Issued:
2017-05-23
Updated:
2017-06-16

RHSA-2017:1267 - Important: rpcbind security update

Synopsis

Important: rpcbind security update

Type/Severity

Security Advisory Important

Topic

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.

[Updated 16 June 2017] The packages distributed with this errata have a bug that can cause the rpcbind utility to terminate unexpectedly at start. RHBA-2017:1435 was released on 13 June 2017 to address this issue.

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)

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

Affected Products

ProductVersionArch
Red Hat Enterprise Linux for Scientific Computing6x86_64
Red Hat Enterprise Linux for Power, big endian6ppc64
Red Hat Enterprise Linux for IBM z Systems6s390x
Red Hat Enterprise Linux Workstation6x86_64
Red Hat Enterprise Linux Workstation6i386
Red Hat Enterprise Linux Server6x86_64
Red Hat Enterprise Linux Server6i386
Red Hat Enterprise Linux Server - Extended Life Cycle Support6x86_64
Red Hat Enterprise Linux Server - Extended Life Cycle Support6i386
Red Hat Enterprise Linux Server - Extended Life Cycle Support Extension6x86_64
Red Hat Enterprise Linux Server - Extended Life Cycle Support Extension6i386
Red Hat Enterprise Linux Server - Extended Life Cycle Support Extension (for IBM z Systems)6s390x
Red Hat Enterprise Linux Server - Extended Life Cycle Support (for IBM z Systems)6s390x
Red Hat Enterprise Linux Desktop6x86_64
Red Hat Enterprise Linux Desktop6i386

Updated Packages

  • rpcbind-0.2.0-13.el6_9.s390x.rpm
  • rpcbind-0.2.0-13.el6_9.x86_64.rpm
  • rpcbind-debuginfo-0.2.0-13.el6_9.ppc64.rpm
  • rpcbind-0.2.0-13.el6_9.src.rpm
  • rpcbind-0.2.0-13.el6_9.i686.rpm
  • rpcbind-debuginfo-0.2.0-13.el6_9.x86_64.rpm
  • rpcbind-debuginfo-0.2.0-13.el6_9.s390x.rpm
  • rpcbind-debuginfo-0.2.0-13.el6_9.i686.rpm
  • rpcbind-0.2.0-13.el6_9.ppc64.rpm

Fixes

CVEs

References

Additional information