CVE-2018-0467

Ios Xe vulnerability

CVSS

8.6

EPSS

3.8%

EPSS pct

89th

Exploited

No known

A vulnerability in the IPv6 processing code of Cisco IOS and IOS XE Software could allow an unauthenticated, remote attacker to cause the device to reload. The vulnerability is due to incorrect handling of specific IPv6 hop-by-hop options. An attacker could exploit this vulnerability by sending a malicious IPv6 packet to or through the affected device. A successful exploit could allow the attacker to cause the device to reload, resulting in a denial of service (DoS) condition on an affected device.

Affected vendor

Cisco

Affected product

Ios Xe

CVSS vector

CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H

Weakness type (CWE)

CWE-20 — Improper Input Validation

Published

2018-10-05

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 3.8% 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-2018-0467

Confirm whether Cisco Ios Xe is running on any internet-facing host or subdomain.
Match discovered service fingerprints against the version affected by CVE-2018-0467.
Prioritise remediation if the asset is public, business-critical, or near authentication/payment flows.

How ThreatPort helps with CVE-2018-0467

ThreatPort's external attack surface scanner checks your internet-facing assets — agentlessly, from the outside in — for the exposed services and versions that CVE-2018-0467 affects, then prioritises the finding by real risk using CISA KEV and FIRST.org EPSS.

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