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Category:   Device (Router/Bridge/Hub)  >   Cisco IOS Vendors:   Cisco
Cisco IOS/IOS XE Input Validation Bug in Diagnostic Shell Lets Local Users Overwrite System Files on the Target System
SecurityTracker Alert ID:  1040346
SecurityTracker URL:
CVE Reference:   CVE-2018-0123   (Links to External Site)
Date:  Feb 7 2018
Impact:   Modification of system information, Modification of user information
Fix Available:  Yes  Vendor Confirmed:  Yes  

Description:   A vulnerability was reported in Cisco IOS/IOS XE. A local user can overwrite system files on the target system.

A local user on the diagnostic shell can supply specially crafted diagnostic shell commands to exploit an input validation flaw and overwrite ostensibly restricted system files.

The vendor has assigned bug ID CSCvg41950 to this vulnerability.

Impact:   A local user can overwrite system files on the target system.
Solution:   The vendor has issued a fix (16.8(0.99)).

The vendor advisory is available at:

Vendor URL: (Links to External Site)
Cause:   Input validation error

Message History:   None.

 Source Message Contents



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