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Red Hat Security Advisory

 

Synopsis: Important: rpcbind security update

Advisory ID: RHSA-2017:1262-01

Product: Red Hat Enterprise Linux

Advisory URL: https://access.redhat.com/errata/RHSA-2017:1262

Issue date: 2017-05-22

CVE Names: CVE-2017-8779

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1. Summary:

 

An update for rpcbind 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 ComputeNode (v. 7) - x86_64

Red Hat Enterprise Linux Server (v. 7) - aarch64, ppc64, ppc64le, s390x, x86_64

Red Hat Enterprise Linux Workstation (v. 7) - x86_64

 

3. Description:

 

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.

 

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:

rpcbind-0.2.0-38.el7_3.src.rpm

 

x86_64:

rpcbind-0.2.0-38.el7_3.x86_64.rpm

rpcbind-debuginfo-0.2.0-38.el7_3.x86_64.rpm

 

Red Hat Enterprise Linux ComputeNode (v. 7):

 

Source:

rpcbind-0.2.0-38.el7_3.src.rpm

 

x86_64:

rpcbind-0.2.0-38.el7_3.x86_64.rpm

rpcbind-debuginfo-0.2.0-38.el7_3.x86_64.rpm

 

Red Hat Enterprise Linux Server (v. 7):

 

Source:

rpcbind-0.2.0-38.el7_3.src.rpm

 

aarch64:

rpcbind-0.2.0-38.el7_3.aarch64.rpm

rpcbind-debuginfo-0.2.0-38.el7_3.aarch64.rpm

 

ppc64:

rpcbind-0.2.0-38.el7_3.ppc64.rpm

rpcbind-debuginfo-0.2.0-38.el7_3.ppc64.rpm

 

ppc64le:

rpcbind-0.2.0-38.el7_3.ppc64le.rpm

rpcbind-debuginfo-0.2.0-38.el7_3.ppc64le.rpm

 

s390x:

rpcbind-0.2.0-38.el7_3.s390x.rpm

rpcbind-debuginfo-0.2.0-38.el7_3.s390x.rpm

 

x86_64:

rpcbind-0.2.0-38.el7_3.x86_64.rpm

rpcbind-debuginfo-0.2.0-38.el7_3.x86_64.rpm

 

Red Hat Enterprise Linux Workstation (v. 7):

 

Source:

rpcbind-0.2.0-38.el7_3.src.rpm

 

x86_64:

rpcbind-0.2.0-38.el7_3.x86_64.rpm

rpcbind-debuginfo-0.2.0-38.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 . More contact

details at https://access.redhat.com/security/team/contact/

 

Copyright 2017 Red Hat, Inc.

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