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Fencer Intel
high 8.8

CVE-2018-1104 json

Ansible Tower through version 3.2.3 has a vulnerability that allows users only with access to define variables for a job template to execut…

published 2018-05-02 8 y ago modified 2026-06-17 4 mo ago also EUVD-2018-11751

cvss
8.8
version 3.0, NVD
cisa kev
Not listed
not in CISA's catalog
epss
2.5%
EPSS 2.5% chance of exploitation in 30 days, percentile 84%
public exploits
0
none known

Summary

Ansible Tower through version 3.2.3 has a vulnerability that allows users only with access to define variables for a job template to execute arbitrary code on the Tower server.

Patch / fix

  • cfme cloudforms managementengine 5.8 5.8.4.5-1.el7cf
  • ansible cloudforms managementengine 5.9, cloudforms managementengine 5.8 2.4.4.0-1.el7ae
  • cfme-gemset cloudforms managementengine 5.8 5.8.4.5-1.el7cf
  • cfme-appliance cloudforms managementengine 5.8 5.8.4.5-1.el7cf
  • python-paramiko cloudforms managementengine 5.9, cloudforms managementengine 5.8 2.1.1-4.el7
  • ansible-tower-setup cloudforms managementengine 5.8 3.1.7-1.el7at
  • ansible-tower-server cloudforms managementengine 5.8 3.1.7-1.el7at
  • rh-ruby23-rubygem-json cloudforms managementengine 5.8 2.1.0-1.el7cf

red hat advisories RHSA-2018:1972RHSA-2018:1328

Vendor advisories

What the vendors themselves say about their products: affected, fixed or not affected, and what to do.

red hat product security vex CVE-2018-1104 updated cvss 8.8

ansible-tower: Remote code execution by users with access to define variables in job templates

  • Red Hat CloudForms Management Engine 5.8 cfme 5.8.4.5-1.el7cf, ansible 2.4.4.0-1.el7ae, cfme-gemset 5.8.4.5-1.el7cf, python-paramiko 2.1.1-4.el7, cfme-appliance 5.8.4.5-1.el7cf, ansible-tower-setup 3.1.7-1.el7at, +2 more
    fixed: vendor fix RHSA-2018:1972
  • Red Hat CloudForms Management Engine 5.9 cfme 5.9.2.4-1.el7cf, ansible 2.4.4.0-1.el7ae, ansible-tower 3.2.4-1.el7at, cfme-gemset 5.9.2.4-1.el7cf, python-paramiko 2.1.1-4.el7, postgresql96 9.6.6-1PGDG.el7, +20 more
    fixed: vendor fix RHSA-2018:1328

Red Hat CSAF VEX © Red Hat, Inc., from https://security.access.redhat.com/data/csaf/v2/vex/; changed: reduced to product statuses and remediations. CC BY 4.0 · csaf

Exploit prediction

2.47% chance of exploitation in the next 30 days, higher than 84% of all scored CVEs (FIRST EPSS, 2026-11-09).

CVSS scores

assigned by version score vector
NVD 3.0 8.8 CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
NVD 2.0 6.5 AV:N/AC:L/Au:S/C:P/I:P/A:P

Affected products

  • Red Hat, Inc. Ansible Tower

Classification

Weakness
  • CWE-20 Improper Input Validation
  • CWE-94 Improper Control of Generation of Code

References

Sources

Fencer Intel keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.