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Category:   OS (Linux)  >   Linux Kernel Vendors:   kernel.org
Linux Kernel NFS Server-Side XDR Buffer Overflow May Let Remote Users Execute Arbitrary Code
SecurityTracker Alert ID:  1024286
SecurityTracker URL:  http://securitytracker.com/id/1024286
CVE Reference:   CVE-2010-2521   (Links to External Site)
Date:  Aug 6 2010
Impact:   Execution of arbitrary code via network, User access via network
Fix Available:  Yes  Vendor Confirmed:  Yes  
Version(s): 2.5.49 to prior to 2.6.34-rc6
Description:   A vulnerability was reported in the Linux Kernel. A remote user on the local network may be able to execute arbitrary code on the target system.

A remote user on the local network can send a specially crafted large compound request to the target NFSv4 server to trigger a buffer overflow and potentially execute arbitrary code on the target system. The code will run with the privileges of the target service.

Impact:   A remote user on the local network may be able to execute arbitrary code on the target system.
Solution:   The vendor has issued a fix (2.6.34-rc6).

The source code fix is available at:

http://git.kernel.org/linus/2bc3c1179c781b359d4f2f3439cb3df72afc17fc

Vendor URL:  www.kernel.org/ (Links to External Site)
Cause:   Boundary error
Underlying OS:  

Message History:   This archive entry has one or more follow-up message(s) listed below.
Aug 6 2010 (Red Hat Issues Fix) Linux Kernel NFS Server-Side XDR Buffer Overflow May Let Remote Users Execute Arbitrary Code   (bugzilla@redhat.com)
Red Hat has issued a fix for Red Hat Enterprise Linux 4.
Aug 10 2010 (Red Hat Issues Fix) Linux Kernel NFS Server-Side XDR Buffer Overflow May Let Remote Users Execute Arbitrary Code   (bugzilla@redhat.com)
Red Hat has issued a fix for Red Hat Enterprise Linux 5.
Aug 17 2010 (Red Hat Issues Fix) Linux Kernel NFS Server-Side XDR Buffer Overflow May Let Remote Users Execute Arbitrary Code   (bugzilla@redhat.com)
Red Hat has issued a fix for Red Hat Enterprise MRG 1.2.
Nov 16 2010 (Red Hat Issues Fix) Linux Kernel NFS Server-Side XDR Buffer Overflow May Let Remote Users Execute Arbitrary Code   (bugzilla@redhat.com)
Red Hat has issued a fix for Red Hat Enterprise Linux 5.3 Extended Update Support.
Nov 23 2010 (Red Hat Issues Fix) Linux Kernel NFS Server-Side XDR Buffer Overflow May Let Remote Users Execute Arbitrary Code   (bugzilla@redhat.com)
Red Hat has issued a fix for Red Hat Enterprise Linux 5.4 Extended Update Support.



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