ESB-2018.0378 - [Cisco] Cisco UCS Central: Execute arbitrary code/commands - Existing account 2018-02-08

Printable version
PGP/GPG verifiable version

-----BEGIN PGP SIGNED MESSAGE-----
Hash: SHA256

===========================================================================
             AUSCERT External Security Bulletin Redistribution

                               ESB-2018.0378
        Cisco UCS Central Arbitrary Command Execution Vulnerability
                              8 February 2018

===========================================================================

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

Product:           Cisco UCS Central
Publisher:         Cisco Systems
Operating System:  Cisco
Impact/Access:     Execute Arbitrary Code/Commands -- Existing Account
                   Increased Privileges            -- Existing Account
Resolution:        Patch/Upgrade
CVE Names:         CVE-2018-0113  

Original Bulletin: 
   https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20180207-ucsc

- --------------------------BEGIN INCLUDED TEXT--------------------

Cisco UCS Central Arbitrary Command Execution Vulnerability

High

Advisory ID: cisco-sa-20180207-ucsc

First Published: 2018 February 7 16:00 GMT

Version 1.0: Final

Workarounds: No workarounds available

Cisco Bug IDs: CSCve70825

CVSS Score: Base 8.8

CVE-2018-0113

CWE-20


Summary

A vulnerability in an operations script of Cisco UCS Central could allow an
authenticated, remote attacker to execute arbitrary shell commands with the
privileges of the daemon user.

The vulnerability is due to insufficient input validation. An attacker could
exploit this vulnerability by posting a crafted request to the user interface of
Cisco UCS Central.

Cisco has released software updates that address this vulnerability. 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-20180207-ucsc


Affected Products

Vulnerable Products

This vulnerability affects Cisco UCS Central Software prior to Release 2.0(1c).

No other Cisco products are currently known to be affected by this
vulnerability.  Products Confirmed Not Vulnerable

Cisco has confirmed that Cisco UCS Manager is not vulnerable.


Details

To determine which release of the software is currently running on a device,
administrators may use the show version command in the device CLI. The output of
the command in the CLI is similar to the following example (which shows release
2.0(1a) installed):

    UCSC-Primary# show version

    Name                Package             Version        GUI
    ----                -------             -------        ----
    core                Base System         2.0(1a)        2.0(1a)
    policy-mgr          Policy Manager      2.0(1a)        2.0(1a)
    .
    .
    .

    The currently running release is also displayed on the login screen of the GUI.


Workarounds

There are no workarounds that address this vulnerability.


Fixed Software

Cisco has released free software updates that address the vulnerability
described in this advisory. Customers may only install and expect support for
software versions and feature sets for which they have purchased a license. By
installing, downloading, accessing, or otherwise using such software upgrades,
customers agree to follow the terms of the Cisco software license:
https://www.cisco.com/c/en/us/products/end-user-license-agreement.html

Additionally, customers may only download software for which they have a valid
license, procured from Cisco directly, or through a Cisco authorized reseller or
partner. In most cases this will be a maintenance upgrade to software that was
previously purchased. Free security software updates do not entitle customers to
a new software license, additional software feature sets, or major revision
upgrades.

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.

Customers Without Service Contracts

Customers who purchase directly from Cisco but do not hold a Cisco service
contract and customers who make purchases through third-party vendors but are
unsuccessful in obtaining fixed software through their point of sale should
obtain upgrades by contacting the Cisco TAC:
https://www.cisco.com/c/en/us/support/web/tsd-cisco-worldwide-contacts.html

Customers should have the product serial number available and be prepared to
provide the URL of this advisory as evidence of entitlement to a free upgrade.


Fixed Releases

Cisco UCS Central Release 2.0(1c) resolves this vulnerability.  Software is
available for download from Cisco Software Central from the following path:
Downloads Home > Products > Servers - Unified Computing > UCS Central Software >
UCS Central 2.x.


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.


URL

https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20180207-ucsc


Revision History

+---------+-------------------------+---------+--------+------------------+
| Version |       Description       | Section | Status |       Date       |
+---------+-------------------------+---------+--------+------------------+
| 1.0     | Initial public release. | -       | Final  | 2018-February-07 |
+---------+-------------------------+---------+--------+------------------+


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.

- --------------------------END INCLUDED TEXT--------------------

You have received this e-mail bulletin as a result of your organisation's
registration with AusCERT. The mailing list you are subscribed to is
maintained within your organisation, so if you do not wish to continue
receiving these bulletins you should contact your local IT manager. If
you do not know who that is, please send an email to auscert@auscert.org.au
and we will forward your request to the appropriate person.

NOTE: Third Party Rights
This security bulletin is provided as a service to AusCERT's members.  As
AusCERT did not write the document quoted above, AusCERT has had no control
over its content. The decision to follow or act on information or advice
contained in this security bulletin is the responsibility of each user or
organisation, and should be considered in accordance with your organisation's
site policies and procedures. AusCERT takes no responsibility for consequences
which may arise from following or acting on information or advice contained in
this security bulletin.

NOTE: This is only the original release of the security bulletin.  It may
not be updated when updates to the original are made.  If downloading at
a later date, it is recommended that the bulletin is retrieved directly
from the author's website to ensure that the information is still current.

Contact information for the authors of the original document is included
in the Security Bulletin above.  If you have any questions or need further
information, please contact them directly.

Previous advisories and external security bulletins can be retrieved from:

        https://www.auscert.org.au/bulletins/

===========================================================================
Australian Computer Emergency Response Team
The University of Queensland
Brisbane
Qld 4072

Internet Email: auscert@auscert.org.au
Facsimile:      (07) 3365 7031
Telephone:      (07) 3365 4417 (International: +61 7 3365 4417)
                AusCERT personnel answer during Queensland business hours
                which are GMT+10:00 (AEST).
                On call after hours for member emergencies only.
===========================================================================
-----BEGIN PGP SIGNATURE-----
Comment: http://www.auscert.org.au/render.html?it=1967
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=S5D5
-----END PGP SIGNATURE-----

« Back to bulletins