Red Hat Ansible Automation Platform 2.4 for…: Improper Neutralization of Special Elements Used in a Template Engine
CVE-2023-5764 is a high-severity improper neutralization of special elements used in a template engine vulnerability in Red Hat Ansible Automation Platform 2.4 for RHEL 8 from Red Hat, with a CVSS 3.1 base score of 7.8 out of 10. It can be exploited with local access to the system by an attacker with a low-privileged account, without any action from a user. There is no confirmed exploitation so far. EPSS estimates a 0.57% chance of exploitation within 30 days, which is low compared with other CVEs.
High severity with no evidence of exploitation so far.
What to do
- Update Ansible to 2.14.12 or 2.15.7, whichever matches your release line, or a later version.
- Read the advisory on access.redhat.com for workarounds and exact fixed builds.
Affected products and versions
| Vendor | Product | Affected versions | Fixed in |
|---|---|---|---|
| Red Hat | Red Hat Ansible Automation Platform 2.4 for RHEL 8 | Not specified in the record | Not stated |
| Red Hat | Red Hat Ansible Automation Platform 2.4 for RHEL 9 | Not specified in the record | Not stated |
| Red Hat | Red Hat Ansible Automation Platform 1.2 | Not specified in the record | Not stated |
| Red Hat | Ansible | before 2.14.12; 2.15.0 up to, but not including, 2.15.7; 2.16.0 | 2.14.12, 2.15.7 |
| Fedora Project | Extra Packages For Enterprise Linux | 8.0 | Not stated |
| Fedora Project | Fedora | 38; 39 | Not stated |
| Red Hat | Ansible Automation Platform | 2.4 | Not stated |
| Red Hat | Ansible Developer | 1.1 | Not stated |
| Red Hat | Ansible Inside | 1.2 | Not stated |
Version data comes from the organisation that assigned the CVE. Confirm against the vendor advisory before deciding you are unaffected.
How the severity score breaks down
- Attack vector
- LocalThe attacker needs local access or must trick a user into running something.
- Attack complexity
- LowNo special conditions are needed; the attack works reliably.
- Privileges required
- LowA basic user account is enough.
- User interaction
- NoneNo action by a victim is required.
- Scope
- UnchangedImpact stays within the vulnerable component.
- Confidentiality
- HighAll data handled by the component can be read.
- Integrity
- HighData or code can be modified at will.
- Availability
- HighThe component can be taken down completely.
Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H. Scored by NVD.
| Scoring system | Score | Severity | Scored by |
|---|---|---|---|
| CVSS 3.1 | 7.1 | High | CNA (redhat.com) |
| CVSS 3.1 | 7.8 | High | NVD |
Official description
A template injection flaw was found in Ansible where a user's controller internal templating operations may remove the unsafe designation from template data. This issue could allow an attacker to use a specially crafted file to introduce templating injection when supplying templating data.
Source: the CVE record as published by its numbering authority, via NVD and CVE.org.
The underlying weakness: Improper Neutralization of Special Elements Used in a Template Engine
The product uses a template engine to insert or process externally-influenced input, but it does not neutralize or incorrectly neutralizes special elements or syntax that can be interpreted as template expressions or other code directives when processed by the engine.
How developers prevent this class of flaw
- Choose a template engine that offers a sandbox or restricted mode, or at least limits the power of any available expressions, function calls, or commands.
- Use the template engine's sandbox or restricted mode, if available.
Timeline
- CVE record published.
- CISA published its SSVC assessment (exploitation: none, automatable: no, technical impact: total).
- Record last changed materially (score, affected products, status or references).
References
Advisories
Other references
Other vulnerabilities in Red Hat Ansible Automation Platform 2.4 for RHEL 8
- 9.9 Critical severity
- 9.1 Critical severity
- 9.9 Critical severity
- 9.9 Critical severity
- 9.6 Critical severity
- 7.5 High severity
Recent Improper Neutralization of Special Elements Used in a Template Engine vulnerabilities
- 7.2 High severity
- 7.2 High severity
- 8.8 High severity
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