cbcvebase.
CVE-2018-0308
published 2018-06-20

CVE-2018-0308: A vulnerability in the Cisco Fabric Services component of Cisco FXOS Software and Cisco NX-OS Software could allow an unauthenticated, remote attacker to…

PriorityP266critical9.8CVSS 3.0
AVNACLPRNUINSUCHIHAH
EPSS
5.66%
92.0th percentile
A vulnerability in the Cisco Fabric Services component of Cisco FXOS Software and Cisco NX-OS Software could allow an unauthenticated, remote attacker to execute arbitrary code or cause a denial of service (DoS) condition. The vulnerability exists because the affected software insufficiently validates header values in Cisco Fabric Services packets. An attacker could exploit this vulnerability by sending a crafted Cisco Fabric Services packet to an affected device. A successful exploit could allow the attacker to cause a buffer overflow that could allow the attacker to execute arbitrary code or cause a DoS condition. This vulnerability affects the following if configured to use Cisco Fabric Services: Firepower 4100 Series Next-Generation Firewalls, Firepower 9300 Security Appliance, MDS 9000 Series Multilayer Switches, Nexus 2000 Series Fabric Extenders, Nexus 3000 Series Switches, Nexus 3500 Platform Switches, Nexus 5500 Platform Switches, Nexus 5600 Platform Switches, Nexus 6000 Series Switches, Nexus 7000 Series Switches, Nexus 7700 Series Switches, Nexus 9000 Series Switches in standalone NX-OS mode, Nexus 9500 R-Series Line Cards and Fabric Modules, UCS 6100 Series Fabric Interconnects, UCS 6200 Series Fabric Interconnects, UCS 6300 Series Fabric Interconnects. Cisco Bug IDs: CSCvd69954, CSCve02463, CSCve02785, CSCve02787, CSCve02804, CSCve04859.

Affected

13 ranges
VendorProductVersion rangeFixed in
ciscofirepower_9000_firmware
ciscofirepower_9000_firmware
ciscofxos_and_nx-os
cisconexus_5000_firmware
cisconexus_5000_firmware
cisconexus_5000_firmware
cisconexus_7000_firmware
cisconexus_7000_firmware
cisconexus_7000_firmware
cisconexus_9000_firmware
cisconexus_9000_firmware
ciscounified_computing_system_firmware
ciscounified_computing_system_firmware

Detection & IOCsextracted from sources · hover to see the quote

  • Detect crafted Cisco Fabric Services packets with insufficiently validated header values that could trigger a buffer overflow on affected FXOS/NX-OS devices
  • Monitor for unauthenticated remote connections targeting the Cisco Fabric Services (CFS) component on affected Cisco FXOS and NX-OS devices; anomalous CFS traffic from untrusted/external sources should be alerted on
  • Scope detection to devices configured to use Cisco Fabric Services, including Firepower 4100/9300, MDS 9000, Nexus 2000/3000/3500/5500/5600/6000/7000/7700/9000/9500, and UCS 6100/6200/6300 series
  • ·Vulnerability is only exploitable on devices that are configured to use Cisco Fabric Services (CFS); devices not using CFS are not affected
  • ·No workarounds are available for this vulnerability; patching via Cisco software updates is the only remediation
  • ·Multiple Cisco Bug IDs are tracked for this single CVE across different affected platforms: CSCvd69954, CSCve02463, CSCve02785, CSCve02787, CSCve02804, CSCve04859

CVSS provenance

nvdv3.09.8CRITICALCVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
nvdv2.07.5HIGHAV:N/AC:L/Au:N/C:P/I:P/A:P
vendor_cisco9.8CRITICAL
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