CVE-2018-18850

Octopus Server vulnerability

CVSS

8.8

EPSS

12.5%

EPSS pct

96th

Exploited

No known

In Octopus Deploy 2018.8.0 through 2018.9.x before 2018.9.1, an authenticated user with permission to modify deployment processes could upload a maliciously crafted YAML configuration, potentially allowing for remote execution of arbitrary code, running in the same context as the Octopus Server (for self-hosted installations by default, SYSTEM).

Affected vendor

Octopus

Affected product

Octopus Server

CVSS vector

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

Published

2018-10-31

Risk analysis

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

Its EPSS score of 12.5% reflects a moderate probability of exploitation activity in the wild over the next 30 days, placing it above 96% of all scored CVEs.

Check your external exposure to CVE-2018-18850

Confirm whether Octopus Octopus Server is running on any internet-facing host or subdomain.
Match discovered service fingerprints against the version affected by CVE-2018-18850.
Prioritise remediation if the asset is public, business-critical, or near authentication/payment flows.

How ThreatPort helps with CVE-2018-18850

ThreatPort's external attack surface scanner checks your internet-facing assets — agentlessly, from the outside in — for the exposed services and versions that CVE-2018-18850 affects, then prioritises the finding by real risk using CISA KEV and FIRST.org EPSS.

Run a free external exposure scan

Are you exposed to CVE-2018-18850?

Run an instant, non-intrusive external scan to check your attack surface for CVE-2018-18850.

Start free scan

No credit card. Agentless.

Related vulnerabilities