A privilege escalation vulnerability in the Python scripting subsystem of Cisco Nexus 7000 devices that have been configured with multiple virtual device contexts (VDCs) could allow an authenticated, local attacker to delete files owned by a different VDC on the device. The vulnerability exists due to incomplete privilege separation of the Python scripting engine across multiple VDCs. An attacker with administrative privileges in a specific VDC could exploit this vulnerability to remove files owned by a separate VDC. This could result in a denial of service (DoS) condition on the affected device. Cisco has confirmed the vulnerability; however, software updates are not available. To exploit this vulnerability, an attacker must have local access and be able to authenticate to the targeted device. In addition, the attacker must have administrative privileges in a specific VDC on the device. These requirements could limit the possibility of a successful exploit. Cisco would like to thank Jens Krabbenhoeft for discovering and reporting this vulnerability.
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.
To learn about Cisco security vulnerability disclosure policies and publications, see the Security Vulnerability Policy. This document also contains instructions for obtaining fixed software and receiving security vulnerability information from Cisco.
Version | Description | Section | Status | Date |
1.0 | Initial Release | NA | Final | 2015-Jun-30 |
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 stand-alone 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.