Описание
The source-address critical option in the Permissions returned by an authentication callback was only enforced for the PublicKeyCallback and VerifiedPublicKeyCallback paths, extending the fix for CVE-2026-46595. Permissions returned by the PasswordCallback, KeyboardInteractiveCallback, NoClientAuthCallback, and GSSAPIWithMICConfig.AllowLogin callbacks were not validated against the client's remote address, so a source-address restriction set by those callbacks was silently ignored. The check is now applied to the Permissions returned by any authentication callback.
A flaw was found in golang.org/x/crypto/ssh. The component failed to properly enforce source-address restrictions for several authentication methods, including password and keyboard-interactive callbacks. This oversight could allow a remote attacker to bypass intended network-based access controls, potentially leading to unauthorized access to services utilizing the affected component.
Отчет
Critical: A flaw in golang.org/x/crypto/ssh allows remote attackers to bypass source-address restrictions for certain authentication methods. This could lead to unauthorized access to services in Red Hat products that rely on the affected component for network-based access controls.
Меры по смягчению последствий
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.
Затронутые пакеты
| Платформа | Пакет | Состояние | Рекомендация | Релиз |
|---|---|---|---|---|
| Assisted Installer for Red Hat OpenShift Container Platform 2 | assisted/agent-preinstall-image-builder-rhel9 | Under investigation | ||
| Builds for Red Hat OpenShift | openshift-builds/openshift-builds-controller-rhel10 | Affected | ||
| Builds for Red Hat OpenShift | openshift-builds/openshift-builds-controller-rhel9 | Affected | ||
| Builds for Red Hat OpenShift | openshift-builds/openshift-builds-git-cloner-rhel10 | Affected | ||
| Builds for Red Hat OpenShift | openshift-builds/openshift-builds-git-cloner-rhel9 | Affected | ||
| Builds for Red Hat OpenShift | openshift-builds/openshift-builds-image-bundler-rhel10 | Affected | ||
| Builds for Red Hat OpenShift | openshift-builds/openshift-builds-image-bundler-rhel9 | Affected | ||
| Builds for Red Hat OpenShift | openshift-builds/openshift-builds-image-processing-rhel10 | Affected | ||
| Builds for Red Hat OpenShift | openshift-builds/openshift-builds-image-processing-rhel9 | Affected | ||
| Builds for Red Hat OpenShift | openshift-builds/openshift-builds-waiters-rhel10 | Affected |
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Дополнительная информация
Статус:
EPSS
9.1 Critical
CVSS3
Связанные уязвимости
The source-address critical option in the Permissions returned by an authentication callback was only enforced for the PublicKeyCallback and VerifiedPublicKeyCallback paths, extending the fix for CVE-2026-46595. Permissions returned by the PasswordCallback, KeyboardInteractiveCallback, NoClientAuthCallback, and GSSAPIWithMICConfig.AllowLogin callbacks were not validated against the client's remote address, so a source-address restriction set by those callbacks was silently ignored. The check is now applied to the Permissions returned by any authentication callback.
The source-address critical option in the Permissions returned by an authentication callback was only enforced for the PublicKeyCallback and VerifiedPublicKeyCallback paths, extending the fix for CVE-2026-46595. Permissions returned by the PasswordCallback, KeyboardInteractiveCallback, NoClientAuthCallback, and GSSAPIWithMICConfig.AllowLogin callbacks were not validated against the client's remote address, so a source-address restriction set by those callbacks was silently ignored. The check is now applied to the Permissions returned by any authentication callback.
The source-address critical option in the Permissions returned by an a ...
The source-address critical option in the Permissions returned by an authentication callback was only enforced for the PublicKeyCallback and VerifiedPublicKeyCallback paths, extending the fix for CVE-2026-46595. Permissions returned by the PasswordCallback, KeyboardInteractiveCallback, NoClientAuthCallback, and GSSAPIWithMICConfig.AllowLogin callbacks were not validated against the client's remote address, so a source-address restriction set by those callbacks was silently ignored. The check is now applied to the Permissions returned by any authentication callback.
EPSS
9.1 Critical
CVSS3