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AUSCERT Security Bulletin
ASB-2013.0072
A vulnerability has been identified on Nexus 7000 series switches
7 June 2013
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AusCERT Security Bulletin Summary
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Product: Cisco Nexus 7000 series switches
Operating System: Cisco
Impact/Access: Denial of Service -- Remote/Unauthenticated
Resolution: Patch/Upgrade
CVE Names: CVE-2012-3051
Member content until: Sunday, July 7 2013
OVERVIEW
A vulnerability has been identified in versions prior to
Cisco NX-OS 5.2.9 on the Nexus 7000 series switches.
IMPACT
The vendor has provided the following details regarding the
vulnerability:
"Symptoms:
–The Adjmgr process fails when an ARP packet is received.
–The adjacency manager can have a stale entry that cause packet drops.
Conditions:
This symptom might be seen when continuous ARP packets are received
for a long period of time from various hosts in the subnet destined
to a Cisco Nexus 7000 Series switch IP address." [1]
MITIGATION
The vendor recommends upgrading to 5.2.9 to mitigate this
vulnerability.
REFERENCES
[1] Cisco Nexus 7000 Series NX-OS Release Notes, Release 5.2
http://www.cisco.com/en/US/docs/switches/datacenter/sw/5_x/nx-os/release/notes/52_nx-os_release_note.html
AusCERT has made every effort to ensure that the information contained
in this document is accurate. However, the decision to use the information
described is the responsibility of each user or organisation. The decision to
follow or act on information or advice contained in this security bulletin is
the responsibility of each user or organisation, and should be considered in
accordance with your organisation's site policies and procedures. AusCERT
takes no responsibility for consequences which may arise from following or
acting on information or advice contained in this security bulletin.
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Australian Computer Emergency Response Team
The University of Queensland
Brisbane
Qld 4072
Internet Email: auscert@auscert.org.au
Facsimile: (07) 3365 7031
Telephone: (07) 3365 4417 (International: +61 7 3365 4417)
AusCERT personnel answer during Queensland business hours
which are GMT+10:00 (AEST).
On call after hours for member emergencies only.
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