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-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 =========================================================================== AUSCERT External Security Bulletin Redistribution ESB-2015.1571 Cisco UCS Central Software Command-Line Interface Command Injection Vulnerability 16 June 2015 =========================================================================== AusCERT Security Bulletin Summary --------------------------------- Product: Cisco Unified Computing System Central Software Publisher: Cisco Systems Operating System: VMware ESX Server KVM Microsoft Hyper-V Impact/Access: Execute Arbitrary Code/Commands -- Existing Account Increased Privileges -- Existing Account Resolution: Patch/Upgrade CVE Names: CVE-2015-4183 Original Bulletin: http://tools.cisco.com/security/center/viewAlert.x?alertId=39324 - --------------------------BEGIN INCLUDED TEXT-------------------- Vulnerability Alert Cisco UCS Central Software Command-Line Interface Command Injection Vulnerability Threat Type: CWE-78: OS Command Injections IntelliShield ID: 39324 Version: 1 First Published: 2015 June 15 18:57 GMT Last Published: 2015 June 15 18:57 GMT Port: Not available CVE: CVE-2015-4183 Urgency: Unlikely Use Credibility: Confirmed 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. Description 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 operating system. 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 arbitrary code. Cisco has confirmed the vulnerability and released software updates. Warning Indicators 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 be vulnerable. IntelliShield Analysis 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. Vendor Announcements Cisco has released bug ID CSCut32795 for registered users, which contains additional details and an up-to-date list of affected product versions. Impact 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 compromise. Technical Information 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. Safeguards Administrators are advised to apply the appropriate updates. Administrators are advised to allow only trusted users to access local systems. Administrators are advised to allow only privileged users to access administration or management systems. Administrators are advised to monitor affected systems. Patches/Software 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 tac@cisco.com. Alert History Initial Release Product Sets The security vulnerability applies to the following combinations of products. Primary Products: Cisco Cisco Unified Computing System Central Software 1.2 (1a) Associated Products: N/A Alerts and bulletins on the Cisco Security Intelligence Operations Portal are highlighted by analysts in the Cisco Threat Operations Center and represent a subset of the comprehensive content that is available through Cisco Security IntelliShield Alert Manager Service. This customizable threat and vulnerability alert service provides security staff with access to timely, accurate, and credible information about threats and vulnerabilities that may affect their environment. LEGAL DISCLAIMER 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. 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Previous advisories and external security bulletins can be retrieved from: http://www.auscert.org.au/render.html?cid=1980 =========================================================================== 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). 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