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CVE-2018-1104: Ansible Tower through version 3.2.3 has a vulnerability that allows users only with access to define variab...

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.

UnknownCVSS not scoredNot KEV-listedUpdated
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Glexia's TakeAutomated analysishigh

Security readout for executives and security teams

Plain-English summary

CVE-2018-1104 affects Red Hat Ansible Tower through version 3.2.3. A user who can define variables for a job template could execute arbitrary code on the Tower server. This turns a delegated automation permission into potential server compromise.

Executive priority

Treat this as high priority if Ansible Tower is still deployed at affected versions or broadly delegated. The risk is not public unauthenticated exposure, but server compromise through trusted automation access.

Technical view

The vulnerability is described as improper input validation in Ansible Tower job-template variable handling. The documented precondition is access to define variables for a job template; the documented impact is arbitrary code execution on the Tower server.

Likely exposure

Exposure is likely limited to organizations still running Ansible Tower version 3.2.3 or earlier, especially where non-administrators can define job-template variables.

Exploitation context

The source bundle does not cite active exploitation, and CISA KEV is false. The issue appears to require valid Tower access with job-template variable definition rights, making insider, compromised-account, or over-permissioned-user scenarios most relevant.

Researcher notes

Available evidence identifies affected product, affected version range, required privilege context, CWE-20, and impact. The bundle does not provide CVSS, exploit details, or a named fixed Tower version, so remediation should follow Red Hat advisories.

Mitigation direction

  • Inventory Ansible Tower deployments and confirm version levels.
  • Apply relevant Red Hat errata or current vendor guidance for CVE-2018-1104.
  • Restrict job-template variable definition rights to trusted administrators.
  • Review Tower accounts for excessive job-template permissions.
  • Monitor Tower server activity for suspicious automation changes.

Validation and detection

  • Confirm no Ansible Tower instance is version 3.2.3 or earlier.
  • Review job templates for users or groups allowed to define variables.
  • Check change history for unexpected template or variable modifications.
  • Verify remediation against Red Hat advisories RHSA-2018:1328 and RHSA-2018:1972.
Prepared
Confidence
medium
Sources
7

Public sources used

Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.

Potential ATT&CK relevance

Conservative CVE-to-ATT&CK context

These mappings and lookup hints may be relevant to the vulnerability behavior, CWE, affected product, or exposure path. Glexia-inferred context is not an official MITRE, ATT&CK, CWE, or CVE Program mapping.

ATT&CK lookup starting points

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cwe · low confidence lookup

CWE-20: Exact CWE lookup

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description · low confidence lookup

Execution behavior lookup

The CVE wording references code or command execution, so execution technique review may help defensive triage. This is a Glexia inferred lookup path, not an official MITRE, ATT&CK, or CVE Program mapping.

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cve · low confidence lookup

CVE-2018-1104 mapping review

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Vulnerability profileCVE Program record
Severity
Unknown
CVSS
Not scored
Known Exploited
No
Published
Official CVE source material

CNA and ADP enrichment extracted from CVE v5

These fields come from the CVE record and ADP containers, not from Glexia's Take. They preserve time-varying source decisions such as CISA SSVC, KEV status, CVSS metrics, and provider references.

0CVSS vectors
0Timeline events
0ADP providers
6Source links

CVSS and timeline data

No CVSS vectors or timeline events were available in the normalized CVE source material.

Source materials

Affected products

Products and packages named in the record

VendorProductVersion / packageStatus
Red Hat, Inc.Ansible Towerthrough version 3.2.3Listed
Weakness

CWE details

CWE-20

CWE links open Glexia weakness intelligence pages with official CWE context, developer remediation guidance, and related CVE mappings.