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Red Hat 7: RHSA-2017-1263-01 Important: Libtirpc Memory Leak Fix

red hat
Calendar Grey May 22, 2017
Scroller Redhat
Red Hat has published an update for libtirpc that tackles a critical security vulnerability associated with memory leakage in rpcbind.
An update for libtirpc is now available for Red Hat Enterprise Linux 7

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

Summary

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)

Topics%20covered

Topics Covered

security advisory Red Hat memory leak libtirpc rpcbind

References

https://access.redhat.com/security/cve/CVE-2017-8779 https://access.redhat.com/security/updates/classification/#important

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

Read the Full Advisory


Severity
important
Lowest
Low
Medium
High
Critical

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

Topic

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 impactof Important. A Common Vulnerability Scoring System (CVSS) base score,which gives a detailed severity rating, is available for each vulnerabilityfrom the CVE link(s) in the References section.

Topics%20covered

Topics Covered

security advisory Red Hat memory leak libtirpc rpcbind

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

Bugs Fixed

1448124 - CVE-2017-8779 rpcbind, libtirpc, libntirpc: Memory leak when failing to parse XDR strings or bytearrays

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