RHSA-2026:51079
Vulnerability from csaf_redhat - Published: 2026-08-06 13:31 - Updated: 2026-09-24 22:26Summary
Red Hat Security Advisory: RHTAS 1.0.2 - GA Release Of the Policy Controller Operator
Severity
Important
Notes
Topic: The GA release of the RHTAS Policy Controller Operator.
For more details please visit the product documentation at https://access.redhat.com/documentation/en-us/red_hat_trusted_artifact_signer/1.4
Details: The RHTAS Policy Controller Operator can be used with OpenShift Container Platform 4.16, 4.17, 4.18, 4.19, 4.20, 4.21, 4.22
Terms of Use: This content is licensed under the Creative Commons Attribution 4.0 International License (https://creativecommons.org/licenses/by/4.0/). If you distribute this content, or a modified version of it, you must provide attribution to Red Hat Inc. and provide a link to the original.
A flaw was found in golang.org/x/crypto/ssh. The Verify() method, responsible for FIDO/U2F security key types, did not properly check for user presence. This allowed signatures to be accepted without requiring a physical touch on the hardware security key. As a result, an attacker could potentially use a hardware security key in an unattended manner, bypassing a critical security control designed to ensure user intent.
8.1 (High)
Affected products
Fixed
1 product
| Product | Identifier | Version | Remediation |
|---|---|---|---|
| Unresolved product id: Red Hat Trusted Artifact Signer 1.4:registry.redhat.io/rhtas/policy-controller-rhel9@sha256:4e402c4bd5cf40b4e57bc1a3c0b6f0a796bfed3c65407e7f88a6831a95cf10de_amd64 | — |
Vendor Fix
fix
|
Threats
Impact
Important
A flaw was found in golang.org/x/crypto/ssh. A remote attacker could send specially crafted inputs to the AES-GCM packet decoder. This could lead to an incorrectly placed cast from bytes to an integer, causing a server-side panic and resulting in a Denial of Service (DoS) for the affected system.
7.5 (High)
Affected products
Fixed
1 product, the same list as for
CVE-2026-39831
Threats
Impact
Important
References
21 references
{
"document": {
"aggregate_severity": {
"namespace": "https://access.redhat.com/security/updates/classification/",
"text": "Important"
},
"category": "csaf_security_advisory",
"csaf_version": "2.0",
"distribution": {
"text": "Copyright \u00a9 Red Hat, Inc. All rights reserved.",
"tlp": {
"label": "WHITE",
"url": "https://www.first.org/tlp/"
}
},
"lang": "en",
"notes": [
{
"category": "summary",
"text": "The GA release of the RHTAS Policy Controller Operator.\nFor more details please visit the product documentation at https://access.redhat.com/documentation/en-us/red_hat_trusted_artifact_signer/1.4",
"title": "Topic"
},
{
"category": "general",
"text": "The RHTAS Policy Controller Operator can be used with OpenShift Container Platform 4.16, 4.17, 4.18, 4.19, 4.20, 4.21, 4.22",
"title": "Details"
},
{
"category": "legal_disclaimer",
"text": "This content is licensed under the Creative Commons Attribution 4.0 International License (https://creativecommons.org/licenses/by/4.0/). If you distribute this content, or a modified version of it, you must provide attribution to Red Hat Inc. and provide a link to the original.",
"title": "Terms of Use"
}
],
"publisher": {
"category": "vendor",
"contact_details": "https://access.redhat.com/security/team/contact/",
"issuing_authority": "Red Hat Product Security is responsible for vulnerability handling across all Red Hat products and services.",
"name": "Red Hat Product Security",
"namespace": "https://www.redhat.com"
},
"references": [
{
"category": "self",
"summary": "https://access.redhat.com/errata/RHSA-2026:51079",
"url": "https://access.redhat.com/errata/RHSA-2026:51079"
},
{
"category": "external",
"summary": "https://access.redhat.com/documentation/en-us/red_hat_trusted_artifact_signer/1.4",
"url": "https://access.redhat.com/documentation/en-us/red_hat_trusted_artifact_signer/1.4"
},
{
"category": "external",
"summary": "https://access.redhat.com/security/cve/CVE-2026-39831",
"url": "https://access.redhat.com/security/cve/CVE-2026-39831"
},
{
"category": "external",
"summary": "https://access.redhat.com/security/cve/CVE-2026-46597",
"url": "https://access.redhat.com/security/cve/CVE-2026-46597"
},
{
"category": "external",
"summary": "https://access.redhat.com/security/updates/classification/",
"url": "https://access.redhat.com/security/updates/classification/"
},
{
"category": "self",
"summary": "Canonical URL",
"url": "https://security.access.redhat.com/data/csaf/v2/advisories/2026/rhsa-2026_51079.json"
}
],
"title": "Red Hat Security Advisory: RHTAS 1.0.2 - GA Release Of the Policy Controller Operator",
"tracking": {
"current_release_date": "2026-09-24T22:26:56+00:00",
"generator": {
"date": "2026-09-24T22:26:56+00:00",
"engine": {
"name": "Red Hat SDEngine",
"version": "5.4.0"
}
},
"id": "RHSA-2026:51079",
"initial_release_date": "2026-08-06T13:31:01+00:00",
"revision_history": [
{
"date": "2026-08-06T13:31:01+00:00",
"number": "1",
"summary": "Initial version"
},
{
"date": "2026-09-04T00:36:24+00:00",
"number": "2",
"summary": "Last updated version"
},
{
"date": "2026-09-24T22:26:56+00:00",
"number": "3",
"summary": "Last generated version"
}
],
"status": "final",
"version": "3"
}
},
"product_tree": {
"branches": [
{
"branches": [
{
"branches": [
{
"category": "product_name",
"name": "Red Hat Trusted Artifact Signer 1.4",
"product": {
"name": "Red Hat Trusted Artifact Signer 1.4",
"product_id": "Red Hat Trusted Artifact Signer 1.4",
"product_identification_helper": {
"cpe": "cpe:/a:redhat:trusted_artifact_signer:1.4::el9"
}
}
}
],
"category": "product_family",
"name": "Red Hat Trusted Artifact Signer"
},
{
"branches": [
{
"category": "product_version",
"name": "registry.redhat.io/rhtas/policy-controller-rhel9@sha256:4e402c4bd5cf40b4e57bc1a3c0b6f0a796bfed3c65407e7f88a6831a95cf10de_amd64",
"product": {
"name": "registry.redhat.io/rhtas/policy-controller-rhel9@sha256:4e402c4bd5cf40b4e57bc1a3c0b6f0a796bfed3c65407e7f88a6831a95cf10de_amd64",
"product_id": "registry.redhat.io/rhtas/policy-controller-rhel9@sha256:4e402c4bd5cf40b4e57bc1a3c0b6f0a796bfed3c65407e7f88a6831a95cf10de_amd64",
"product_identification_helper": {
"purl": "pkg:oci/policy-controller-rhel9@sha256%3A4e402c4bd5cf40b4e57bc1a3c0b6f0a796bfed3c65407e7f88a6831a95cf10de?arch=amd64\u0026repository_url=registry.redhat.io/rhtas/policy-controller-rhel9\u0026tag=1785416288"
}
}
}
],
"category": "architecture",
"name": "amd64"
}
],
"category": "vendor",
"name": "Red Hat"
}
],
"relationships": [
{
"category": "default_component_of",
"full_product_name": {
"name": "registry.redhat.io/rhtas/policy-controller-rhel9@sha256:4e402c4bd5cf40b4e57bc1a3c0b6f0a796bfed3c65407e7f88a6831a95cf10de_amd64 as a component of Red Hat Trusted Artifact Signer 1.4",
"product_id": "Red Hat Trusted Artifact Signer 1.4:registry.redhat.io/rhtas/policy-controller-rhel9@sha256:4e402c4bd5cf40b4e57bc1a3c0b6f0a796bfed3c65407e7f88a6831a95cf10de_amd64"
},
"product_reference": "registry.redhat.io/rhtas/policy-controller-rhel9@sha256:4e402c4bd5cf40b4e57bc1a3c0b6f0a796bfed3c65407e7f88a6831a95cf10de_amd64",
"relates_to_product_reference": "Red Hat Trusted Artifact Signer 1.4"
}
]
},
"vulnerabilities": [
{
"cve": "CVE-2026-39831",
"cwe": {
"id": "CWE-347",
"name": "Improper Verification of Cryptographic Signature"
},
"discovery_date": "2026-05-22T04:01:12.861178+00:00",
"ids": [
{
"system_name": "Red Hat Bugzilla ID",
"text": "2480675"
}
],
"notes": [
{
"category": "description",
"text": "A flaw was found in golang.org/x/crypto/ssh. The Verify() method, responsible for FIDO/U2F security key types, did not properly check for user presence. This allowed signatures to be accepted without requiring a physical touch on the hardware security key. As a result, an attacker could potentially use a hardware security key in an unattended manner, bypassing a critical security control designed to ensure user intent.",
"title": "Vulnerability description"
},
{
"category": "summary",
"text": "golang.org/x/crypto/ssh: golang.org/x/crypto/ssh: Security key bypass due to missing user presence check",
"title": "Vulnerability summary"
},
{
"category": "general",
"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"
}
],
"product_status": {
"fixed": [
"Red Hat Trusted Artifact Signer 1.4:registry.redhat.io/rhtas/policy-controller-rhel9@sha256:4e402c4bd5cf40b4e57bc1a3c0b6f0a796bfed3c65407e7f88a6831a95cf10de_amd64"
]
},
"references": [
{
"category": "self",
"summary": "Canonical URL",
"url": "https://access.redhat.com/security/cve/CVE-2026-39831"
},
{
"category": "external",
"summary": "RHBZ#2480675",
"url": "https://bugzilla.redhat.com/show_bug.cgi?id=2480675"
},
{
"category": "external",
"summary": "https://www.cve.org/CVERecord?id=CVE-2026-39831",
"url": "https://www.cve.org/CVERecord?id=CVE-2026-39831"
},
{
"category": "external",
"summary": "https://nvd.nist.gov/vuln/detail/CVE-2026-39831",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2026-39831"
},
{
"category": "external",
"summary": "https://go.dev/cl/781662",
"url": "https://go.dev/cl/781662"
},
{
"category": "external",
"summary": "https://go.dev/issue/79566",
"url": "https://go.dev/issue/79566"
},
{
"category": "external",
"summary": "https://groups.google.com/g/golang-announce/c/a082jnz-LvI",
"url": "https://groups.google.com/g/golang-announce/c/a082jnz-LvI"
},
{
"category": "external",
"summary": "https://pkg.go.dev/vuln/GO-2026-5019",
"url": "https://pkg.go.dev/vuln/GO-2026-5019"
}
],
"release_date": "2026-05-22T02:31:27.436000+00:00",
"remediations": [
{
"category": "vendor_fix",
"date": "2026-08-06T13:31:01+00:00",
"details": "The RHTAS Policy Controller Operator is Helm-based operator for deploying and managing instances of the Sigstore Policy Controller on OpenShift. It is a self-managed on-premise deployment of the Policy Controller Helm Charts available at https://github.com/sigstore/helm-charts/tree/main/charts/policy-controller\n\nPlatform Engineers, Software Developers and Security Professionals may use the RHTAS Policy Controller Operator to enforce policies on OCP clusters by using supply-chain metadata.\n\nFor details on using the RHTAS Policy Controller Operator, refer to the product documentation at https://access.redhat.com/documentation/en-us/red_hat_trusted_artifact_signer/1.4",
"product_ids": [
"Red Hat Trusted Artifact Signer 1.4:registry.redhat.io/rhtas/policy-controller-rhel9@sha256:4e402c4bd5cf40b4e57bc1a3c0b6f0a796bfed3c65407e7f88a6831a95cf10de_amd64"
],
"restart_required": {
"category": "none"
},
"url": "https://access.redhat.com/errata/RHSA-2026:51079"
}
],
"scores": [
{
"cvss_v3": {
"attackComplexity": "LOW",
"attackVector": "NETWORK",
"availabilityImpact": "NONE",
"baseScore": 8.1,
"baseSeverity": "HIGH",
"confidentialityImpact": "HIGH",
"integrityImpact": "HIGH",
"privilegesRequired": "LOW",
"scope": "UNCHANGED",
"userInteraction": "NONE",
"vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N",
"version": "3.1"
},
"products": [
"Red Hat Trusted Artifact Signer 1.4:registry.redhat.io/rhtas/policy-controller-rhel9@sha256:4e402c4bd5cf40b4e57bc1a3c0b6f0a796bfed3c65407e7f88a6831a95cf10de_amd64"
]
}
],
"threats": [
{
"category": "impact",
"details": "Important"
}
],
"title": "golang.org/x/crypto/ssh: golang.org/x/crypto/ssh: Security key bypass due to missing user presence check"
},
{
"cve": "CVE-2026-46597",
"cwe": {
"id": "CWE-681",
"name": "Incorrect Conversion between Numeric Types"
},
"discovery_date": "2026-05-22T04:01:21.721980+00:00",
"ids": [
{
"system_name": "Red Hat Bugzilla ID",
"text": "2480678"
}
],
"notes": [
{
"category": "description",
"text": "A flaw was found in golang.org/x/crypto/ssh. A remote attacker could send specially crafted inputs to the AES-GCM packet decoder. This could lead to an incorrectly placed cast from bytes to an integer, causing a server-side panic and resulting in a Denial of Service (DoS) for the affected system.",
"title": "Vulnerability description"
},
{
"category": "summary",
"text": "golang.org/x/crypto/ssh: golang.org/x/crypto/ssh: Denial of Service via crafted AES-GCM packet decoder inputs",
"title": "Vulnerability summary"
},
{
"category": "other",
"text": "This Important denial of service flaw in `golang.org/x/crypto/ssh` allows a remote attacker to trigger a server-side panic by sending specially crafted inputs to the AES-GCM packet decoder. This vulnerability could lead to service unavailability in Red Hat products that incorporate and expose SSH services built with the affected `golang.org/x/crypto/ssh` component.",
"title": "Statement"
},
{
"category": "general",
"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"
}
],
"product_status": {
"fixed": [
"Red Hat Trusted Artifact Signer 1.4:registry.redhat.io/rhtas/policy-controller-rhel9@sha256:4e402c4bd5cf40b4e57bc1a3c0b6f0a796bfed3c65407e7f88a6831a95cf10de_amd64"
]
},
"references": [
{
"category": "self",
"summary": "Canonical URL",
"url": "https://access.redhat.com/security/cve/CVE-2026-46597"
},
{
"category": "external",
"summary": "RHBZ#2480678",
"url": "https://bugzilla.redhat.com/show_bug.cgi?id=2480678"
},
{
"category": "external",
"summary": "https://www.cve.org/CVERecord?id=CVE-2026-46597",
"url": "https://www.cve.org/CVERecord?id=CVE-2026-46597"
},
{
"category": "external",
"summary": "https://nvd.nist.gov/vuln/detail/CVE-2026-46597",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2026-46597"
},
{
"category": "external",
"summary": "https://go.dev/cl/781620",
"url": "https://go.dev/cl/781620"
},
{
"category": "external",
"summary": "https://go.dev/issue/79561",
"url": "https://go.dev/issue/79561"
},
{
"category": "external",
"summary": "https://groups.google.com/g/golang-announce/c/a082jnz-LvI",
"url": "https://groups.google.com/g/golang-announce/c/a082jnz-LvI"
},
{
"category": "external",
"summary": "https://pkg.go.dev/vuln/GO-2026-5013",
"url": "https://pkg.go.dev/vuln/GO-2026-5013"
}
],
"release_date": "2026-05-22T02:31:26.754000+00:00",
"remediations": [
{
"category": "vendor_fix",
"date": "2026-08-06T13:31:01+00:00",
"details": "The RHTAS Policy Controller Operator is Helm-based operator for deploying and managing instances of the Sigstore Policy Controller on OpenShift. It is a self-managed on-premise deployment of the Policy Controller Helm Charts available at https://github.com/sigstore/helm-charts/tree/main/charts/policy-controller\n\nPlatform Engineers, Software Developers and Security Professionals may use the RHTAS Policy Controller Operator to enforce policies on OCP clusters by using supply-chain metadata.\n\nFor details on using the RHTAS Policy Controller Operator, refer to the product documentation at https://access.redhat.com/documentation/en-us/red_hat_trusted_artifact_signer/1.4",
"product_ids": [
"Red Hat Trusted Artifact Signer 1.4:registry.redhat.io/rhtas/policy-controller-rhel9@sha256:4e402c4bd5cf40b4e57bc1a3c0b6f0a796bfed3c65407e7f88a6831a95cf10de_amd64"
],
"restart_required": {
"category": "none"
},
"url": "https://access.redhat.com/errata/RHSA-2026:51079"
},
{
"category": "workaround",
"details": "Mitigation for this issue is either not available or the currently available options do not meet the Red Hat Product Security criteria comprising ease of use and deployment, applicability to widespread installation base, or stability.",
"product_ids": [
"Red Hat Trusted Artifact Signer 1.4:registry.redhat.io/rhtas/policy-controller-rhel9@sha256:4e402c4bd5cf40b4e57bc1a3c0b6f0a796bfed3c65407e7f88a6831a95cf10de_amd64"
]
}
],
"scores": [
{
"cvss_v3": {
"attackComplexity": "LOW",
"attackVector": "NETWORK",
"availabilityImpact": "HIGH",
"baseScore": 7.5,
"baseSeverity": "HIGH",
"confidentialityImpact": "NONE",
"integrityImpact": "NONE",
"privilegesRequired": "NONE",
"scope": "UNCHANGED",
"userInteraction": "NONE",
"vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
"version": "3.1"
},
"products": [
"Red Hat Trusted Artifact Signer 1.4:registry.redhat.io/rhtas/policy-controller-rhel9@sha256:4e402c4bd5cf40b4e57bc1a3c0b6f0a796bfed3c65407e7f88a6831a95cf10de_amd64"
]
}
],
"threats": [
{
"category": "impact",
"details": "Important"
}
],
"title": "golang.org/x/crypto/ssh: golang.org/x/crypto/ssh: Denial of Service via crafted AES-GCM packet decoder inputs"
}
]
}
Loading…
Loading…
Experimental. This forecast is provided for visualization only and may change without notice. Do not use it for operational decisions.
Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.
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.
Loading…
Loading…
The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the
vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base
model, served locally by ML-Gateway.
They have not been verified by an analyst and are provided for guidance only.
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.
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.
Loading…
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.
Loading…