Cisco Security Advisory
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AV:L/AC:L/Au:S/C:N/I:C/A:N/E:F/RL:U/RC:C
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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.
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Cisco has released bug ID CSCur08416 for registered users, which contains additional details and an up-to-date list of affected product versions.
Vulnerable Products
At the time this alert was first published, Cisco Nexus 7000 devices running Cisco NX-OS Software release 6.2(8a) were vulnerable. Later releases of Cisco NX-OS Software may also be vulnerable.Products Confirmed Not Vulnerable
No other Cisco products are currently known to be affected by these vulnerabilities.
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Administrators are advised to contact the vendor regarding future updates and releases.
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.
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Software updates are not available.
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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.
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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.
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Show LessVersion Description Section Status Date 1.0 Initial Release NA Final 2015-Jun-30
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