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AUSCERT External Security Bulletin Redistribution
Cisco UCS Central Software Command-Line Interface Command
16 June 2015
AusCERT Security Bulletin Summary
Product: Cisco Unified Computing System Central Software
Publisher: Cisco Systems
Operating System: VMware ESX Server
Impact/Access: Execute Arbitrary Code/Commands -- Existing Account
Increased Privileges -- Existing Account
CVE Names: CVE-2015-4183
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Vulnerability Alert Cisco UCS Central Software Command-Line Interface Command
Threat Type: CWE-78: OS Command Injections
IntelliShield ID: 39324
First Published: 2015 June 15 18:57 GMT
Last Published: 2015 June 15 18:57 GMT
Port: Not available
Urgency: Unlikely Use
Severity: Mild Damage
CVSS Base: 6.8
CVSS Version 2.0
CVSS Temporal: 5.6
Version Summary: Cisco UCS Central Software contains a vulnerability that
could allow an authenticated, local attacker to inject and execute arbitrary
commands on the underlying operating system. Updates are available.
A vulnerability in the command-line interface (CLI) of Cisco UCS Central
Software could allow an authenticated, local attacker to inject arbitrary
commands that are executed with elevated privileges on the underlying
The vulnerability is due to insufficient input validation. An attacker could
exploit this vulnerability by authenticating to the device and submitting
crafted commands to the affected parameter in the CLI. An exploit could allow
the attacker to read, write, and overwrite any file on the system or execute
Cisco has confirmed the vulnerability and released software updates.
At the time this alert was first published, Cisco UCS Central Software version
1.2(1a) was vulnerable. Later versions of Cisco UCS Central Software may also
To exploit this vulnerability, an attacker must authenticate and have local
access to an affected device. These requirements may reduce the likelihood of
a successful exploit.
Cisco indicates through the CVSS score that functional exploit code exists;
however, the code is not known to be publicly available.
Cisco has released bug ID CSCut32795 for registered users, which contains
additional details and an up-to-date list of affected product versions.
An authenticated, local attacker could exploit this vulnerability to inject
and execute arbitrary commands with elevated privileges on the underlying
operating system. A successful exploit could result in a complete system
The vulnerability is due to insufficient validation of user-supplied input
processed by an affected device.
An attacker could exploit this vulnerability by authenticating to the device
and submitting crafted commands to the affected parameter in the CLI. An
exploit could allow the attacker to read, write, and overwrite any file on the
system or execute arbitrary code. A successful exploit could result in a
complete system compromise.
Administrators are advised to apply the appropriate updates.
Administrators are advised to allow only trusted users to access local
Administrators are advised to allow only privileged users to access
administration or management systems.
Administrators are advised to monitor affected systems.
Cisco customers with active contracts can obtain updates through the Software
Center at the following link: Cisco. Cisco customers without contracts can
obtain upgrades by contacting the Cisco Technical Assistance Center at
1-800-553-2447 or 1-408-526-7209 or via email at email@example.com.
The security vulnerability applies to the following combinations of products.
Cisco Cisco Unified Computing System Central Software 1.2 (1a)
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The urgency and severity ratings of this alert are not tailored to individual
users; users may value alerts differently based upon their network
configurations and circumstances. THE ALERT, AND INFORMATION CONTAINED
THEREIN, ARE PROVIDED ON AN "AS IS" BASIS AND DO NOT IMPLY ANY KIND OF
GUARANTEE OR WARRANTY, INCLUDING THE WARRANTIES OF MERCHANTABILITY OR FITNESS
FOR A PARTICULAR USE. YOUR USE OF THE ALERT, AND INFORMATION CONTAINED
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IN THIS ALERT AND ANY RELATED COMMUNICATIONS IS BASED ON OUR KNOWLEDGE AT THE
TIME OF PUBLICATION AND IS SUBJECT TO CHANGE WITHOUT NOTICE. CISCO RESERVES
THE RIGHT TO CHANGE OR UPDATE ALERTS AT ANY TIME.
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