CVE-2015-6393: High severity cisco nx-os vulnerability

Published Oct 6, 2016
·
Updated

Cisco NX-OS 4.1 through 7.3 and 11.0 through 11.2 on Nexus 2000, 3000, 3500, 5000, 5500, 5600, 6000, 7000, 7700, and 9000 devices allows remote attackers to cause a denial of service (device crash) via malformed IPv4 DHCP packets to the DHCPv4 relay agent, aka Bug IDs CSCuq39250, CSCus21733, CSCus21739, CSCut76171, and CSCux67182.

Affected Software

133 affected components
Cisco NX-OS=4.2\(1\)n1\(1\)
Cisco NX-OS=4.2\(1\)n2\(1\)
Cisco NX-OS=4.2\(1\)n2\(1a\)
Cisco NX-OS=5.0\(2\)n1\(1\)
Cisco NX-OS=5.0\(2\)n2\(1\)
Cisco NX-OS=5.0\(2\)n2\(1a\)
Cisco NX-OS=5.0\(3\)n1\(1c\)
Cisco NX-OS=5.0\(3\)n2\(1\)
Cisco NX-OS=5.0\(3\)n2\(2\)
Cisco NX-OS=5.0\(3\)n2\(2a\)
Cisco NX-OS=5.0\(3\)n2\(2b\)
Cisco NX-OS=5.1\(3\)n1\(1\)
Cisco NX-OS=5.1\(3\)n1\(1a\)
Cisco NX-OS=5.1\(3\)n2\(1\)
Cisco NX-OS=5.1\(3\)n2\(1a\)
Cisco NX-OS=5.1\(3\)n2\(1b\)
Cisco NX-OS=5.1\(3\)n2\(1c\)
Cisco NX-OS=5.2\(1\)n1\(1\)
Cisco NX-OS=5.2\(1\)n1\(1a\)
Cisco NX-OS=5.2\(1\)n1\(1b\)
Cisco NX-OS=5.2\(1\)n1\(2\)
Cisco NX-OS=5.2\(1\)n1\(2a\)
Cisco NX-OS=5.2\(1\)n1\(3\)
Cisco NX-OS=5.2\(1\)n1\(4\)
Cisco NX-OS=5.2\(1\)n1\(5\)
Cisco NX-OS=5.2\(1\)n1\(6\)
Cisco NX-OS=5.2\(1\)n1\(7\)
Cisco NX-OS=5.2\(1\)n1\(8\)
Cisco NX-OS=5.2\(1\)n1\(8a\)
Cisco NX-OS=6.0\(2\)n1\(2a\)
Cisco Nexus 5010
Cisco Nexus 5020
Cisco Nexus 5548p
Cisco Nexus 5548up
Cisco Nexus 5596t
Cisco Nexus 5596up
Cisco Nexus 56128p
Cisco Nexus 5624q
Cisco Nexus 5648q
Cisco Nexus 5672up
Cisco Nexus 5672up-16g
Cisco Nexus 5696q
Cisco NX-OS=6.0\(2\)n1\(2\)
Cisco NX-OS=6.0\(2\)n2\(1\)
Cisco NX-OS=6.0\(2\)n2\(1b\)
Cisco NX-OS=6.0\(2\)n2\(2\)
Cisco NX-OS=6.0\(2\)n2\(3\)
Cisco NX-OS=6.0\(2\)n2\(4\)
Cisco NX-OS=6.0\(2\)n2\(5\)
Cisco NX-OS=6.0\(2\)n2\(5a\)
Cisco NX-OS=6.0\(2\)n2\(6\)
Cisco NX-OS=7.0\(0\)n1\(1\)
Cisco NX-OS=7.0\(1\)n1\(1\)
Cisco NX-OS=7.0\(2\)n1\(1\)
Cisco NX-OS=7.0\(3\)n1\(1\)
Cisco NX-OS=7.0\(4\)n1\(1\)
Cisco NX-OS=7.0\(5\)n1\(1\)
Cisco NX-OS=7.0\(5\)n1\(1a\)
Cisco NX-OS=7.1\(0\)n1\(1a\)
Cisco NX-OS=7.1\(0\)n1\(1b\)
Cisco Nexus 6001
Cisco Nexus 6004
Cisco NX-OS=6.1\(2\)i2\(1\)
Cisco NX-OS=6.1\(2\)i2\(2\)
Cisco NX-OS=6.1\(2\)i2\(2a\)
Cisco NX-OS=6.1\(2\)i2\(2b\)
Cisco NX-OS=6.1\(2\)i2\(3\)
Cisco NX-OS=6.1\(2\)i3\(1\)
Cisco NX-OS=6.1\(2\)i3\(2\)
Cisco NX-OS=6.1\(2\)i3\(3\)
Cisco NX-OS=6.1\(2\)i3\(3.78\)
Cisco NX-OS=6.1\(2\)i3\(4\)
Cisco NX-OS=7.0\(3\)
Cisco Nexus 93128
Cisco Nexus 9396px
Cisco Nexus 9396tx
Cisco Nexus 9504
Cisco Nexus 9508
Cisco Nexus 9516
Cisco Nexus N9336pqx
Cisco NX-OS=4.1.\(2\)
Cisco NX-OS=4.1.\(3\)
Cisco NX-OS=4.1.\(4\)
Cisco NX-OS=4.1.\(5\)
Cisco NX-OS=4.2\(3\)
Cisco NX-OS=4.2\(4\)
Cisco NX-OS=4.2\(6\)
Cisco NX-OS=4.2\(8\)
Cisco NX-OS=4.2.\(2a\)
Cisco NX-OS=5.0\(2a\)
Cisco NX-OS=5.0\(3\)
Cisco NX-OS=5.0\(5\)
Cisco NX-OS=5.1\(1\)
Cisco NX-OS=5.1\(1a\)
Cisco NX-OS=5.1\(3\)
Cisco NX-OS=5.1\(4\)
Cisco NX-OS=5.1\(5\)
Cisco NX-OS=5.1\(6\)
Cisco NX-OS=5.2\(1\)
Cisco NX-OS=5.2\(3a\)
Cisco NX-OS=5.2\(4\)
Cisco NX-OS=5.2\(5\)
Cisco NX-OS=5.2\(7\)
Cisco NX-OS=5.2\(9\)
Cisco NX-OS=6.0\(1\)
Cisco NX-OS=6.0\(2\)
Cisco NX-OS=6.0\(3\)
Cisco NX-OS=6.0\(4\)
Cisco NX-OS=6.1\(1\)
Cisco NX-OS=6.1\(2\)
Cisco NX-OS=6.1\(3\)
Cisco NX-OS=6.1\(4\)
Cisco NX-OS=6.1\(4a\)
Cisco NX-OS=6.1\(5\)
Cisco NX-OS=6.2\(2\)
Cisco NX-OS=6.2\(2a\)
Cisco NX-OS=6.2\(6\)
Cisco NX-OS=6.2\(6b\)
Cisco NX-OS=6.2\(8\)
Cisco NX-OS=6.2\(8a\)
Cisco NX-OS=6.2\(8b\)
Cisco NX-OS=6.2\(10\)
Cisco NX-OS=6.2\(12\)
Cisco NX-OS=6.2\(14\)s1
Cisco NX-OS=7.2\(0\)n1\(0.1\)
Cisco Nexus 7004
Cisco Nexus 7009
Cisco Nexus 7010
Cisco Nexus 7018
Cisco Nexus 7702
Cisco Nexus 7706
Cisco Nexus 7710
Cisco Nexus 7718

Event History

Oct 6, 2016
CVE Published
via MITRE·10:00 AM
Data Sourced
via MITRE·10:00 AM
Description
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Frequently Asked Questions

1

What is the severity of CVE-2015-6393?

The severity of CVE-2015-6393 is considered critical as it allows remote attackers to cause a denial of service by sending malformed DHCP packets.

2

How do I fix CVE-2015-6393?

To fix CVE-2015-6393, upgrade your Cisco NX-OS to a version that is not affected by this vulnerability.

3

Which devices are affected by CVE-2015-6393?

CVE-2015-6393 affects various Cisco Nexus devices running NX-OS versions 4.1 through 7.3 and 11.0 through 11.2.

4

What types of attacks does CVE-2015-6393 enable?

CVE-2015-6393 enables remote denial of service attacks via malformed DHCP packets targeting the DHCPv4 relay agent.

5

Is there a workaround for CVE-2015-6393?

There are no specific workarounds mentioned for CVE-2015-6393; the recommended action is to apply the appropriate software updates.

Company

Resources

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