{ "document": { "aggregate_severity": { "namespace": "https://access.redhat.com/security/updates/classification/", "text": "Important" }, "category": "csaf_security_advisory", "csaf_version": "2.0", "distribution": { "text": "Copyright © Red Hat, Inc. All rights reserved.", "tlp": { "label": "WHITE", "url": "https://www.first.org/tlp/" } }, "lang": "en", "notes": [ { "category": "summary", "text": "Red Hat OpenShift Container Platform release 4.7.19 is now available with\nupdates to packages and images that fix several bugs and add enhancements.\n\nThis release includes a security update for Red Hat OpenShift Container Platform 4.7.\n\nRed 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.", "title": "Topic" }, { "category": "general", "text": "Red Hat OpenShift Container Platform is Red Hat's cloud computing\nKubernetes application platform solution designed for on-premise or private\ncloud deployments.\n\nThis advisory contains the RPM packages for Red Hat OpenShift Container Platform 4.7.19. See the following advisory for the container images for this release:\n\nhttps://access.redhat.com/errata/RHSA-2021:2554\n\nSecurity Fix(es):\n\n* polkit: local privilege escalation using polkit_system_bus_name_get_creds_sync() (CVE-2021-3560)\n\n* dhcp: stack-based buffer overflow when parsing statements with colon-separated hex digits in config or lease files in dhcpd and dhclient (CVE-2021-25217)\n\nFor 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.\n\nAll OpenShift Container Platform 4.7 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 Console or the CLI oc command. Instructions for upgrading a cluster are available at https://docs.openshift.com/container-platform/4.7/updating/updating-cluster-between-minor.html#understanding-upgrade-channels_updating-cluster-between-minor", "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-2021:2555", "url": "https://access.redhat.com/errata/RHSA-2021:2555" }, { "category": "external", "summary": "https://access.redhat.com/security/updates/classification/#important", "url": "https://access.redhat.com/security/updates/classification/#important" }, { "category": "external", "summary": "1961710", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=1961710" }, { "category": "external", "summary": "1963258", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=1963258" }, { "category": "external", "summary": "1976688", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=1976688" }, { "category": "self", "summary": "Canonical URL", "url": "https://security.access.redhat.com/data/csaf/v2/advisories/2021/rhsa-2021_2555.json" } ], "title": "Red Hat Security Advisory: OpenShift Container Platform 4.7.19 packages and security update", "tracking": { "current_release_date": "2026-06-28T12:34:36+00:00", "generator": { "date": "2026-06-28T12:34:36+00:00", "engine": { "name": "Red Hat SDEngine", "version": "5.2.6" } }, "id": "RHSA-2021:2555", "initial_release_date": "2021-07-06T11:31:17+00:00", "revision_history": [ { "date": "2021-07-06T11:31:17+00:00", "number": "1", "summary": "Initial version" }, { "date": "2021-07-06T11:31:17+00:00", "number": "2", "summary": "Last updated version" }, { "date": "2026-06-28T12:34:36+00:00", "number": "3", "summary": "Last generated version" } ], "status": "final", 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This flaw could be used by an unprivileged local attacker to, for example, create a new local administrator. The highest threat from this vulnerability is to data confidentiality and integrity as well as system availability.", "title": "Vulnerability description" }, { "category": "summary", "text": "polkit: local privilege escalation using polkit_system_bus_name_get_creds_sync()", "title": "Vulnerability summary" }, { "category": "general", "text": "The CVSS score(s) listed for this vulnerability do not reflect the associated product's status, and are included for informational purposes to better understand the severity of this vulnerability.", "title": "CVSS score applicability" } ], "product_status": { "fixed": [ "7Server-RH7-RHOSE-4.7:cri-o-0:1.20.3-6.rhaos4.7.git0d0f863.el7.src", "7Server-RH7-RHOSE-4.7:cri-o-0:1.20.3-6.rhaos4.7.git0d0f863.el7.x86_64", "7Server-RH7-RHOSE-4.7:cri-o-debuginfo-0:1.20.3-6.rhaos4.7.git0d0f863.el7.x86_64", "7Server-RH7-RHOSE-4.7:openshift-clients-0:4.7.0-202106252127.p0.git.8b4b094.el7.src", 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"Important" } ], "title": "polkit: local privilege escalation using polkit_system_bus_name_get_creds_sync()" }, { "cve": "CVE-2021-25217", "cwe": { "id": "CWE-119", "name": "Improper Restriction of Operations within the Bounds of a Memory Buffer" }, "discovery_date": "2021-05-21T00:00:00+00:00", "ids": [ { "system_name": "Red Hat Bugzilla ID", "text": "1963258" } ], "notes": [ { "category": "description", "text": "A flaw was found in the Dynamic Host Configuration Protocol (DHCP). There is a discrepancy between the code that handles encapsulated option information in leases transmitted \"on the wire\" and the code which reads and parses lease information after it has been written to disk storage. This flaw allows an attacker to deliberately cause a situation where dhcpd while running in DHCPv4 or DHCPv6 mode, or the dhclient attempts to read a stored lease that contains option information, to trigger a stack-based buffer overflow in the option parsing code for colon-separated hex digits values. The highest threat from this vulnerability is to data confidentiality and integrity as well as service availability.", "title": "Vulnerability description" }, { "category": "summary", "text": "dhcp: stack-based buffer overflow when parsing statements with colon-separated hex digits in config or lease files in dhcpd and dhclient", "title": "Vulnerability summary" }, { "category": "other", "text": "To abuse this flaw an attacker has to be on the same local sub-net of the victim machine. An attacker may send crafted DHCP messages with long lease statements that, when stored locally on file and then re-read by dhclient or dhcpd, might trigger the bug.", "title": "Statement" }, { "category": "general", "text": "The CVSS score(s) listed for this vulnerability do not reflect the associated product's status, and are included for informational purposes to better understand the severity of this vulnerability.", "title": "CVSS score applicability" } ], "product_status": { "fixed": [ "7Server-RH7-RHOSE-4.7:cri-o-0:1.20.3-6.rhaos4.7.git0d0f863.el7.src", "7Server-RH7-RHOSE-4.7:cri-o-0:1.20.3-6.rhaos4.7.git0d0f863.el7.x86_64", "7Server-RH7-RHOSE-4.7:cri-o-debuginfo-0:1.20.3-6.rhaos4.7.git0d0f863.el7.x86_64", "7Server-RH7-RHOSE-4.7:openshift-clients-0:4.7.0-202106252127.p0.git.8b4b094.el7.src", "7Server-RH7-RHOSE-4.7:openshift-clients-0:4.7.0-202106252127.p0.git.8b4b094.el7.x86_64", 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"8Base-RHOSE-4.7:openshift-kuryr-0:4.7.0-202106232224.p0.git.c7654fb.el8.src", "8Base-RHOSE-4.7:openshift-kuryr-cni-0:4.7.0-202106232224.p0.git.c7654fb.el8.noarch", "8Base-RHOSE-4.7:openshift-kuryr-common-0:4.7.0-202106232224.p0.git.c7654fb.el8.noarch", "8Base-RHOSE-4.7:openshift-kuryr-controller-0:4.7.0-202106232224.p0.git.c7654fb.el8.noarch", "8Base-RHOSE-4.7:polkit-0:0.115-11.el8_3.2.src", "8Base-RHOSE-4.7:polkit-0:0.115-11.el8_3.2.x86_64", "8Base-RHOSE-4.7:polkit-debuginfo-0:0.115-11.el8_3.2.x86_64", "8Base-RHOSE-4.7:polkit-debugsource-0:0.115-11.el8_3.2.x86_64", "8Base-RHOSE-4.7:polkit-libs-0:0.115-11.el8_3.2.x86_64", "8Base-RHOSE-4.7:polkit-libs-debuginfo-0:0.115-11.el8_3.2.x86_64", "8Base-RHOSE-4.7:python3-kuryr-kubernetes-0:4.7.0-202106232224.p0.git.c7654fb.el8.noarch" ] }, "references": [ { "category": "self", "summary": "Canonical URL", "url": "https://access.redhat.com/security/cve/CVE-2021-25217" }, { "category": "external", "summary": "RHBZ#1963258", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=1963258" }, { "category": "external", "summary": "https://www.cve.org/CVERecord?id=CVE-2021-25217", "url": "https://www.cve.org/CVERecord?id=CVE-2021-25217" }, { "category": "external", "summary": "https://nvd.nist.gov/vuln/detail/CVE-2021-25217", "url": "https://nvd.nist.gov/vuln/detail/CVE-2021-25217" }, { "category": "external", "summary": "https://kb.isc.org/docs/cve-2021-25217", "url": "https://kb.isc.org/docs/cve-2021-25217" } ], "release_date": "2021-05-26T00:00:00+00:00", "remediations": [ { "category": "vendor_fix", "date": "2021-07-06T11:31:17+00:00", "details": "For OpenShift Container Platform 4.7 see the following documentation, which\nwill be updated shortly for this release, for important instructions on how\nto upgrade your cluster and fully apply this asynchronous errata update:\n\nhttps://docs.openshift.com/container-platform/4.7/release_notes/ocp-4-7-release-notes.html\n\nDetails on how to access this content are available at\nhttps://docs.openshift.com/container-platform/4.7/updating/updating-cluster-cli.html", "product_ids": [ "7Server-RH7-RHOSE-4.7:cri-o-0:1.20.3-6.rhaos4.7.git0d0f863.el7.src", "7Server-RH7-RHOSE-4.7:cri-o-0:1.20.3-6.rhaos4.7.git0d0f863.el7.x86_64", "7Server-RH7-RHOSE-4.7:cri-o-debuginfo-0:1.20.3-6.rhaos4.7.git0d0f863.el7.x86_64", "7Server-RH7-RHOSE-4.7:openshift-clients-0:4.7.0-202106252127.p0.git.8b4b094.el7.src", "7Server-RH7-RHOSE-4.7:openshift-clients-0:4.7.0-202106252127.p0.git.8b4b094.el7.x86_64", "7Server-RH7-RHOSE-4.7:openshift-clients-redistributable-0:4.7.0-202106252127.p0.git.8b4b094.el7.x86_64", "8Base-RHOSE-4.7:cri-o-0:1.20.3-6.rhaos4.7.git0d0f863.el8.ppc64le", "8Base-RHOSE-4.7:cri-o-0:1.20.3-6.rhaos4.7.git0d0f863.el8.s390x", "8Base-RHOSE-4.7:cri-o-0:1.20.3-6.rhaos4.7.git0d0f863.el8.src", "8Base-RHOSE-4.7:cri-o-0:1.20.3-6.rhaos4.7.git0d0f863.el8.x86_64", "8Base-RHOSE-4.7:cri-o-debuginfo-0:1.20.3-6.rhaos4.7.git0d0f863.el8.ppc64le", 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"8Base-RHOSE-4.7:polkit-debuginfo-0:0.115-11.el8_3.2.x86_64", "8Base-RHOSE-4.7:polkit-debugsource-0:0.115-11.el8_3.2.x86_64", "8Base-RHOSE-4.7:polkit-libs-0:0.115-11.el8_3.2.x86_64", "8Base-RHOSE-4.7:polkit-libs-debuginfo-0:0.115-11.el8_3.2.x86_64", "8Base-RHOSE-4.7:python3-kuryr-kubernetes-0:4.7.0-202106232224.p0.git.c7654fb.el8.noarch" ], "restart_required": { "category": "none" }, "url": "https://access.redhat.com/errata/RHSA-2021:2555" } ], "scores": [ { "cvss_v3": { "attackComplexity": "LOW", "attackVector": "ADJACENT_NETWORK", "availabilityImpact": "HIGH", "baseScore": 8.8, "baseSeverity": "HIGH", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "privilegesRequired": "NONE", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H", "version": "3.1" }, "products": [ "7Server-RH7-RHOSE-4.7:cri-o-0:1.20.3-6.rhaos4.7.git0d0f863.el7.src", "7Server-RH7-RHOSE-4.7:cri-o-0:1.20.3-6.rhaos4.7.git0d0f863.el7.x86_64", 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"8Base-RHOSE-4.7:python3-kuryr-kubernetes-0:4.7.0-202106232224.p0.git.c7654fb.el8.noarch" ] } ], "threats": [ { "category": "impact", "details": "Important" } ], "title": "dhcp: stack-based buffer overflow when parsing statements with colon-separated hex digits in config or lease files in dhcpd and dhclient" } ] }