Cisco Security Advisory
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AV:N/AC:L/Au:S/C:N/I:N/A:P/E:F/RL:U/RC:C
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A vulnerability in the Simple Network Management Protocol (SNMP) interface of the Nexus 3000 (N3K) Series Switch could allow an authenticated, remote attacker to cause a partial denial of service (DoS) condition to the SNMP service running on the device.
The vulnerability is due to improper handling of an SNMP request with a non-existent Object Identifier (OID). An attacker could exploit this vulnerability by sending a crafted SNMP request to the affected device. An exploit could allow the attacker to cause a partial DoS condition of the SNMP interface where SNMP requests with legitimately formatted OIDs will time out. The DoS condition does clear and SNMP requests will start to be processed normally as expected.
Cisco has confirmed the vulnerability; however, software updates are not available.
To exploit this vulnerability, an attacker must authenticate to the targeted device. This access requirement reduces 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.
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Cisco has released bug ID CSCuw36684 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 N3K Series Switches running Cisco NX-OS Software release 6.0(2)U6(0.46) were vulnerable. Later releases of Cisco NX-OS Software running on Cisco N3K Series Switches 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 have network access.
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-Sep-30
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