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Category:   Device (Router/Bridge/Hub)  >   Cisco IOS Vendors:   Cisco
Cisco IOS XE on IOS XE 3S Flaw Lets Local Users Bypass License Restrictions
SecurityTracker Alert ID:  1034296
SecurityTracker URL:  http://securitytracker.com/id/1034296
CVE Reference:   CVE-2015-6383   (Links to External Site)
Date:  Dec 5 2015
Impact:   Root access via local system
Fix Available:  Yes  Vendor Confirmed:  Yes  
Version(s): IOS XE 3S
Description:   A vulnerability was reported in Cisco IOS XE on IOS XE 3S. A local user can bypass license restrictions.

A local user can on the the command-line interface can supply specially crafted diagnostic commands parameters to bypass license restrictions and gain root shell access without the proper license.

The vendor has assigned bug ID CSCuv93130 to this vulnerability.

[Editor's note: The vendor previously released an advisory for Cisco ASR 1000 Series Routers describing a similar vulnerability and assigning the same Cisco Bug ID number and CVE number (see Alert ID 1034277). As of December 5, 2015, the previous advisory was no longer available on the vendor's web site.]

Impact:   A local user can bypass license restrictions on the target system.
Solution:   The vendor has issued a fix.

The vendor's advisory is available at:

http://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20151130-iosxe3s

Vendor URL:  tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20151130-iosxe3s (Links to External Site)
Cause:   Input validation error

Message History:   None.


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