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Category:   OS (Linux)  >   Linux Kernel Vendors:   kernel.org
(Ubuntu Issues Fix) Linux Kernel Kerberos RxRPC Ticket Decoding Bug Lets Local Users Gain Elevated Privileges
SecurityTracker Alert ID:  1039078
SecurityTracker URL:  http://securitytracker.com/id/1039078
CVE Reference:   CVE-2017-7482   (Links to External Site)
Date:  Aug 4 2017
Impact:   Execution of arbitrary code via local system, User access via local system
Fix Available:  Yes  Vendor Confirmed:  Yes  
Version(s): Ubuntu 17.04
Description:   A vulnerability was reported in the Linux kernel. A local user can obtain elevated privileges on the target system.

A local user can create a specially crafted Kerberos 5 ticket that, when decoded by the target system to be loaded into a RxRPC key, will trigger a buffer overflow and potentially execute arbitrary code on the target system with elevated privileges.

Shi Lei, Qihoo 360 Inc., reported this vulnerability.

Impact:   A local user can obtain elevated privileges on the target system.
Solution:   Ubuntu has issued a fix.

The Ubuntu advisory is available at:

tps://www.ubuntu.com/usn/usn-3377-1

Vendor URL:  www.ubuntu.com/usn/usn-3377-1 (Links to External Site)
Cause:   Boundary error

Message History:   This archive entry is a follow-up to the message listed below.
Jun 26 2017 Linux Kernel Kerberos RxRPC Ticket Decoding Bug Lets Local Users Gain Elevated Privileges



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