Overly broad permissions can turn one compromised account into a much larger security problem. Learn how to reduce unnecessary access, review privileges, and apply least privilege across modern Linux systems. Review Linux Privileges×

Alerts This Week
Warning Icon 1 544
Alerts This Week
Warning Icon 1 544

Red Hat 6 RHSA-2017-1267-01 Important: Rpcbind Memory Leak

red hat
Calendar Grey May 23, 2017
Scroller Redhat
A significant security patch for rpcbind in Red Hat 6 tackles a severe memory leak that poses risks to system integrity.
An update for rpcbind is now available for Red Hat Enterprise Linux 6

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 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)

Topics%20covered

Topics Covered

security advisory Red Hat memory leak important update rpcbind rpc service

References

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

Package List

Red Hat Enterprise Linux Desktop (v. 6):
Source: rpcbind-0.2.0-13.el6_9.src.rpm
i386: rpcbind-0.2.0-13.el6_9.i686.rpm rpcbind-debuginfo-0.2.0-13.el6_9.i686.rpm
x86_64: rpcbind-0.2.0-13.el6_9.x86_64.rpm rpcbind-debuginfo-0.2.0-13.el6_9.x86_64.rpm
Red Hat Enterprise Linux HPC Node (v. 6):
Source: rpcbind-0.2.0-13.el6_9.src.rpm
x86_64: rpcbind-0.2.0-13.el6_9.x86_64.rpm rpcbind-debuginfo-0.2.0-13.el6_9.x86_64.rpm
Red Hat Enterprise Linux Server (v. 6):
Source: rpcbind-0.2.0-13.el6_9.src.rpm
i386: rpcbind-0.2.0-13.el6_9.i686.rpm rpcbind-debuginfo-0.2.0-13.el6_9.i686.rpm
ppc64: rpcbind-0.2.0-13.el6_9.ppc64.rpm rpcbind-debuginfo-0.2.0-13.el6_9.ppc64.rpm
s390x: rpcbind-0.2.0-13.el6_9.s390x.rpm rpcbind-debuginfo-0.2.0-13.el6_9.s390x.rpm
x86_64: rpcbind-0.2.0-13.el6_9.x86_64.rpm rpcbind-debuginfo-0.2.0-13.el6_9.x86_64.rpm
Red Hat Enterprise Linux Workstation (v. 6):
Source: rpcbind-0.2.0-13.el6_9.src.rpm
i386: rpcbind-0.2.0-13.el6_9.i686.rpm rpcbind-debuginfo-0.2.0-13.el6_9.i686.rpm
x86_64: rpcbind-0.2.0-13.el6_9.x86_64.rpm rpcbind-debuginfo-0.2.0-13.el6_9.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


Severity
important
Lowest
Low
Medium
High
Critical

Advisory ID: RHSA-2017:1267-01
Product: Red Hat Enterprise Linux
Advisory URL: https://access.redhat.com/errata/RHSA-2017:1267
Issue date: 2017-05-23

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 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 important update rpcbind rpc service

Relevant Releases Architectures

Red Hat Enterprise Linux Desktop (v. 6) - i386, x86_64

Red Hat Enterprise Linux HPC Node (v. 6) - x86_64

Red Hat Enterprise Linux Server (v. 6) - i386, ppc64, s390x, x86_64

Red Hat Enterprise Linux Workstation (v. 6) - i386, x86_64

Bugs Fixed

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

Get the latest News and Insights

Get the latest Linux and open source security news straight to your inbox.