Vulnerability in Octopus Server

CVE-2018-18850

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).

Published · last modified .

CVSS v3 metric

CVSS v3 base score 8.8 (High). Vector: CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H.

EPSS exploit prediction

EPSS: 0.125 (96.1th percentile), scored .

Moderate probability of exploitation in the next 30 days — watch for active exploitation reports. 96th percentile — 96.1% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS trend (30 days)EPSS over the last 30 days for CVE-2018-18850: held from 0.125 to 0.125.

EPSS over last 30 days · oldest: 0.125 · newest: 0.125 · change: 0.000

Affected products

Public proof-of-concept exploits

References

Frequently asked questions

What is CVE-2018-18850?
CVE-2018-18850 is a high-severity vulnerability in Octopus Server. CVSS score: 8.8/10. Published 2018-10-31.
How severe is CVE-2018-18850?
High severity. CVSS v3 base score is 8.8 out of 10.
Is CVE-2018-18850 known to be exploited?
1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.