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Red Hat Security Advisory 2017-1263-01

Red Hat Security Advisory 2017-1263-01
Posted May 22, 2017
Authored by Red Hat | Site access.redhat.com

Red Hat Security Advisory 2017-1263-01 - The libtirpc packages contain SunLib's implementation of transport-independent remote procedure call documentation, which includes a library required by programs in the nfs-utils and rpcbind packages. Security Fix: It was found that due to the way rpcbind uses libtirpc, 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.

tags | advisory, remote, memory leak
systems | linux, redhat
advisories | CVE-2017-8779
SHA-256 | 49d9acba01c695412d6018d26794d50acb5f77b1730e133e0169fa768d25b526

Red Hat Security Advisory 2017-1263-01

Change Mirror Download

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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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