RHSA-2025:22265

Vulnerability from csaf_redhat - Published: 2025-12-03 10:35 - Updated: 2025-12-04 10:45
Summary
Red Hat Security Advisory: OpenShift Container Platform 4.17.45 bug fix and security update

Notes

Topic
Red Hat OpenShift Container Platform release 4.17.45 is now available with updates to packages and images that fix several bugs and add enhancements. This release includes a security update for Red Hat OpenShift Container Platform 4.17. Red Hat Product Security has rated this update as having a security impact of Important. A Common Vulnerability Scoring System (CVSS) base score, which gives a detailed severity rating, is available for each vulnerability from the CVE link(s) in the References section.
Details
Red Hat OpenShift Container Platform is Red Hat's cloud computing Kubernetes application platform solution designed for on-premise or private cloud deployments. This advisory contains the container images for Red Hat OpenShift Container Platform 4.17.45. See the following advisory for the RPM packages for this release: https://access.redhat.com/errata/156642 Space precludes documenting all of the container images in this advisory. See the following Release Notes documentation, which will be updated shortly for this release, for details about these changes: https://docs.redhat.com/en/documentation/openshift_container_platform/4.17/html/release_notes/ Security Fix(es): * sssd: SSSD default Kerberos configuration allows privilege escalation on AD-joined Linux systems (CVE-2025-11561) * podman: Build Context Bind Mount (CVE-2025-4953) For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section. All OpenShift Container Platform 4.17 users are advised to upgrade to these updated packages and images when they are available in the appropriate release channel. To check for available updates, use the OpenShift CLI (oc) or web console. Instructions for upgrading a cluster are available at https://docs.redhat.com/en/documentation/openshift_container_platform/4.17/html-single/updating_clusters/index#updating-cluster-cli.
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.
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        "name": "Creation of Temporary File With Insecure Permissions"
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      "discovery_date": "2025-05-19T11:46:53.335000+00:00",
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          "category": "description",
          "text": "A flaw was found in Podman. In a Containerfile or Podman, data written to RUN --mount=type=bind mounts during the podman build is not discarded. This issue can lead to files created within the container appearing in the temporary build context directory on the host, leaving the created files accessible.",
          "title": "Vulnerability description"
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          "text": "podman: Build Context Bind Mount",
          "title": "Vulnerability summary"
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          "text": "This issue is classified as Moderate rather than Important because exploitation requires several preconditions: an attacker must have unprivileged access to the host during the build process, the container build must include long-running steps (e.g., RUN sleep) that prolong the existence of the temporary build context, and files must be created with overly permissive permissions (e.g., 4777). The vulnerability does not allow remote code execution or compromise of running containers, and it only exposes files temporarily present in the build context. Therefore, while it can lead to information disclosure, the scope and impact are limited to local users with concurrent access, making the overall risk moderate.",
          "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.",
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        }
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      "release_date": "2025-09-16T00:00:00+00:00",
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          "category": "vendor_fix",
          "date": "2025-12-03T10:35:45+00:00",
          "details": "For OpenShift Container Platform 4.17 see the following documentation, which will be updated shortly for this release, for important instructions on how to upgrade your cluster and fully apply this asynchronous errata update:\n\nhttps://docs.redhat.com/en/documentation/openshift_container_platform/4.17/html/release_notes/\n\nYou may download the oc tool and use it to inspect release image metadata for x86_64, s390x, ppc64le, and aarch64 architectures. The image digests may be found at https://quay.io/repository/openshift-release-dev/ocp-release?tab=tags.\n\nThe sha values for the release are as follows:\n\n      (For x86_64 architecture)\n      The image digest is sha256:4f7b8774832b0928a98ffc519637a6e1e4fe085754a0e9d240104993f7ce940b\n\n      (For s390x architecture)\n      The image digest is sha256:fe6abf197b86cae6a7346a8564efb809d5192341ae1c63fd0a07980399b69173\n\n      (For ppc64le architecture)\n      The image digest is sha256:eb371d1bef44af03c7bb53e5ee994e02e88129814331d2d1cfe5d1a207389510\n\n      (For aarch64 architecture)\n      The image digest is sha256:bc53841307c98fb7b0585d708835311253396a20900a533d6b34800d1587d561\n\nAll OpenShift Container Platform 4.17 users are advised to upgrade to these updated packages and images when they are available in the appropriate release channel. To check for available updates, use the OpenShift CLI (oc) or web console. Instructions for upgrading a cluster are available at https://docs.redhat.com/en/documentation/openshift_container_platform/4.17/html-single/updating_clusters/index#updating-cluster-cli.",
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            "attackComplexity": "HIGH",
            "attackVector": "NETWORK",
            "availabilityImpact": "NONE",
            "baseScore": 7.4,
            "baseSeverity": "HIGH",
            "confidentialityImpact": "HIGH",
            "integrityImpact": "HIGH",
            "privilegesRequired": "NONE",
            "scope": "UNCHANGED",
            "userInteraction": "NONE",
            "vectorString": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N",
            "version": "3.1"
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            "9Base-RHOSE-4.17:rhcos-x86_64-417.94.202511260612-0"
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        }
      ],
      "threats": [
        {
          "category": "impact",
          "details": "Moderate"
        }
      ],
      "title": "podman: Build Context Bind Mount"
    },
    {
      "acknowledgments": [
        {
          "names": [
            "Zavier Lee"
          ]
        }
      ],
      "cve": "CVE-2025-11561",
      "cwe": {
        "id": "CWE-269",
        "name": "Improper Privilege Management"
      },
      "discovery_date": "2025-10-09T12:57:29.851000+00:00",
      "ids": [
        {
          "system_name": "Red Hat Bugzilla ID",
          "text": "2402727"
        }
      ],
      "notes": [
        {
          "category": "description",
          "text": "A flaw was found in the integration of Active Directory and the System Security Services Daemon (SSSD) on Linux systems. In default configurations, the Kerberos local authentication plugin (sssd_krb5_localauth_plugin) is enabled, but a fallback to the an2ln plugin is possible. This fallback allows an attacker with permission to modify certain AD attributes (such as userPrincipalName or samAccountName) to impersonate privileged users, potentially resulting in unauthorized access or privilege escalation on domain-joined Linux hosts.",
          "title": "Vulnerability description"
        },
        {
          "category": "summary",
          "text": "sssd: SSSD default Kerberos configuration allows privilege escalation on AD-joined Linux systems",
          "title": "Vulnerability summary"
        },
        {
          "category": "other",
          "text": "The Red Hat Product Security team has assessed this issue as High severity for domain-joined Linux systems using default SSSD configurations. While the Kerberos local authentication plugin (sssd_krb5_localauth_plugin) is enabled by default, fallback to the an2ln plugin can occur, allowing a domain user who can modify certain Active Directory attributes (such as userPrincipalName or samAccountName) to map to privileged local accounts. This could lead to unauthorized access or elevated privileges on affected Linux hosts. Administrators are advised to review and apply recommended hardening configurations to mitigate this behavior.",
          "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"
        }
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          "url": "https://access.redhat.com/security/cve/CVE-2025-11561"
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          "summary": "https://nvd.nist.gov/vuln/detail/CVE-2025-11561",
          "url": "https://nvd.nist.gov/vuln/detail/CVE-2025-11561"
        },
        {
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          "summary": "https://blog.async.sg/kerberos-ldr",
          "url": "https://blog.async.sg/kerberos-ldr"
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          "category": "vendor_fix",
          "date": "2025-12-03T10:35:45+00:00",
          "details": "For OpenShift Container Platform 4.17 see the following documentation, which will be updated shortly for this release, for important instructions on how to upgrade your cluster and fully apply this asynchronous errata update:\n\nhttps://docs.redhat.com/en/documentation/openshift_container_platform/4.17/html/release_notes/\n\nYou may download the oc tool and use it to inspect release image metadata for x86_64, s390x, ppc64le, and aarch64 architectures. The image digests may be found at https://quay.io/repository/openshift-release-dev/ocp-release?tab=tags.\n\nThe sha values for the release are as follows:\n\n      (For x86_64 architecture)\n      The image digest is sha256:4f7b8774832b0928a98ffc519637a6e1e4fe085754a0e9d240104993f7ce940b\n\n      (For s390x architecture)\n      The image digest is sha256:fe6abf197b86cae6a7346a8564efb809d5192341ae1c63fd0a07980399b69173\n\n      (For ppc64le architecture)\n      The image digest is sha256:eb371d1bef44af03c7bb53e5ee994e02e88129814331d2d1cfe5d1a207389510\n\n      (For aarch64 architecture)\n      The image digest is sha256:bc53841307c98fb7b0585d708835311253396a20900a533d6b34800d1587d561\n\nAll OpenShift Container Platform 4.17 users are advised to upgrade to these updated packages and images when they are available in the appropriate release channel. To check for available updates, use the OpenShift CLI (oc) or web console. Instructions for upgrading a cluster are available at https://docs.redhat.com/en/documentation/openshift_container_platform/4.17/html-single/updating_clusters/index#updating-cluster-cli.",
          "product_ids": [
            "9Base-RHOSE-4.17:rhcos-aarch64-417.94.202511260612-0",
            "9Base-RHOSE-4.17:rhcos-ppc64le-417.94.202511260612-0",
            "9Base-RHOSE-4.17:rhcos-s390x-417.94.202511260612-0",
            "9Base-RHOSE-4.17:rhcos-x86_64-417.94.202511260612-0"
          ],
          "restart_required": {
            "category": "none"
          },
          "url": "https://access.redhat.com/errata/RHSA-2025:22265"
        },
        {
          "category": "workaround",
          "details": "To mitigate this issue, ensure the SSSD Kerberos local authentication plugin (sssd_krb5_localauth_plugin) is configured and the an2ln plugin is disabled by adding \"disable = an2ln\" in a krb5 include file, for example /var/lib/sss/pubconf/krb5.include.d/localauth_plugin and make sure it is included in the Kerberos configuration. Apply vendor updates and follow Red Hat guidance for SSSD hardening.",
          "product_ids": [
            "9Base-RHOSE-4.17:rhcos-aarch64-417.94.202511260612-0",
            "9Base-RHOSE-4.17:rhcos-ppc64le-417.94.202511260612-0",
            "9Base-RHOSE-4.17:rhcos-s390x-417.94.202511260612-0",
            "9Base-RHOSE-4.17:rhcos-x86_64-417.94.202511260612-0"
          ]
        }
      ],
      "scores": [
        {
          "cvss_v3": {
            "attackComplexity": "LOW",
            "attackVector": "NETWORK",
            "availabilityImpact": "HIGH",
            "baseScore": 8.8,
            "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:H",
            "version": "3.1"
          },
          "products": [
            "9Base-RHOSE-4.17:rhcos-aarch64-417.94.202511260612-0",
            "9Base-RHOSE-4.17:rhcos-ppc64le-417.94.202511260612-0",
            "9Base-RHOSE-4.17:rhcos-s390x-417.94.202511260612-0",
            "9Base-RHOSE-4.17:rhcos-x86_64-417.94.202511260612-0"
          ]
        }
      ],
      "threats": [
        {
          "category": "impact",
          "details": "Important"
        }
      ],
      "title": "sssd: SSSD default Kerberos configuration allows privilege escalation on AD-joined Linux systems"
    }
  ]
}


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Sightings

Author Source Type Date

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.



Detection rules are retrieved from Rulezet.