Vulnerability Monitor

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CVE-2018-0372

A vulnerability in the DHCPv6 feature of the Cisco Nexus 9000 Series Fabric Switches in Application-Centric Infrastructure (ACI) Mode could allow an unauthenticated, remote attacker to cause the device to run low on system memory, which could result in a Denial of Service (DoS) condition on an affected system. The vulnerability is due to improper memory management when DHCPv6 packets are received on an interface of the targeted device. An attacker could exploit this vulnerability by sending a high number of malicious DHCPv6 packets to be processed by an affected device. A successful exploit could allow the attacker to cause the system to run low on memory, which could cause an eventual reboot of an affected device. The vulnerability only applies to IPv6 protocol packets and not for IPv4 protocol packets. This vulnerability affects Cisco Nexus 9000 Series Fabric Switches in ACI Mode running software version 13.0(1k). The vulnerability can only be exploited when unicast routing is enabled on the Bridge Domain (BD). DHCP and DHCP relay do not have to be configured for the vulnerability to be exploited. Cisco Bug IDs: CSCvg38918.

Published

2018-07-18T23:29:00.727

Last Modified

2024-11-21T03:38:05.300

Status

Modified

Source

[email protected]

Severity

CVSSv3.0: 7.5 (HIGH)

CVSSv2 Vector

AV:N/AC:L/Au:N/C:N/I:N/A:C

  • Access Vector: NETWORK
  • Access Complexity: LOW
  • Authentication: NONE
  • Confidentiality Impact: NONE
  • Integrity Impact: NONE
  • Availability Impact: COMPLETE
Exploitability Score

10.0

Impact Score

6.9

Weaknesses
  • Type: Secondary
    CWE-400
  • Type: Primary
    CWE-400
Affected Vendors & Products
Type Vendor Product Version/Range Vulnerable?
Operating System cisco nx-os 13.0\(1k\) Yes
Hardware cisco nexus_92160yc-x - No
Hardware cisco nexus_92304qc - No
Hardware cisco nexus_9236c - No
Hardware cisco nexus_9272q - No
Hardware cisco nexus_93108tc-ex - No
Hardware cisco nexus_93120tx - No
Hardware cisco nexus_93128tx - No
Hardware cisco nexus_93180yc-ex - No
Hardware cisco nexus_9332pq - No
Hardware cisco nexus_9372px - No
Hardware cisco nexus_9372tx - No
Hardware cisco nexus_9396px - No
Hardware cisco nexus_9396tx - No
Hardware cisco nexus_9504 - No
Hardware cisco nexus_9508 - No
Hardware cisco nexus_9516 - No
Hardware cisco nexus_n9k-c9508-fm-r - No
Hardware cisco nexus_n9k-x9636c-r - No
Hardware cisco nexus_n9k-x9636q-r - No
References