ESB-2017.2241 - [Cisco] Cisco IR800 Integrated Services Router: Execute arbitrary code/commands - Console/physical 2017-09-07

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             AUSCERT External Security Bulletin Redistribution

                               ESB-2017.2241
         Cisco IR800 Integrated Services Router ROM Monitor Input
                         Validation Vulnerability
                             7 September 2017

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        AusCERT Security Bulletin Summary
        ---------------------------------

Product:           Cisco IR800 Integrated Services Router
Publisher:         Cisco Systems
Operating System:  Cisco
Impact/Access:     Execute Arbitrary Code/Commands -- Console/Physical
Resolution:        Patch/Upgrade
CVE Names:         CVE-2017-12223  

Original Bulletin: 
   https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20170906-isr

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Cisco IR800 Integrated Services Router ROM Monitor Input Validation
Vulnerability

Medium

Advisory ID: cisco-sa-20170906-isr

First Published: 2017 September 6 16:00 GMT

Version 1.0: Final

Workarounds: No workarounds available

Cisco Bug IDs:

CSCvb44027

CVSS Score:

Base 6.4

Base 6.4 CVSS:3.0/AV:P/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H/E:X/RL:X/RC:X

CVE-2017-12223

CWE-20

Summary

A vulnerability in the ROM Monitor (ROMMON) code of Cisco IR800 Integrated
Services Router Software could allow an unauthenticated, local attacker to
boot an unsigned Hypervisor on an affected device and compromise the
integrity
of the system.

The vulnerability is due to insufficient sanitization of user input. An
attacker who can access an affected router via the console could exploit this
vulnerability by entering ROMMON mode and modifying ROMMON variables. A
successful exploit could allow the attacker to execute arbitrary code and
install a malicious version of Hypervisor firmware on an affected device.

There are no workarounds that address this vulnerability.

This advisory is available at the following link:

https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20170906-isr

Affected Products

Vulnerable Products

This vulnerability affects Cisco IR800 Integrated Services Router Software.
For information about affected software releases, consult the Cisco bug ID(s)
at the top of this advisory.

Products Confirmed Not Vulnerable

No other Cisco products are currently known to be affected by this
vulnerability.

Workarounds

There are no workarounds that address this vulnerability.

Fixed Software

For information about fixed software releases, consult the Cisco bug ID(s) at
the top of this advisory.

When considering software upgrades, customers are advised to regularly
consult
the advisories for Cisco products, which are available from the Cisco
Security
Advisories and Alerts page, to determine exposure and a complete upgrade
solution.

In all cases, customers should ensure that the devices to be upgraded contain
sufficient memory and confirm that current hardware and software
configurations will continue to be supported properly by the new release. If
the information is not clear, customers are advised to contact the Cisco
Technical Assistance Center (TAC) or their contracted maintenance providers.

Exploitation and Public Announcements

The Cisco Product Security Incident Response Team (PSIRT) is not aware of any
public announcements or malicious use of the vulnerability that is described
in this advisory.

Source

This vulnerability was found internally.

URL

https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20170906-isr

Revision History

Version		Description		Section Status	Date

1.0		Initial public release. --	Final	2017-September-06

LEGAL DISCLAIMER

THIS DOCUMENT IS PROVIDED ON AN "AS IS" BASIS AND DOES NOT IMPLY ANY KIND OF
GUARANTEE OR WARRANTY, INCLUDING THE WARRANTIES OF MERCHANTABILITY OR FITNESS
FOR A PARTICULAR USE. YOUR USE OF THE INFORMATION ON THE DOCUMENT OR
MATERIALS
LINKED FROM THE DOCUMENT IS AT YOUR OWN RISK. CISCO RESERVES THE RIGHT TO
CHANGE OR UPDATE THIS DOCUMENT AT ANY TIME.

A standalone copy or paraphrase of the text of this document that omits the
distribution URL is an uncontrolled copy and may lack important information
or
contain factual errors. The information in this document is intended for end
users of Cisco products.

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