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AUSCERT External Security Bulletin Redistribution
ESB-2015.3056
Cisco Nexus 5000 Series USB Driver Denial of Service Vulnerability
8 December 2015
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AusCERT Security Bulletin Summary
---------------------------------
Product: Cisco Nexus 5000 Series Switches
Publisher: Cisco Systems
Operating System: Cisco
Impact/Access: Denial of Service -- Existing Account
Resolution: Patch/Upgrade
CVE Names: CVE-2015-6394
Original Bulletin:
http://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20151204-nexus
Comment: There are currently no workarounds or patches for this
vulnerability. However, as a general rule, AusCERT recommends
limiting physical access to network devices.
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Cisco Nexus 5000 Series USB Driver Denial of Service Vulnerability
Medium
Advisory ID:
cisco-sa-20151204-nexus
Published:
2015 December 4 08:00 GMT
Version 1.0:
Final
CVSS Score:
Base - 4.9
Workarounds:
No workarounds available
Cisco Bug IDs:
CSCus89408
CVE-2015-6394
CWE-399
Summary
A vulnerability in the USB driver for Cisco Nexus 5000 Series Switches could
allow an unauthenticated, local attacker to cause a denial of service (DoS)
condition due to a kernel crash.
The vulnerability is due to insufficient handling of USB input parameters. An
attacker could exploit this vulnerability by sending crafted USB parameters to
be processed by the kernel of an affected device. A successful exploit could
allow the attacker to cause a DoS condition on the affected device.
Cisco has not released software updates that address this vulnerability. There
are no workarounds that mitigate this vulnerability.
This advisory is available at the following link:
http://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20151204-nexus
Affected Products
Vulnerable Products
Cisco Nexus 5000 Series Switches running Cisco NX-OS Software Release
5.2(9)N1(1) are vulnerable.
Products Confirmed Not Vulnerable
No other Cisco products are currently known to be affected by this
vulnerability.
Workarounds
There are no workarounds that mitigate this vulnerability.
Fixed Software
When considering software upgrades, customers are advised to consult the Cisco
Security Advisories and Responses archive at http://www.cisco.com/go/psirt and
review subsequent advisories to determine exposure and a complete upgrade
solution.
In all cases, customers should ensure that the devices to upgrade contain
sufficient memory and confirm that current hardware and software
configurations will continue to be supported properly by the new release. If
the information is not clear, customers are advised to contact the Cisco
Technical Assistance Center (TAC) or their contracted maintenance providers.
Exploitation and Public Announcements
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.
URL
http://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20151204-nexus
Revision History
Version Description Section Status Date
1.0 Initial public release. Final 2015-December-04
Legal Disclaimer
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 standalone 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.
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