THREATPORT/VULNERABILITY/CVE-2018-0418
HIGH SEVERITY

CVE-2018-0418

Ios Xr vulnerability

CVSS
8.6
EPSS
4.0%
EPSS pct
89th
Exploited
No known
A vulnerability in the Local Packet Transport Services (LPTS) feature set of Cisco ASR 9000 Series Aggregation Services Router Software could allow an unauthenticated, remote attacker to cause a denial of service (DoS) condition on an affected device. The vulnerability is due to a lack of input and validation checking on certain Precision Time Protocol (PTP) ingress traffic to an affected device. An attacker could exploit this vulnerability by injecting malformed traffic into an affected device. A successful exploit could allow the attacker to cause services on the device to become unresponsive, resulting in a DoS condition. Cisco Bug IDs: CSCvj22858.
Affected vendor
Cisco
Affected product
Ios Xr
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H
Weakness type (CWE)
  • CWE-400 — Uncontrolled Resource Consumption
  • CWE-20 — Improper Input Validation
Published
2018-08-15

Risk analysis

Based on its CVSS vector, this vulnerability is exploitable over the network, low attack complexity, requiring no privileges, no user interaction. Successful exploitation leads to high impact to availability.

Its EPSS score of 4.0% reflects a lower probability of exploitation activity in the wild over the next 30 days, placing it above 89% of all scored CVEs.

Check your external exposure to CVE-2018-0418

  • Confirm whether Cisco Ios Xr is running on any internet-facing host or subdomain.
  • Match discovered service fingerprints against the version affected by CVE-2018-0418.
  • Prioritise remediation if the asset is public, business-critical, or near authentication/payment flows.

How ThreatPort helps with CVE-2018-0418

ThreatPort's external attack surface scanner checks your internet-facing assets — agentlessly, from the outside in — for the exposed services and versions that CVE-2018-0418 affects, then prioritises the finding by real risk using CISA KEV and FIRST.org EPSS.

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