ESB-2017.2394 - [Virtual] Cisco UCS Central Software: Unauthorised access - Existing account 2017-09-21

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             AUSCERT External Security Bulletin Redistribution

                               ESB-2017.2394
       Cisco UCS Central Software Command Line Interface Restricted
                         Shell Break Vulnerability
                             21 September 2017

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

Product:           Cisco UCS Central Software
Publisher:         Cisco Systems
Operating System:  Virtualisation
Impact/Access:     Unauthorised Access -- Existing Account
Resolution:        Patch/Upgrade
CVE Names:         CVE-2017-12255  

Original Bulletin: 
   https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20170920-ucs

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Cisco Security Advisory

Cisco UCS Central Software Command Line Interface Restricted Shell Break 
Vulnerability

Medium

Advisory ID: cisco-sa-20170920-ucs

First Published: 2017 September 20 16:00 GMT

Version 1.0: Final

Workarounds: No workarounds available

Cisco Bug IDs:

CSCve70762

CVSS Score:

Base 6.7

Base 6.7 CVSS:3.0/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H/E:X/RL:X/RC:X

CVE-2017-12255

CWE-20

Summary

A vulnerability in the CLI of Cisco UCS Central Software could allow an 
authenticated, local attacker to gain shell access.

The vulnerability is due to insufficient input validation of commands entered
in the CLI. An attacker could exploit this vulnerability by entering a 
specific command with crafted arguments. An exploit could allow the attacker 
to gain shell access to the underlying system.

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-20170920-ucs

Affected Products

Vulnerable Products

This vulnerability affects Cisco UCS Central 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 during internal testing.

URL

https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20170920-ucs

Revision History

Version Description		Section	Status	Date

1.0	Initial public release.	--	Final	2017-September-20

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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