Cisco Security AdvisoryHigh
Advisory ID:
cisco-sa-20160601-prime3
First Published:
2016 June 1 16:00 GMT
Version 1.0:
Workarounds:
No workarounds available
Cisco Bug IDs:
CVSS Score:
Base 5.0,
Temporal 4.1
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AV:N/AC:L/Au:N/C:N/I:N/A:P/E:F/RL:OF/RC:C
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AV:N/AC:L/Au:N/C:N/I:N/A:P/E:F/RL:OF/RC:C
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A vulnerability in the IPv6 packet decode function of the Cisco Network Analysis Module (NAM) could allow an unauthenticated, remote attacker to cause a denial of service (DoS) condition.
The vulnerability is due to an improper calculation of the IPv6 payload length of certain IPv6 packets. An attacker could exploit this vulnerability by sending crafted IPv6 packets on the network where the NAM is collecting and monitoring traffic. An exploit could allow the attacker to cause a DoS condition and the NAM could cease to collect and monitor traffic for a short time.
Cisco has released software updates that address this vulnerability. There are no workarounds that address this vulnerability.
This advisory is available at the following link:
http://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20160601-prime3
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Exploitation of this vulnerability could cause gaps in traffic monitoring along with a crash of the mond process. The crash of the mond process can be indicated by the following error logs:
mond is not responding
RD_WD: mond () is dead!
To view the core file and associated system log files, administrators can use the following commands:
- Log in to Cisco NAM GUI
- Navigate to Administration > Diagnostics > Tech Support
- At the top of the page, find the Download log files link
- Click the link and download the zip file
- To download core files from the Tech Support page, scroll down to the Core Files section and click on the filename
Contact the Cisco Technical Assistance Center (TAC) to review the core file and system log files to determine whether the device has been compromised by exploitation of this vulnerability.
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There are no workarounds that address this vulnerability.
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Cisco has released free software updates that address the vulnerability described in this advisory. Customers may only install and expect support for software versions and feature sets for which they have purchased a license. By installing, downloading, accessing, or otherwise using such software upgrades, customers agree to follow the terms of the Cisco software license: http://www.cisco.com/en/US/docs/general/warranty/English/EU1KEN_.html.
Additionally, customers may only download software for which they have a valid license, procured from Cisco directly, or through a Cisco authorized reseller or partner. In most cases this will be a maintenance upgrade to software that was previously purchased. Free security software updates do not entitle customers to a new software license, additional software feature sets, or major revision upgrades.
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.
Customers Without Service Contracts
Customers who purchase directly from Cisco but do not hold a Cisco service contract and customers who make purchases through third-party vendors but are unsuccessful in obtaining fixed software through their point of sale should obtain upgrades by contacting the Cisco Technical Assistance Center (TAC): http://www.cisco.com/en/US/support/tsd_cisco_worldwide_contacts.html.
Customers should have the product serial number available and be prepared to provide the URL of this advisory as evidence of entitlement to a free upgrade.
Fixed Releases
Customers should upgrade to an appropriate release as indicated in this section. To help ensure a complete upgrade solution, consider that this advisory is part of a collection that includes the following advisories:
cisco-sa-20160525-prime: Cisco Prime Network Analysis Module Unauthenticated Remote Code Execution Vulnerability
cisco-sa-20160525-prime3: Cisco Prime Network Analysis Module IPv6 Denial of Service Vulnerability
This vulnerability is fixed in software version 6.2(1-b) or later, which can be downloaded from:
Products > Cloud and Systems Management > Network Analysis Module (NAM) Products
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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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This vulnerability was found during internal quality assurance security testing.
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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 public release. — Final 2016-June-01
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