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Category:   Device (Firewall)  >   Palo Alto PAN-OS Vendors:   Palo Alto Networks
(Palo Alto Networks Issues Fix for Palo Alto PAN-OS) Linux Kernel Copy-on-Write Memory Management Race Condition Lets Local Users Obtain Elevated Privileges
SecurityTracker Alert ID:  1037888
SecurityTracker URL:  http://securitytracker.com/id/1037888
CVE Reference:   CVE-2016-5195   (Links to External Site)
Date:  Feb 23 2017
Impact:   Execution of arbitrary code via local system, Root access via local system
Fix Available:  Yes  Vendor Confirmed:  Yes  
Version(s): 5.1, 6.0, 6.1, 7.0, 7.1.7 and prior
Description:   A vulnerability was reported in the Linux kernel. A local user can obtain root privileges on the target system. Palo Alto PAN-OS is affected.

A local user can a race condition in the kernel memory subsystem in the management of copy-on-write operations on read-only memory mappings to overwrite kernel memory and gain kernel-level privileges.

This vulnerability is being actively exploited.

Some demonstration exploit code is listed at:

https://github.com/dirtycow/dirtycow.github.io/wiki/PoCs

Impact:   A local user can obtain root privileges on the target system.
Solution:   Palo Alto Networks has issued a fix (7.1.8).

The Palo Alto Networks advisory is available at:

https://securityadvisories.paloaltonetworks.com/Home/Detail/73

Vendor URL:  securityadvisories.paloaltonetworks.com/Home/Detail/73 (Links to External Site)
Cause:   Access control error, State error

Message History:   This archive entry is a follow-up to the message listed below.
Oct 22 2016 Linux Kernel Copy-on-Write Memory Management Race Condition Lets Local Users Obtain Elevated Privileges



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