3.i686.rpm
libtirpc-debuginfo-0.2.4-0.8.el7_3.x86_64.rpm
libtirpc-devel-0.2.4-0.8.el7_3.i686.rpm
libtirpc-devel-0.2.4-0.8.el7_3.x86_64.rpm
Red Hat Enterprise Linux Workstation (v. 7):
Source:
libtirpc-0.2.4-0.8.el7_3.src.rpm
x86_64:
libtirpc-0.2.4-0.8.el7_3.i686.rpm
libtirpc-0.2.4-0.8.el7_3.x86_64.rpm
libtirpc-debuginfo-0.2.4-0.8.el7_3.i686.rpm
libtirpc-debuginfo-0.2.4-0.8.el7_3.x86_64.rpm
Red Hat Enterprise Linux Workstation Optional (v. 7):
x86_64:
libtirpc-debuginfo-0.2.4-0.8.el7_3.i686.rpm
libtirpc-debuginfo-0.2.4-0.8.el7_3.x86_64.rpm
libtirpc-devel-0.2.4-0.8.el7_3.i686.rpm
libtirpc-devel-0.2.4-0.8.el7_3.x86_64.rpm
These packages are GPG signed by Red Hat for security. Our key and
details on how to verify the signature are available from
https://access.redhat.com/security/team/key/
7. References:
https://access.redhat.com/security/cve/CVE-2017-8779
https://access.redhat.com/security/updates/classification/#important
8. Contact:
The Red Hat security contact is <secalert@redhat.com>. More contact
details at https://access.redhat.com/security/team/contact/
Copyright 2017 Red Hat, Inc.
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