cbcvebase.
CVE-2018-0151
published 2018-03-28

CVE-2018-0151: A vulnerability in the quality of service (QoS) subsystem of Cisco IOS Software and Cisco IOS XE Software could allow an unauthenticated, remote attacker to…

PriorityP189critical9.8CVSS 3.1
AVNACLPRNUINSUCHIHAH
KEVITW
CISA Known Exploited Vulnerabilitydue 2022-03-17
Exploited in the wild
EPSS
14.47%
96.2th percentile
A vulnerability in the quality of service (QoS) subsystem of Cisco IOS Software and Cisco IOS XE Software could allow an unauthenticated, remote attacker to cause a denial of service (DoS) condition or execute arbitrary code with elevated privileges. The vulnerability is due to incorrect bounds checking of certain values in packets that are destined for UDP port 18999 of an affected device. An attacker could exploit this vulnerability by sending malicious packets to an affected device. When the packets are processed, an exploitable buffer overflow condition may occur. A successful exploit could allow the attacker to execute arbitrary code on the affected device with elevated privileges. The attacker could also leverage this vulnerability to cause the device to reload, causing a temporary DoS condition while the device is reloading. The malicious packets must be destined to and processed by an affected device. Traffic transiting a device will not trigger the vulnerability. Cisco Bug IDs: CSCvf73881.

Affected

2 ranges
VendorProductVersion rangeFixed in
ciscoios_and_ios_xe
ciscoios_xe

Detection & IOCsextracted from sources · hover to see the quote

portUDP/18999
snort
Snort Rules 46110 and 46111
  • Monitor and alert on inbound packets destined for UDP port 18999 on Cisco IOS/IOS XE devices; only packets destined to and processed by the device (not transit traffic) trigger the vulnerability.
  • Apply a Control Plane Policing (CoPP) policy to deny all traffic destined to UDP port 18999 as a detection/blocking measure for devices not using Adaptive QoS for DMVPN.
  • ·The vulnerability is only exploitable when the Adaptive QoS for DMVPN feature is in use; devices not using this feature can mitigate via CoPP, but must remove the CoPP policy if the feature is later configured (requiring a full upgrade first).
  • ·Affected Rockwell Automation Allen-Bradley Stratix 5900 Services Router versions 15.6.3M1 and earlier are vulnerable due to use of a vulnerable version of Cisco IOS or IOS XE.

CVSS provenance

nvdv3.19.8CRITICALCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
nvdv2.010.0CRITICALAV:N/AC:L/Au:N/C:C/I:C/A:C
vulncheck9.8CRITICAL
cisa9.8CRITICAL
vendor_cisco9.8CRITICAL
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