CVE-2018-0372

CVSS V2 High 7.8 CVSS V3 High 7.5
Description
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.
Overview
  • CVE ID
  • CVE-2018-0372
  • Assigner
  • ykramarz@cisco.com
  • Vulnerability Status
  • Modified
  • Published Version
  • 2018-07-18T23:29:00
  • Last Modified Date
  • 2019-10-09T23:31:54
Weakness Enumerations
CWE URL
CWE-400 http://cwe.mitre.org/data/definitions/400.html
CPE Configuration (Product)
CPE Vulnerable Operator Version Start Version End
AND
cpe:2.3:o:cisco:nx-os:13.0\(1k\):*:*:*:*:*:*:* 1 OR
cpe:2.3:h:cisco:nexus_92160yc-x:-:*:*:*:*:*:*:* 0 OR
cpe:2.3:h:cisco:nexus_92304qc:-:*:*:*:*:*:*:* 0 OR
cpe:2.3:h:cisco:nexus_9236c:-:*:*:*:*:*:*:* 0 OR
cpe:2.3:h:cisco:nexus_9272q:-:*:*:*:*:*:*:* 0 OR
cpe:2.3:h:cisco:nexus_93108tc-ex:-:*:*:*:*:*:*:* 0 OR
cpe:2.3:h:cisco:nexus_93120tx:-:*:*:*:*:*:*:* 0 OR
cpe:2.3:h:cisco:nexus_93128tx:-:*:*:*:*:*:*:* 0 OR
cpe:2.3:h:cisco:nexus_93180yc-ex:-:*:*:*:*:*:*:* 0 OR
cpe:2.3:h:cisco:nexus_9332pq:-:*:*:*:*:*:*:* 0 OR
cpe:2.3:h:cisco:nexus_9372px:-:*:*:*:*:*:*:* 0 OR
cpe:2.3:h:cisco:nexus_9372tx:-:*:*:*:*:*:*:* 0 OR
cpe:2.3:h:cisco:nexus_9396px:-:*:*:*:*:*:*:* 0 OR
cpe:2.3:h:cisco:nexus_9396tx:-:*:*:*:*:*:*:* 0 OR
cpe:2.3:h:cisco:nexus_9504:-:*:*:*:*:*:*:* 0 OR
cpe:2.3:h:cisco:nexus_9508:-:*:*:*:*:*:*:* 0 OR
cpe:2.3:h:cisco:nexus_9516:-:*:*:*:*:*:*:* 0 OR
cpe:2.3:h:cisco:nexus_n9k-c9508-fm-r:-:*:*:*:*:*:*:* 0 OR
cpe:2.3:h:cisco:nexus_n9k-x9636c-r:-:*:*:*:*:*:*:* 0 OR
cpe:2.3:h:cisco:nexus_n9k-x9636q-r:-:*:*:*:*:*:*:* 0 OR
CVSS Version 2
  • Version
  • 2.0
  • Vector String
  • AV:N/AC:L/Au:N/C:N/I:N/A:C
  • Access Vector
  • NETWORK
  • Access Compatibility
  • LOW
  • Authentication
  • NONE
  • Confidentiality Impact
  • NONE
  • Integrity Impact
  • NONE
  • Availability Impact
  • COMPLETE
  • Base Score
  • 7.8
  • Severity
  • HIGH
  • Exploitability Score
  • 10
  • Impact Score
  • 6.9
CVSS Version 3
  • Version
  • 3.0
  • Vector String
  • CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
  • Attack Vector
  • NETWORK
  • Attack Compatibility
  • LOW
  • Privileges Required
  • NONE
  • User Interaction
  • NONE
  • Scope
  • UNCHANGED
  • Confidentiality Impact
  • NONE
  • Availability Impact
  • HIGH
  • Base Score
  • 7.5
  • Base Severity
  • HIGH
  • Exploitability Score
  • 3.9
  • Impact Score
  • 3.6
References
Reference URL Reference Tags
https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-20180718-nexus-9000-dos Vendor Advisory
http://www.securitytracker.com/id/1041348 Third Party Advisory VDB Entry
Sources
Source Name Source URL
NIST https://nvd.nist.gov/vuln/detail/CVE-2018-0372
MITRE https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2018-0372
History
Created Old Value New Value Data Type Notes
2022-05-10 17:07:16 Added to TrackCVE
2022-12-03 10:10:50 psirt@cisco.com ykramarz@cisco.com CVE Assigner updated
2022-12-03 10:10:50 2018-07-18T23:29Z 2018-07-18T23:29:00 CVE Published Date updated
2022-12-03 10:10:50 2019-10-09T23:31:54 CVE Modified Date updated
2022-12-03 10:10:50 Modified Vulnerability Status updated