RHEA-2025:4438
Vulnerability from csaf_redhat - Published: 2025-05-05 00:11 - Updated: 2026-08-16 20:35Summary
Red Hat Enhancement Advisory: Red Hat OpenShift Service on AWS 1.0 enhancements
Severity
Important
Notes
Topic: A new Red Hat OpenShift Service on AWS package is available for Red Hat Enterprise Linux 8.
Details: Red Hat OpenShift Service on AWS is a fully-managed OpenShift service, jointly managed and supported by both Red Hat and Amazon Web Services (AWS). Having your clusters maintained by this service gives you the freedom to focus on deploying applications.
For more information about Red Hat OpenShift Service on AWS, see the official documentation: https://access.redhat.com/documentation/en-us/red_hat_openshift_service_on_aws/4/
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 the x/crypto/ssh go library. Applications and libraries that misuse the ServerConfig.PublicKeyCallback callback may be susceptible to an authorization bypass. For example, an attacker may send public keys A and B and authenticate with A. PublicKeyCallback would be called only twice, first with A and then with B. A vulnerable application may then make authorization decisions based on key B, for which the attacker does not control the private key. The misuse of ServerConfig.PublicKeyCallback may cause an authorization bypass.
8.2 (High)
Affected products
Fixed
3 products
| Product | Identifier | Version | Remediation |
|---|---|---|---|
| Unresolved product id: 8Base-ROSA-1.0:rosa-0:1.2.53-5be4e19.el8.src | — |
Vendor Fix
fix
Workaround
|
|
| Unresolved product id: 8Base-ROSA-1.0:rosa-0:1.2.53-5be4e19.el8.x86_64 | — |
Vendor Fix
fix
Workaround
|
|
| Unresolved product id: 8Base-ROSA-1.0:rosa-redistributable-0:1.2.53-5be4e19.el8.x86_64 | — |
Vendor Fix
fix
Workaround
|
Threats
Impact
Important
A flaw was found in the golang-jwt implementation of JSON Web Tokens (JWT). In affected versions, a malicious request with specially crafted Authorization header data may trigger an excessive consumption of resources on the host system. This issue can cause significant performance degradation or an application crash, leading to a denial of service.
7.5 (High)
Affected products
Fixed
3 products
| Product | Identifier | Version | Remediation |
|---|---|---|---|
| Unresolved product id: 8Base-ROSA-1.0:rosa-0:1.2.53-5be4e19.el8.src | — |
Vendor Fix
fix
Workaround
|
|
| Unresolved product id: 8Base-ROSA-1.0:rosa-0:1.2.53-5be4e19.el8.x86_64 | — |
Vendor Fix
fix
Workaround
|
|
| Unresolved product id: 8Base-ROSA-1.0:rosa-redistributable-0:1.2.53-5be4e19.el8.x86_64 | — |
Vendor Fix
fix
Workaround
|
Threats
Impact
Important
References
30 references
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"notes": [
{
"category": "description",
"text": "A flaw was found in the x/crypto/ssh go library. Applications and libraries that misuse the ServerConfig.PublicKeyCallback callback may be susceptible to an authorization bypass. For example, an attacker may send public keys A and B and authenticate with A. PublicKeyCallback would be called only twice, first with A and then with B. A vulnerable application may then make authorization decisions based on key B, for which the attacker does not control the private key. The misuse of ServerConfig.PublicKeyCallback may cause an authorization bypass.",
"title": "Vulnerability description"
},
{
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"title": "Vulnerability summary"
},
{
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"text": "This vulnerability is classified as important rather than critical because it does not directly enable unauthorized access but rather introduces a risk of authorization bypass if the application or library misuses the PublicKeyCallback API. The vulnerability relies on incorrect assumptions made by the application when handling the sequence or state of keys provided during SSH authentication. Properly implemented systems that use the Permissions field or avoid relying on external state remain unaffected. Additionally, the vulnerability does not allow direct exploitation to gain control over a system without the presence of insecure logic in the application\u0027s handling of authentication attempts.\n\n\nRed Hat Enterprise Linux(RHEL) 8 \u0026 9 and Red Hat Openshift marked as not affected as it was determined that the problem function `ServerConfig.PublicKeyCallback`, as noted in the CVE-2024-45337 issue, is not called by Podman, Buildah, containers-common, or the gvisor-tap-vsock projects.",
"title": "Statement"
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"title": "golang.org/x/crypto/ssh: Misuse of ServerConfig.PublicKeyCallback may cause authorization bypass in golang.org/x/crypto"
},
{
"cve": "CVE-2025-30204",
"cwe": {
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"title": "Vulnerability description"
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"title": "Vulnerability summary"
},
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"confidentialityImpact": "NONE",
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"privilegesRequired": "NONE",
"scope": "UNCHANGED",
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{
"category": "impact",
"details": "Important"
}
],
"title": "golang-jwt/jwt: jwt-go allows excessive memory allocation during header parsing"
}
]
}
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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 |
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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.
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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.
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.
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