{ "document": { "aggregate_severity": { "text": "High" }, "category": "csaf_vex", "csaf_version": "2.0", "distribution": { "text": "TuxCare License Agreement", "tlp": { "label": "WHITE", "url": "https://www.first.org/tlp/" } }, "lang": "en", "notes": [ { "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 Cloud Linux Inc. and provide a link to the original.", "title": "Terms of Use" } ], "publisher": { "category": "vendor", "contact_details": "https://tuxcare.com/contact/", "name": "TuxCare", "namespace": "https://tuxcare.com/" }, "references": [ { "category": "self", "summary": "Canonical URL", "url": "https://security.tuxcare.com/csaf/v2/els_os/centos7els/vex/2025/cve-2025-61770-els_os-centos7els.json" } ], "tracking": { "current_release_date": "2026-10-23T09:04:24Z", "generator": { "date": "2026-10-23T09:04:24Z", "engine": { "name": "pyCSAF" } }, "id": "CVE-2025-61770-ELS_OS-CENTOS7ELS", "initial_release_date": "2025-10-07T15:16:00Z", "revision_history": [ { "date": "2025-10-07T15:16:00Z", "number": "1", "summary": "Initial version" }, { "date": "2026-10-23T09:04:24Z", "number": "2", "summary": "Official Publication" } ], "status": "final", "version": "2" }, "title": "Security update on CVE-2025-61770" }, "product_tree": { "branches": [ { "branches": [ { "branches": [ { "category": "product_name", "name": "Community Enterprise Operating System 7", "product": { "name": "Community Enterprise Operating System 7", "product_id": "CentOS-7", "product_identification_helper": { "cpe": "cpe:2.3:o:centos:centos:7:*:*:*:*:*:*:*" } } } ], "category": "product_family", "name": "Community Enterprise Operating System" } ], "category": "vendor", "name": "Red Hat, Inc." }, { "branches": [ { "branches": [ { "category": "product_version", "name": "pcs-snmp-0:0.9.169-3.0.1.el7_9.3.tuxcare.els1.aarch64", "product": { "name": "pcs-snmp-0:0.9.169-3.0.1.el7_9.3.tuxcare.els1.aarch64", "product_id": "pcs-snmp-0:0.9.169-3.0.1.el7_9.3.tuxcare.els1.aarch64", "product_identification_helper": { "purl": "pkg:rpm/tuxcare/pcs-snmp@0.9.169-3.0.1.el7_9.3.tuxcare.els1?arch=aarch64" } } }, { "category": "product_version", "name": "pcs-0:0.9.169-3.0.1.el7_9.3.tuxcare.els1.aarch64", "product": { "name": "pcs-0:0.9.169-3.0.1.el7_9.3.tuxcare.els1.aarch64", "product_id": "pcs-0:0.9.169-3.0.1.el7_9.3.tuxcare.els1.aarch64", "product_identification_helper": { "purl": "pkg:rpm/tuxcare/pcs@0.9.169-3.0.1.el7_9.3.tuxcare.els1?arch=aarch64" } } } ], "category": "architecture", "name": "aarch64" }, { "branches": [ { "category": "product_version", "name": "pcs-snmp-0:0.9.169-3.0.1.el7_9.3.tuxcare.els1.i686", "product": { "name": "pcs-snmp-0:0.9.169-3.0.1.el7_9.3.tuxcare.els1.i686", "product_id": "pcs-snmp-0:0.9.169-3.0.1.el7_9.3.tuxcare.els1.i686", "product_identification_helper": { "purl": "pkg:rpm/tuxcare/pcs-snmp@0.9.169-3.0.1.el7_9.3.tuxcare.els1?arch=i686" } } }, { "category": "product_version", "name": "pcs-0:0.9.169-3.0.1.el7_9.3.tuxcare.els1.i686", "product": { "name": "pcs-0:0.9.169-3.0.1.el7_9.3.tuxcare.els1.i686", "product_id": "pcs-0:0.9.169-3.0.1.el7_9.3.tuxcare.els1.i686", "product_identification_helper": { "purl": "pkg:rpm/tuxcare/pcs@0.9.169-3.0.1.el7_9.3.tuxcare.els1?arch=i686" } } } ], "category": "architecture", "name": "i686" }, { "branches": [ { "category": "product_version", "name": "pcs-snmp-0:0.9.169-3.0.1.el7_9.3.tuxcare.els1.x86_64", "product": { "name": "pcs-snmp-0:0.9.169-3.0.1.el7_9.3.tuxcare.els1.x86_64", "product_id": "pcs-snmp-0:0.9.169-3.0.1.el7_9.3.tuxcare.els1.x86_64", "product_identification_helper": { "purl": "pkg:rpm/tuxcare/pcs-snmp@0.9.169-3.0.1.el7_9.3.tuxcare.els1?arch=x86_64" } } }, { "category": "product_version", "name": "pcs-0:0.9.169-3.0.1.el7_9.3.tuxcare.els1.x86_64", "product": { "name": "pcs-0:0.9.169-3.0.1.el7_9.3.tuxcare.els1.x86_64", "product_id": "pcs-0:0.9.169-3.0.1.el7_9.3.tuxcare.els1.x86_64", "product_identification_helper": { "purl": "pkg:rpm/tuxcare/pcs@0.9.169-3.0.1.el7_9.3.tuxcare.els1?arch=x86_64" } } } ], "category": "architecture", "name": "x86_64" } ], "category": "vendor", "name": "TuxCare" } ], "relationships": [ { "category": "default_component_of", "full_product_name": { "name": "pcs-snmp-0:0.9.169-3.0.1.el7_9.3.tuxcare.els1.aarch64 as a component of Community Enterprise Operating System 7", "product_id": "CentOS-7:pcs-snmp-0:0.9.169-3.0.1.el7_9.3.tuxcare.els1.aarch64" }, "product_reference": "pcs-snmp-0:0.9.169-3.0.1.el7_9.3.tuxcare.els1.aarch64", "relates_to_product_reference": "CentOS-7" }, { "category": "default_component_of", "full_product_name": { "name": "pcs-snmp-0:0.9.169-3.0.1.el7_9.3.tuxcare.els1.i686 as a component of Community Enterprise Operating System 7", "product_id": "CentOS-7:pcs-snmp-0:0.9.169-3.0.1.el7_9.3.tuxcare.els1.i686" }, "product_reference": "pcs-snmp-0:0.9.169-3.0.1.el7_9.3.tuxcare.els1.i686", "relates_to_product_reference": "CentOS-7" }, { "category": "default_component_of", "full_product_name": { "name": "pcs-snmp-0:0.9.169-3.0.1.el7_9.3.tuxcare.els1.x86_64 as a component of Community Enterprise Operating System 7", "product_id": "CentOS-7:pcs-snmp-0:0.9.169-3.0.1.el7_9.3.tuxcare.els1.x86_64" }, "product_reference": "pcs-snmp-0:0.9.169-3.0.1.el7_9.3.tuxcare.els1.x86_64", "relates_to_product_reference": "CentOS-7" }, { "category": "default_component_of", "full_product_name": { "name": "pcs-0:0.9.169-3.0.1.el7_9.3.tuxcare.els1.x86_64 as a component of Community Enterprise Operating System 7", "product_id": "CentOS-7:pcs-0:0.9.169-3.0.1.el7_9.3.tuxcare.els1.x86_64" }, "product_reference": "pcs-0:0.9.169-3.0.1.el7_9.3.tuxcare.els1.x86_64", "relates_to_product_reference": "CentOS-7" }, { "category": "default_component_of", "full_product_name": { "name": "pcs-0:0.9.169-3.0.1.el7_9.3.tuxcare.els1.i686 as a component of Community Enterprise Operating System 7", "product_id": "CentOS-7:pcs-0:0.9.169-3.0.1.el7_9.3.tuxcare.els1.i686" }, "product_reference": "pcs-0:0.9.169-3.0.1.el7_9.3.tuxcare.els1.i686", "relates_to_product_reference": "CentOS-7" }, { "category": "default_component_of", "full_product_name": { "name": "pcs-0:0.9.169-3.0.1.el7_9.3.tuxcare.els1.aarch64 as a component of Community Enterprise Operating System 7", "product_id": "CentOS-7:pcs-0:0.9.169-3.0.1.el7_9.3.tuxcare.els1.aarch64" }, "product_reference": "pcs-0:0.9.169-3.0.1.el7_9.3.tuxcare.els1.aarch64", "relates_to_product_reference": "CentOS-7" } ] }, "vulnerabilities": [ { "cve": "CVE-2025-61770", "notes": [ { "category": "description", "text": "Rack is a modular Ruby web server interface. In versions prior to 2.2.19, 3.1.17, and 3.2.2, `Rack::Multipart::Parser` buffers the entire multipart preamble (bytes before the first boundary) in memory without any size limit. A client can send a large preamble followed by a valid boundary, causing significant memory use and potential process termination due to out-of-memory (OOM) conditions. Remote attackers can trigger large transient memory spikes by including a long preamble in multipart/form-data requests. The impact scales with allowed request sizes and concurrency, potentially causing worker crashes or severe slowdown due to garbage collection. Versions 2.2.19, 3.1.17, and 3.2.2 enforce a preamble size limit (e.g., 16 KiB) or discard preamble data entirely. Workarounds include limiting total request body size at the proxy or web server level and monitoring memory and set per-process limits to prevent OOM conditions.", "title": "Vulnerability description" }, { "category": "other", "text": "TuxCare has assessed that this vulnerability does not impact any currently supported TuxCare products. This evaluation may change as new information becomes available. For additional details regarding this vulnerability and affected products, refer to the provided references.", "title": "Statement" } ], "product_status": { "known_not_affected": [ "CentOS-7:pcs-0:0.9.169-3.0.1.el7_9.3.tuxcare.els1.aarch64", "CentOS-7:pcs-0:0.9.169-3.0.1.el7_9.3.tuxcare.els1.i686", "CentOS-7:pcs-0:0.9.169-3.0.1.el7_9.3.tuxcare.els1.x86_64", "CentOS-7:pcs-snmp-0:0.9.169-3.0.1.el7_9.3.tuxcare.els1.aarch64", "CentOS-7:pcs-snmp-0:0.9.169-3.0.1.el7_9.3.tuxcare.els1.i686", "CentOS-7:pcs-snmp-0:0.9.169-3.0.1.el7_9.3.tuxcare.els1.x86_64" ] }, "references": [ { "category": "self", "summary": "Canonical URL", "url": "https://cve.tuxcare.com/els/cve/CVE-2025-61770" }, { "category": "external", "summary": "https://github.com/rack/rack/commit/589127f4ac8b5cf11cf88fb0cd116ffed4d2181e", "url": "https://github.com/rack/rack/commit/589127f4ac8b5cf11cf88fb0cd116ffed4d2181e" }, { "category": "external", "summary": "https://github.com/rack/rack/commit/d869fed663b113b95a74ad53e1b5cae6ab31f29e", "url": "https://github.com/rack/rack/commit/d869fed663b113b95a74ad53e1b5cae6ab31f29e" }, { "category": "external", "summary": "https://github.com/rack/rack/commit/e08f78c656c9394d6737c022bde087e0f33336fd", "url": "https://github.com/rack/rack/commit/e08f78c656c9394d6737c022bde087e0f33336fd" }, { "category": "external", "summary": "https://github.com/rack/rack/security/advisories/GHSA-p543-xpfm-54cp", "url": "https://github.com/rack/rack/security/advisories/GHSA-p543-xpfm-54cp" } ], "release_date": "2025-10-07T15:16:00Z", "threats": [ { "category": "impact", "details": "Important" }, { "category": "impact", "date": "2026-10-20T23:46:21.720019Z", "details": "The pcs package for CentOS 7 ELS is not affected by CVE-2025-61770. The unbounded multipart preamble buffering described in the CVE was introduced in the rack 2.2 and 3.x lines, while pcs 0.9.169 bundles rack 1.6.12.1, whose multipart parser reads the preamble in 16 KiB chunks, discards each complete preamble line, and raises an error once a partial line reaches that size, so the buffer remains bounded.", "product_ids": [ "CentOS-7:pcs-0:0.9.169-3.0.1.el7_9.3.tuxcare.els1.aarch64", "CentOS-7:pcs-0:0.9.169-3.0.1.el7_9.3.tuxcare.els1.i686", "CentOS-7:pcs-0:0.9.169-3.0.1.el7_9.3.tuxcare.els1.x86_64", "CentOS-7:pcs-snmp-0:0.9.169-3.0.1.el7_9.3.tuxcare.els1.aarch64", "CentOS-7:pcs-snmp-0:0.9.169-3.0.1.el7_9.3.tuxcare.els1.i686", "CentOS-7:pcs-snmp-0:0.9.169-3.0.1.el7_9.3.tuxcare.els1.x86_64" ] } ] } ] }