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Category:   Application (Generic)  >   Rpcbind Vendors:   libtirpc.sourceforge.net
(Oracle Issues Fix for Oracle Linux) Rpcbind Memory Leak in rpcb_service_4() Lets Remote Users Consume Excessive Memory Resources
SecurityTracker Alert ID:  1038550
SecurityTracker URL:  http://securitytracker.com/id/1038550
CVE Reference:   CVE-2017-8779   (Links to External Site)
Date:  May 24 2017
Impact:   Denial of service via network
Fix Available:  Yes  Vendor Confirmed:  Yes  Exploit Included:  Yes  

Description:   A vulnerability was reported in Rpcbind. A remote user can consume excessive memory on the target system.

A remote user can send a large number of specially crafted XDR messages to trigger a memory leak in rpcb_service_4() to consume excessive memory on the target system.

The vulnerability resides in the libntirpc component.

The original advisory and demonstration exploit is available at:

https://guidovranken.wordpress.com/2017/05/03/rpcbomb-remote-rpcbind-denial-of-service-patches/

Guido Vranken reported this vulnerability.

Impact:   A remote user can consume excessive memory resources on the target system.
Solution:   Oracle has issued a fix.

The Oracle Linux advisory is available at:

http://linux.oracle.com/errata/ELSA-2017-1267.html

Vendor URL:  linux.oracle.com/errata/ELSA-2017-1267.html (Links to External Site)
Cause:   Resource error
Underlying OS:  Linux (Oracle)
Underlying OS Comments:  6

Message History:   This archive entry is a follow-up to the message listed below.
May 22 2017 Rpcbind Memory Leak in rpcb_service_4() Lets Remote Users Consume Excessive Memory Resources



 Source Message Contents

Subject:  [El-errata] ELSA-2017-1267 Important: Oracle Linux 6 rpcbind security update

Oracle Linux Security Advisory ELSA-2017-1267

http://linux.oracle.com/errata/ELSA-2017-1267.html

The following updated rpms for Oracle Linux 6 have been uploaded to the 
Unbreakable Linux Network:

i386:
rpcbind-0.2.0-13.el6_9.i686.rpm

x86_64:
rpcbind-0.2.0-13.el6_9.x86_64.rpm


SRPMS:
http://oss.oracle.com/ol6/SRPMS-updates/rpcbind-0.2.0-13.el6_9.src.rpm



Description of changes:

[0.2.0-13_9]
- Fix for CVE-2017-8779 (bz 1449461)


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