RHSA-2026:66482
Vulnerability from csaf_redhat - Published: 2026-09-10 15:33 - Updated: 2026-09-10 22:01A container privilege escalation flaw was found in certain Ansible Automation Platform images. This issue arises from the /etc/passwd file being created with group-writable permissions during the build process. In certain conditions, an attacker who can execute commands within an affected container, even as a non-root user, can leverage their membership in the root group to modify the /etc/passwd file. This vulnerability allows an attacker to add a new user with any arbitrary UID, including UID 0, gaining full root privileges within the container.
| Product | Identifier | Version | Remediation |
|---|---|---|---|
| Unresolved product id: Red Hat Ansible Automation Platform 2.16:registry.redhat.io/ansible-automation-platform/ee-minimal-rhel9@sha256:010515c2961a0678ac9d9cc8433d070eafee3a42cbd912cc33b2a90cf4bdfeab_arm64 | — |
Vendor Fix
fix
|
|
| Unresolved product id: Red Hat Ansible Automation Platform 2.16:registry.redhat.io/ansible-automation-platform/ee-minimal-rhel9@sha256:50b87a3685b1bf23f10a6363b70d51908b68b1ee06233d26cac99cc2c9158462_ppc64le | — |
Vendor Fix
fix
|
|
| Unresolved product id: Red Hat Ansible Automation Platform 2.16:registry.redhat.io/ansible-automation-platform/ee-minimal-rhel9@sha256:810572e996b23324aa78100a2346bda8fb996207ad9f15331a846092e2127c67_amd64 | — |
Vendor Fix
fix
|
|
| Unresolved product id: Red Hat Ansible Automation Platform 2.16:registry.redhat.io/ansible-automation-platform/ee-minimal-rhel9@sha256:c60bade98d891acd3d4ba3e2a8a76ccb3bb5fe346c0d61392c0af040bdb5428d_s390x | — |
Vendor Fix
fix
|
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"Mike Whale"
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"name": "Incorrect Default Permissions"
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"ids": [
{
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"notes": [
{
"category": "description",
"text": "A container privilege escalation flaw was found in certain Ansible Automation Platform images. This issue arises from the /etc/passwd file being created with group-writable permissions during the build process. In certain conditions, an attacker who can execute commands within an affected container, even as a non-root user, can leverage their membership in the root group to modify the /etc/passwd file. This vulnerability allows an attacker to add a new user with any arbitrary UID, including UID 0, gaining full root privileges within the container.",
"title": "Vulnerability description"
},
{
"category": "summary",
"text": "ansible-automation-platform: privilege escalation via excessive group writable /etc/passwd permissions",
"title": "Vulnerability summary"
},
{
"category": "other",
"text": "Red Hat Product Security has rated this vulnerability as moderate severity for affected products which run on OpenShift. The vulnerability allows for potential privilege escalation within a container, but OpenShift\u0027s default, multi-layered security posture effectively mitigates this risk. \n\nThe primary controls include the default Security Context Constraints (SCC), which severely limit a container\u0027s permissions from the start, and SELinux, which enforces mandatory access control to ensure strict isolation. While other container runtime environments may have different controls available and require case-by-case analysis, OpenShift\u0027s built-in defenses are designed to prevent this type of attack.\n\nOut of Box RHEL configuration isolates a single process inside a container. Unless multiple processes are packaged inside a single container, that defeats the principle behind containerization, this bug can not be used to meaningfully escalate privileges.\n\nAlso, RHEL, and any common linux distributions do NOT add any additional users to the root group. The presence of the root group is strictly due to conformance with POSIX permission management requirements and can be considered to be an artifact of filesystem permission limitations.",
"title": "Statement"
},
{
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"text": "The CVSS score(s) listed for this vulnerability do not reflect the associated product\u0027s status, and are included for informational purposes to better understand the severity of this vulnerability.",
"title": "CVSS score applicability"
}
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"release_date": "2026-04-08T13:47:09.259000+00:00",
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"date": "2026-09-10T15:33:18+00:00",
"details": "Before applying this update, make sure all previously released errata relevant to your system have been applied.\nFor details on how to apply this update, refer to:\nhttps://docs.redhat.com/en/documentation/red_hat_ansible_automation_platform/latest/html/creating_and_using_execution_environments/index",
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"scores": [
{
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"attackVector": "LOCAL",
"availabilityImpact": "HIGH",
"baseScore": 6.4,
"baseSeverity": "MEDIUM",
"confidentialityImpact": "HIGH",
"integrityImpact": "HIGH",
"privilegesRequired": "HIGH",
"scope": "UNCHANGED",
"userInteraction": "NONE",
"vectorString": "CVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:U/C:H/I:H/A:H",
"version": "3.1"
},
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"threats": [
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}
],
"title": "ansible-automation-platform: privilege escalation via excessive group writable /etc/passwd permissions"
}
]
}
Sightings
| Author | Source | Type | Date | Other |
|---|
Nomenclature
- Seen: The vulnerability was mentioned, discussed, or observed by the user.
- Confirmed: The vulnerability has been validated from an analyst's perspective.
- Published Proof of Concept: A public proof of concept is available for this vulnerability.
- Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
- Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
- Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
- Not confirmed: The user expressed doubt about the validity of the vulnerability.
- Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.
Related by attack behaviour
Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.