RHSA-2026:0316

Vulnerability from csaf_redhat - Published: 2026-01-15 05:12 - Updated: 2026-01-15 10:28
Summary
Red Hat Security Advisory: OpenShift Container Platform 4.12.84 bug fix and security update

Notes

Topic
Red Hat OpenShift Container Platform release 4.12.84 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 4.12. Red Hat Product Security has rated this update as having a security impact of Low. 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 4.12.84. See the following advisory for the RPM packages for this release: https://access.redhat.com/errata/157795 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/4.12/html/release_notes Security Fix(es): None 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 4.12 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/4.12/html-single/updating_clusters/index#updating-cluster-within-minor.
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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        "text": "Red Hat OpenShift Container Platform release 4.12.84 is now available with updates to packages and images that fix several bugs and add enhancements.\n\nThis release includes a security update for Red Hat OpenShift Container Platform 4.12.\n\nRed Hat Product Security has rated this update as having a security impact of Low. 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.",
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      "cwe": {
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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",
      "ids": [
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          "text": "2367235"
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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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        {
          "category": "summary",
          "text": "podman: Build Context Bind Mount",
          "title": "Vulnerability summary"
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        {
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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.",
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        {
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        {
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          "summary": "https://github.com/containers/podman/pull/25173",
          "url": "https://github.com/containers/podman/pull/25173"
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      ],
      "release_date": "2025-09-16T00:00:00+00:00",
      "remediations": [
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          "category": "vendor_fix",
          "date": "2026-01-15T05:12:28+00:00",
          "details": "For OpenShift Container Platform 4.12 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/4.12/html/release_notes\n\nYou may download the oc tool and use it to inspect release image metadata for the x86_64 architecture. The image digest may be found at https://quay.io/repository/openshift-release-dev/ocp-release?tab=tags.\n\n      The sha value for the release is as follows:\n\n      (For x86_64 architecture)\n      The image digest is sha256:9ea794d2dd24ff7377534edfb0447e5398a28919a84300cc79fe7bb8ae550d1b\n\nAll OpenShift Container Platform 4.12 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/4.12/html-single/updating_clusters/index#updating-cluster-within-minor.",
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          },
          "url": "https://access.redhat.com/errata/RHSA-2026:0316"
        },
        {
          "category": "workaround",
          "details": "Avoid long-running build steps and overly permissive file permissions. Use RUN --mount=type=secret for sensitive data instead of bind mounts.",
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            "attackVector": "NETWORK",
            "availabilityImpact": "NONE",
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            "confidentialityImpact": "HIGH",
            "integrityImpact": "HIGH",
            "privilegesRequired": "NONE",
            "scope": "UNCHANGED",
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        }
      ],
      "threats": [
        {
          "category": "impact",
          "details": "Moderate"
        }
      ],
      "title": "podman: Build Context Bind Mount"
    },
    {
      "cve": "CVE-2025-8677",
      "cwe": {
        "id": "CWE-400",
        "name": "Uncontrolled Resource Consumption"
      },
      "discovery_date": "2025-10-22T00:00:00+00:00",
      "ids": [
        {
          "system_name": "Red Hat Bugzilla ID",
          "text": "2405830"
        }
      ],
      "notes": [
        {
          "category": "description",
          "text": "A vulnerability was found in BIND 9 resolvers, where processing malformed DNSKEY records from a specially crafted zone can lead to resource exhaustion, primarily causing excessive CPU utilization. This issue enables a remote, unauthenticated attacker to degrade resolver performance and potentially cause a denial of service (DoS) for legitimate DNS clients.",
          "title": "Vulnerability description"
        },
        {
          "category": "summary",
          "text": "bind: Resource exhaustion via malformed DNSKEY handling",
          "title": "Vulnerability summary"
        },
        {
          "category": "other",
          "text": "This vulnerability is considered Important because it allows a remote, unauthenticated attacker to cause significant CPU exhaustion on vulnerable BIND resolvers by serving zones containing malformed DNSKEY records. The flaw triggers excessive computational effort during DNSKEY validation, leading to degraded performance and potential denial of service for legitimate clients. However, the issue affects availability only\u2014it does not enable code execution, data exposure, or privilege escalation\u2014so it is not classified as critical. Furthermore, authoritative servers are not impacted, limiting the scope of exposure to recursive resolvers. While the attack is easy to launch and can disrupt DNS operations, its effect ceases once the malicious traffic stops, making prompt patching and recursive access control effective mitigations.",
          "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": {
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      },
      "references": [
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          "category": "self",
          "summary": "Canonical URL",
          "url": "https://access.redhat.com/security/cve/CVE-2025-8677"
        },
        {
          "category": "external",
          "summary": "RHBZ#2405830",
          "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2405830"
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          "summary": "https://www.cve.org/CVERecord?id=CVE-2025-8677",
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        }
      ],
      "release_date": "2025-10-22T00:00:00+00:00",
      "remediations": [
        {
          "category": "vendor_fix",
          "date": "2026-01-15T05:12:28+00:00",
          "details": "For OpenShift Container Platform 4.12 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/4.12/html/release_notes\n\nYou may download the oc tool and use it to inspect release image metadata for the x86_64 architecture. The image digest may be found at https://quay.io/repository/openshift-release-dev/ocp-release?tab=tags.\n\n      The sha value for the release is as follows:\n\n      (For x86_64 architecture)\n      The image digest is sha256:9ea794d2dd24ff7377534edfb0447e5398a28919a84300cc79fe7bb8ae550d1b\n\nAll OpenShift Container Platform 4.12 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/4.12/html-single/updating_clusters/index#updating-cluster-within-minor.",
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        {
          "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.\n\nTo reduce risk, restrict recursive queries to trusted or internal networks only, and apply rate limiting or firewall rules to prevent excessive or repetitive requests. Enabling DNSSEC validation helps reject forged records, while isolating recursive resolvers from authoritative servers limits the impact of potential cache poisoning. Active monitoring of CPU usage, query volume, and cache anomalies can provide early warning of abuse or attacks.",
          "product_ids": [
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      "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": [
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          ]
        }
      ],
      "threats": [
        {
          "category": "impact",
          "details": "Important"
        }
      ],
      "title": "bind: Resource exhaustion via malformed DNSKEY handling"
    },
    {
      "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"
        }
      ],
      "product_status": {
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      "references": [
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          "category": "self",
          "summary": "Canonical URL",
          "url": "https://access.redhat.com/security/cve/CVE-2025-11561"
        },
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          "summary": "RHBZ#2402727",
          "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2402727"
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          "summary": "https://www.cve.org/CVERecord?id=CVE-2025-11561",
          "url": "https://www.cve.org/CVERecord?id=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",
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          "category": "vendor_fix",
          "date": "2026-01-15T05:12:28+00:00",
          "details": "For OpenShift Container Platform 4.12 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/4.12/html/release_notes\n\nYou may download the oc tool and use it to inspect release image metadata for the x86_64 architecture. The image digest may be found at https://quay.io/repository/openshift-release-dev/ocp-release?tab=tags.\n\n      The sha value for the release is as follows:\n\n      (For x86_64 architecture)\n      The image digest is sha256:9ea794d2dd24ff7377534edfb0447e5398a28919a84300cc79fe7bb8ae550d1b\n\nAll OpenShift Container Platform 4.12 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/4.12/html-single/updating_clusters/index#updating-cluster-within-minor.",
          "product_ids": [
            "8Base-RHOSE-4.12:rhcos-x86_64-412.86.202601061735-0"
          ],
          "restart_required": {
            "category": "none"
          },
          "url": "https://access.redhat.com/errata/RHSA-2026:0316"
        },
        {
          "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": [
            "8Base-RHOSE-4.12:rhcos-x86_64-412.86.202601061735-0"
          ]
        }
      ],
      "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": [
            "8Base-RHOSE-4.12:rhcos-x86_64-412.86.202601061735-0"
          ]
        }
      ],
      "threats": [
        {
          "category": "impact",
          "details": "Important"
        }
      ],
      "title": "sssd: SSSD default Kerberos configuration allows privilege escalation on AD-joined Linux systems"
    },
    {
      "cve": "CVE-2025-40778",
      "cwe": {
        "id": "CWE-347",
        "name": "Improper Verification of Cryptographic Signature"
      },
      "discovery_date": "2025-10-22T15:07:23.729000+00:00",
      "ids": [
        {
          "system_name": "Red Hat Bugzilla ID",
          "text": "2405827"
        }
      ],
      "notes": [
        {
          "category": "description",
          "text": "A vulnerability exists in BIND\u2019s DNS resolver logic that makes it overly permissive when accepting resource records (RRs) in responses. Under certain conditions, this flaw allows attackers to inject unsolicited or forged DNS records into the cache. This can be exploited to poison the resolver cache, redirecting clients to malicious domains or unauthorized servers.",
          "title": "Vulnerability description"
        },
        {
          "category": "summary",
          "text": "bind: Cache poisoning attacks with unsolicited RRs",
          "title": "Vulnerability summary"
        },
        {
          "category": "other",
          "text": "It is classified as Important rather than Critical because its impact is limited to cache poisoning within recursive resolvers and does not allow direct code execution, privilege escalation, or service disruption. The vulnerability affects the accuracy of DNS responses, but not the availability or confidentiality of systems. Additionally, DNSSEC-enabled deployments and restricted recursive access can significantly mitigate exploitation risks. Therefore, while the flaw can misdirect network traffic and compromise trust in name resolution, it does not directly compromise the underlying server or client systems, justifying an Important \u2014 but not Critical \u2014 severity rating.\n\nTechnical Analysis:\nThe issue arises because BIND fails to strictly validate unsolicited resource records accompanying legitimate DNS responses. This gap allows forged recursive resolvers to be cached as valid entries. Since the attack is remote, requires no authentication, and exploits a low-complexity vector, it is highly impactful in recursive resolver environments\u2014especially those exposed to untrusted clients or open resolvers.",
          "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": [
          "8Base-RHOSE-4.12:rhcos-x86_64-412.86.202601061735-0"
        ]
      },
      "references": [
        {
          "category": "self",
          "summary": "Canonical URL",
          "url": "https://access.redhat.com/security/cve/CVE-2025-40778"
        },
        {
          "category": "external",
          "summary": "RHBZ#2405827",
          "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2405827"
        },
        {
          "category": "external",
          "summary": "https://www.cve.org/CVERecord?id=CVE-2025-40778",
          "url": "https://www.cve.org/CVERecord?id=CVE-2025-40778"
        },
        {
          "category": "external",
          "summary": "https://nvd.nist.gov/vuln/detail/CVE-2025-40778",
          "url": "https://nvd.nist.gov/vuln/detail/CVE-2025-40778"
        }
      ],
      "release_date": "2025-10-22T00:00:00+00:00",
      "remediations": [
        {
          "category": "vendor_fix",
          "date": "2026-01-15T05:12:28+00:00",
          "details": "For OpenShift Container Platform 4.12 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/4.12/html/release_notes\n\nYou may download the oc tool and use it to inspect release image metadata for the x86_64 architecture. The image digest may be found at https://quay.io/repository/openshift-release-dev/ocp-release?tab=tags.\n\n      The sha value for the release is as follows:\n\n      (For x86_64 architecture)\n      The image digest is sha256:9ea794d2dd24ff7377534edfb0447e5398a28919a84300cc79fe7bb8ae550d1b\n\nAll OpenShift Container Platform 4.12 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/4.12/html-single/updating_clusters/index#updating-cluster-within-minor.",
          "product_ids": [
            "8Base-RHOSE-4.12:rhcos-x86_64-412.86.202601061735-0"
          ],
          "restart_required": {
            "category": "none"
          },
          "url": "https://access.redhat.com/errata/RHSA-2026:0316"
        },
        {
          "category": "workaround",
          "details": "While it is not possible to eliminate risk from this vulnerability, there are several options for reducing the risk. These include restricting recursive queries to trusted or internal networks only, and apply rate limiting or firewall rules to prevent excessive or repetitive requests. Enabling DNSSEC validation helps reject forged records, while isolating recursive resolvers from authoritative servers limits the impact of potential cache poisoning. Active monitoring of CPU usage, query volume, and cache anomalies can provide early warning of abuse or attacks.",
          "product_ids": [
            "8Base-RHOSE-4.12:rhcos-x86_64-412.86.202601061735-0"
          ]
        }
      ],
      "scores": [
        {
          "cvss_v3": {
            "attackComplexity": "LOW",
            "attackVector": "NETWORK",
            "availabilityImpact": "NONE",
            "baseScore": 8.6,
            "baseSeverity": "HIGH",
            "confidentialityImpact": "NONE",
            "integrityImpact": "HIGH",
            "privilegesRequired": "NONE",
            "scope": "CHANGED",
            "userInteraction": "NONE",
            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:H/A:N",
            "version": "3.1"
          },
          "products": [
            "8Base-RHOSE-4.12:rhcos-x86_64-412.86.202601061735-0"
          ]
        }
      ],
      "threats": [
        {
          "category": "impact",
          "details": "Important"
        }
      ],
      "title": "bind: Cache poisoning attacks with unsolicited RRs"
    },
    {
      "cve": "CVE-2025-40780",
      "cwe": {
        "id": "CWE-338",
        "name": "Use of Cryptographically Weak Pseudo-Random Number Generator (PRNG)"
      },
      "discovery_date": "2025-10-22T00:00:00+00:00",
      "ids": [
        {
          "system_name": "Red Hat Bugzilla ID",
          "text": "2405829"
        }
      ],
      "notes": [
        {
          "category": "description",
          "text": "A vulnerability was found in BIND resolvers caused by a weakness in the Pseudo Random Number Generator (PRNG). This weakness allows an attacker to potentially predict the source port and query ID used by BIND, enabling cache poisoning attacks. If successful, the attacker can inject malicious DNS responses into the resolver\u2019s cache, causing clients to receive spoofed DNS data. Authoritative servers are generally unaffected, but recursive resolvers are exposed to this risk. Exploitation is remote and does not require user interaction.",
          "title": "Vulnerability description"
        },
        {
          "category": "summary",
          "text": "bind: Cache poisoning due to weak PRNG",
          "title": "Vulnerability summary"
        },
        {
          "category": "other",
          "text": "This vulnerability in BIND 9 resolvers caused by a weakness in the Pseudo Random Number Generator (PRNG) used to select the UDP source port and DNS query (transaction) ID. Exploitation requires an attacker to correctly predict both values and race the legitimate authoritative response with a spoofed packet to perform cache poisoning. While the PRNG weakness reduces entropy and makes prediction feasible under certain conditions, this still requires precise timing, on-path or spoofing capabilities, and targeting of recursive resolvers.\n\nThe impact is limited to resolver cache integrity; it does not allow remote code execution, privilege escalation, or direct compromise of the BIND server itself. Authoritative servers are not affected. Additionally, operational mitigations such as DNSSEC validation, access control restricting recursion, and network-level packet filtering reduce real-world exploitability. No active exploits have been observed in the wild.\n\nBecause exploitation is non-trivial, requires network-level spoofing and precise timing, and only affects cache integrity without server compromise, the vulnerability is considered Important rather than Critical.",
          "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": [
          "8Base-RHOSE-4.12:rhcos-x86_64-412.86.202601061735-0"
        ]
      },
      "references": [
        {
          "category": "self",
          "summary": "Canonical URL",
          "url": "https://access.redhat.com/security/cve/CVE-2025-40780"
        },
        {
          "category": "external",
          "summary": "RHBZ#2405829",
          "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2405829"
        },
        {
          "category": "external",
          "summary": "https://www.cve.org/CVERecord?id=CVE-2025-40780",
          "url": "https://www.cve.org/CVERecord?id=CVE-2025-40780"
        },
        {
          "category": "external",
          "summary": "https://nvd.nist.gov/vuln/detail/CVE-2025-40780",
          "url": "https://nvd.nist.gov/vuln/detail/CVE-2025-40780"
        }
      ],
      "release_date": "2025-10-22T00:00:00+00:00",
      "remediations": [
        {
          "category": "vendor_fix",
          "date": "2026-01-15T05:12:28+00:00",
          "details": "For OpenShift Container Platform 4.12 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/4.12/html/release_notes\n\nYou may download the oc tool and use it to inspect release image metadata for the x86_64 architecture. The image digest may be found at https://quay.io/repository/openshift-release-dev/ocp-release?tab=tags.\n\n      The sha value for the release is as follows:\n\n      (For x86_64 architecture)\n      The image digest is sha256:9ea794d2dd24ff7377534edfb0447e5398a28919a84300cc79fe7bb8ae550d1b\n\nAll OpenShift Container Platform 4.12 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/4.12/html-single/updating_clusters/index#updating-cluster-within-minor.",
          "product_ids": [
            "8Base-RHOSE-4.12:rhcos-x86_64-412.86.202601061735-0"
          ],
          "restart_required": {
            "category": "none"
          },
          "url": "https://access.redhat.com/errata/RHSA-2026:0316"
        },
        {
          "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.\n\nTo reduce risk, restrict recursive queries to trusted or internal networks only, and apply rate limiting or firewall rules to prevent excessive or repetitive requests. Enabling DNSSEC validation helps reject forged records, while isolating recursive resolvers from authoritative servers limits the impact of potential cache poisoning. Active monitoring of CPU usage, query volume, and cache anomalies can provide early warning of abuse or attacks.",
          "product_ids": [
            "8Base-RHOSE-4.12:rhcos-x86_64-412.86.202601061735-0"
          ]
        }
      ],
      "scores": [
        {
          "cvss_v3": {
            "attackComplexity": "LOW",
            "attackVector": "NETWORK",
            "availabilityImpact": "NONE",
            "baseScore": 8.6,
            "baseSeverity": "HIGH",
            "confidentialityImpact": "NONE",
            "integrityImpact": "HIGH",
            "privilegesRequired": "NONE",
            "scope": "CHANGED",
            "userInteraction": "NONE",
            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:H/A:N",
            "version": "3.1"
          },
          "products": [
            "8Base-RHOSE-4.12:rhcos-x86_64-412.86.202601061735-0"
          ]
        }
      ],
      "threats": [
        {
          "category": "impact",
          "details": "Important"
        }
      ],
      "title": "bind: Cache poisoning due to weak PRNG"
    },
    {
      "cve": "CVE-2025-52881",
      "cwe": {
        "id": "CWE-59",
        "name": "Improper Link Resolution Before File Access (\u0027Link Following\u0027)"
      },
      "discovery_date": "2025-10-17T14:19:18.652000+00:00",
      "ids": [
        {
          "system_name": "Red Hat Bugzilla ID",
          "text": "2404715"
        }
      ],
      "notes": [
        {
          "category": "description",
          "text": "A flaw was found in runc. This attack is a more sophisticated variant of CVE-2019-16884, which was a flaw that allowed an attacker to trick runc into writing the LSM process labels for a container process into a dummy tmpfs file and thus not apply the correct LSM labels to the container process. The mitigation applied for CVE-2019-16884 was fairly limited and effectively only caused runc to verify that when we write LSM labels that those labels are actual procfs files.",
          "title": "Vulnerability description"
        },
        {
          "category": "summary",
          "text": "runc: opencontainers/selinux: container escape and denial of service due to arbitrary write gadgets and procfs write redirects",
          "title": "Vulnerability summary"
        },
        {
          "category": "other",
          "text": "Red Hat considers this as an Important flaw since the impact is limited to local attack with minimal privileges in order to jeopardize the environment.",
          "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": [
          "8Base-RHOSE-4.12:rhcos-x86_64-412.86.202601061735-0"
        ]
      },
      "references": [
        {
          "category": "self",
          "summary": "Canonical URL",
          "url": "https://access.redhat.com/security/cve/CVE-2025-52881"
        },
        {
          "category": "external",
          "summary": "RHBZ#2404715",
          "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2404715"
        },
        {
          "category": "external",
          "summary": "https://www.cve.org/CVERecord?id=CVE-2025-52881",
          "url": "https://www.cve.org/CVERecord?id=CVE-2025-52881"
        },
        {
          "category": "external",
          "summary": "https://nvd.nist.gov/vuln/detail/CVE-2025-52881",
          "url": "https://nvd.nist.gov/vuln/detail/CVE-2025-52881"
        },
        {
          "category": "external",
          "summary": "https://github.com/opencontainers/selinux/pull/237",
          "url": "https://github.com/opencontainers/selinux/pull/237"
        }
      ],
      "release_date": "2025-11-05T09:00:00+00:00",
      "remediations": [
        {
          "category": "vendor_fix",
          "date": "2026-01-15T05:12:28+00:00",
          "details": "For OpenShift Container Platform 4.12 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/4.12/html/release_notes\n\nYou may download the oc tool and use it to inspect release image metadata for the x86_64 architecture. The image digest may be found at https://quay.io/repository/openshift-release-dev/ocp-release?tab=tags.\n\n      The sha value for the release is as follows:\n\n      (For x86_64 architecture)\n      The image digest is sha256:9ea794d2dd24ff7377534edfb0447e5398a28919a84300cc79fe7bb8ae550d1b\n\nAll OpenShift Container Platform 4.12 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/4.12/html-single/updating_clusters/index#updating-cluster-within-minor.",
          "product_ids": [
            "8Base-RHOSE-4.12:rhcos-x86_64-412.86.202601061735-0"
          ],
          "restart_required": {
            "category": "none"
          },
          "url": "https://access.redhat.com/errata/RHSA-2026:0316"
        },
        {
          "category": "workaround",
          "details": "Potential mitigations for this issue include:\n\n* Using rootless containers, as doing so will block most of the inadvertent writes (runc would run with reduced privileges, making attempts to write to procfs files ineffective).\n* Based on our analysis, neither AppArmor or SELinux can protect against the full version of the redirected write attack. The container runtime is generally privileged enough to write to arbitrary procfs files, which is more than sufficient to cause a container breakout.",
          "product_ids": [
            "8Base-RHOSE-4.12:rhcos-x86_64-412.86.202601061735-0"
          ]
        }
      ],
      "scores": [
        {
          "cvss_v3": {
            "attackComplexity": "LOW",
            "attackVector": "LOCAL",
            "availabilityImpact": "HIGH",
            "baseScore": 8.2,
            "baseSeverity": "HIGH",
            "confidentialityImpact": "HIGH",
            "integrityImpact": "HIGH",
            "privilegesRequired": "LOW",
            "scope": "CHANGED",
            "userInteraction": "REQUIRED",
            "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:R/S:C/C:H/I:H/A:H",
            "version": "3.1"
          },
          "products": [
            "8Base-RHOSE-4.12:rhcos-x86_64-412.86.202601061735-0"
          ]
        }
      ],
      "threats": [
        {
          "category": "impact",
          "details": "Important"
        }
      ],
      "title": "runc: opencontainers/selinux: container escape and denial of service due to arbitrary write gadgets and procfs write redirects"
    },
    {
      "cve": "CVE-2025-59375",
      "cwe": {
        "id": "CWE-770",
        "name": "Allocation of Resources Without Limits or Throttling"
      },
      "discovery_date": "2025-09-15T03:00:59.775098+00:00",
      "ids": [
        {
          "system_name": "Red Hat Bugzilla ID",
          "text": "2395108"
        }
      ],
      "notes": [
        {
          "category": "description",
          "text": "A memory amplification vulnerability in libexpat allows attackers to trigger excessive dynamic memory allocations by submitting specially crafted XML input. A small input (~250 KiB) can cause the parser to allocate hundreds of megabytes, leading to denial-of-service (DoS) through memory exhaustion.",
          "title": "Vulnerability description"
        },
        {
          "category": "summary",
          "text": "expat: libexpat in Expat allows attackers to trigger large dynamic memory allocations via a small document that is submitted for parsing",
          "title": "Vulnerability summary"
        },
        {
          "category": "other",
          "text": "This issue is Important rather than Critical because, while it allows for significant resource exhaustion leading to denial-of-service (DoS), it does not enable arbitrary code execution, data leakage, or privilege escalation. The vulnerability stems from an uncontrolled memory amplification behavior in libexpat\u2019s parser, where a relatively small XML payload can cause disproportionately large heap allocations. However, the flaw is limited in scope to service disruption and requires the attacker to submit a crafted XML document\u2014something that can be mitigated with proper input validation and memory usage limits. Therefore, while the exploitability is high, the impact is confined to availability, not confidentiality or integrity, making it a high-severity but not critical flaw.\n\nIn Firefox and Thunderbird, where libexpat is a transitive userspace dependency, exploitation usually just crashes the application (app-level DoS), so it is classify as Moderate instead of Important.",
          "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": [
          "8Base-RHOSE-4.12:rhcos-x86_64-412.86.202601061735-0"
        ]
      },
      "references": [
        {
          "category": "self",
          "summary": "Canonical URL",
          "url": "https://access.redhat.com/security/cve/CVE-2025-59375"
        },
        {
          "category": "external",
          "summary": "RHBZ#2395108",
          "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2395108"
        },
        {
          "category": "external",
          "summary": "https://www.cve.org/CVERecord?id=CVE-2025-59375",
          "url": "https://www.cve.org/CVERecord?id=CVE-2025-59375"
        },
        {
          "category": "external",
          "summary": "https://nvd.nist.gov/vuln/detail/CVE-2025-59375",
          "url": "https://nvd.nist.gov/vuln/detail/CVE-2025-59375"
        },
        {
          "category": "external",
          "summary": "https://github.com/libexpat/libexpat/blob/676a4c531ec768732fac215da9730b5f50fbd2bf/expat/Changes#L45-L74",
          "url": "https://github.com/libexpat/libexpat/blob/676a4c531ec768732fac215da9730b5f50fbd2bf/expat/Changes#L45-L74"
        },
        {
          "category": "external",
          "summary": "https://github.com/libexpat/libexpat/issues/1018",
          "url": "https://github.com/libexpat/libexpat/issues/1018"
        },
        {
          "category": "external",
          "summary": "https://github.com/libexpat/libexpat/pull/1034",
          "url": "https://github.com/libexpat/libexpat/pull/1034"
        },
        {
          "category": "external",
          "summary": "https://issues.oss-fuzz.com/issues/439133977",
          "url": "https://issues.oss-fuzz.com/issues/439133977"
        }
      ],
      "release_date": "2025-09-15T00:00:00+00:00",
      "remediations": [
        {
          "category": "vendor_fix",
          "date": "2026-01-15T05:12:28+00:00",
          "details": "For OpenShift Container Platform 4.12 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/4.12/html/release_notes\n\nYou may download the oc tool and use it to inspect release image metadata for the x86_64 architecture. The image digest may be found at https://quay.io/repository/openshift-release-dev/ocp-release?tab=tags.\n\n      The sha value for the release is as follows:\n\n      (For x86_64 architecture)\n      The image digest is sha256:9ea794d2dd24ff7377534edfb0447e5398a28919a84300cc79fe7bb8ae550d1b\n\nAll OpenShift Container Platform 4.12 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/4.12/html-single/updating_clusters/index#updating-cluster-within-minor.",
          "product_ids": [
            "8Base-RHOSE-4.12:rhcos-x86_64-412.86.202601061735-0"
          ],
          "restart_required": {
            "category": "none"
          },
          "url": "https://access.redhat.com/errata/RHSA-2026:0316"
        },
        {
          "category": "workaround",
          "details": "To mitigate the issue, limit XML input size and complexity before parsing, and avoid accepting compressed or deeply nested XML. Use OS-level resource controls (like ulimit or setrlimit()) to cap memory usage, or run the parser in a sandboxed or isolated process with strict memory and CPU limits. This helps prevent denial-of-service by containing excessive resource consumption.",
          "product_ids": [
            "8Base-RHOSE-4.12:rhcos-x86_64-412.86.202601061735-0"
          ]
        }
      ],
      "scores": [
        {
          "cvss_v3": {
            "attackComplexity": "LOW",
            "attackVector": "NETWORK",
            "availabilityImpact": "LOW",
            "baseScore": 5.3,
            "baseSeverity": "MEDIUM",
            "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:L",
            "version": "3.1"
          },
          "products": [
            "8Base-RHOSE-4.12:rhcos-x86_64-412.86.202601061735-0"
          ]
        }
      ],
      "threats": [
        {
          "category": "impact",
          "details": "Important"
        }
      ],
      "title": "expat: libexpat in Expat allows attackers to trigger large dynamic memory allocations via a small document that is submitted for parsing"
    }
  ]
}


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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.