{ "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/ubuntu20.04els/vex/2023/cve-2023-34241-els_os-ubuntu20_04els.json" } ], "tracking": { "current_release_date": "2026-04-10T19:47:04Z", "generator": { "date": "2026-04-10T19:47:04Z", "engine": { "name": "pyCSAF" } }, "id": "CVE-2023-34241-ELS_OS-UBUNTU20.04ELS", "initial_release_date": "2023-06-22T23:15:00Z", "revision_history": [ { "date": "2023-06-22T23:15:00Z", "number": "1", "summary": "Initial version" }, { "date": "2026-04-10T19:47:04Z", "number": "2", "summary": "Official Publication" } ], "status": "final", "version": "2" }, "title": "Security update on CVE-2023-34241" }, "product_tree": { "branches": [ { "branches": [ { "branches": [ { "category": "product_name", "name": "Ubuntu 20.04", "product": { "name": "Ubuntu 20.04", "product_id": "Ubuntu-20", "product_identification_helper": { "cpe": "cpe:2.3:o:canonical:ubuntu_linux:20.04:*:*:*:lts:*:*:*" } } } ], "category": "product_family", "name": "Ubuntu" } ], "category": "vendor", "name": "Canonical Ltd." }, { "branches": [ { "branches": [ { "category": "product_version", "name": "cups-common-0:2.3.1-9ubuntu1.9+tuxcare.els1.all", "product": { "name": "cups-common-0:2.3.1-9ubuntu1.9+tuxcare.els1.all", "product_id": "cups-common-0:2.3.1-9ubuntu1.9+tuxcare.els1.all", "product_identification_helper": { "purl": "pkg:deb/tuxcare/cups-common@2.3.1-9ubuntu1.9%2Btuxcare.els1?arch=all" } } }, { "category": "product_version", "name": "cups-server-common-0:2.3.1-9ubuntu1.9+tuxcare.els1.all", "product": { "name": "cups-server-common-0:2.3.1-9ubuntu1.9+tuxcare.els1.all", "product_id": 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"category": "product_version", "name": "cups-bsd-0:2.3.1-9ubuntu1.9+tuxcare.els1.amd64", "product": { "name": "cups-bsd-0:2.3.1-9ubuntu1.9+tuxcare.els1.amd64", "product_id": "cups-bsd-0:2.3.1-9ubuntu1.9+tuxcare.els1.amd64", "product_identification_helper": { "purl": "pkg:deb/tuxcare/cups-bsd@2.3.1-9ubuntu1.9%2Btuxcare.els1?arch=amd64" } } }, { "category": "product_version", "name": "cups-0:2.3.1-9ubuntu1.9+tuxcare.els1.amd64", "product": { "name": "cups-0:2.3.1-9ubuntu1.9+tuxcare.els1.amd64", "product_id": "cups-0:2.3.1-9ubuntu1.9+tuxcare.els1.amd64", "product_identification_helper": { "purl": "pkg:deb/tuxcare/cups@2.3.1-9ubuntu1.9%2Btuxcare.els1?arch=amd64" } } }, { "category": "product_version", "name": "cups-ipp-utils-0:2.3.1-9ubuntu1.9+tuxcare.els1.amd64", "product": { "name": "cups-ipp-utils-0:2.3.1-9ubuntu1.9+tuxcare.els1.amd64", "product_id": "cups-ipp-utils-0:2.3.1-9ubuntu1.9+tuxcare.els1.amd64", "product_identification_helper": { "purl": "pkg:deb/tuxcare/cups-ipp-utils@2.3.1-9ubuntu1.9%2Btuxcare.els1?arch=amd64" } } }, { "category": "product_version", "name": "libcupsimage2-0:2.3.1-9ubuntu1.9+tuxcare.els1.amd64", "product": { "name": "libcupsimage2-0:2.3.1-9ubuntu1.9+tuxcare.els1.amd64", "product_id": "libcupsimage2-0:2.3.1-9ubuntu1.9+tuxcare.els1.amd64", "product_identification_helper": { "purl": "pkg:deb/tuxcare/libcupsimage2@2.3.1-9ubuntu1.9%2Btuxcare.els1?arch=amd64" } } }, { "category": "product_version", "name": "cups-daemon-0:2.3.1-9ubuntu1.9+tuxcare.els1.amd64", "product": { "name": "cups-daemon-0:2.3.1-9ubuntu1.9+tuxcare.els1.amd64", "product_id": "cups-daemon-0:2.3.1-9ubuntu1.9+tuxcare.els1.amd64", "product_identification_helper": { "purl": "pkg:deb/tuxcare/cups-daemon@2.3.1-9ubuntu1.9%2Btuxcare.els1?arch=amd64" } } }, { "category": "product_version", "name": "cups-client-0:2.3.1-9ubuntu1.9+tuxcare.els1.amd64", "product": { "name": "cups-client-0:2.3.1-9ubuntu1.9+tuxcare.els1.amd64", "product_id": 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"product": { "name": "cups-ppdc-0:2.3.1-9ubuntu1.9+tuxcare.els1.amd64", "product_id": "cups-ppdc-0:2.3.1-9ubuntu1.9+tuxcare.els1.amd64", "product_identification_helper": { "purl": "pkg:deb/tuxcare/cups-ppdc@2.3.1-9ubuntu1.9%2Btuxcare.els1?arch=amd64" } } } ], "category": "architecture", "name": "amd64" } ], "category": "vendor", "name": "TuxCare" } ], "relationships": [ { "category": "default_component_of", "full_product_name": { "name": "cups-common-0:2.3.1-9ubuntu1.9+tuxcare.els1.all as a component of Ubuntu 20.04", "product_id": "Ubuntu-20:cups-common-0:2.3.1-9ubuntu1.9+tuxcare.els1.all" }, "product_reference": "cups-common-0:2.3.1-9ubuntu1.9+tuxcare.els1.all", "relates_to_product_reference": "Ubuntu-20" }, { "category": "default_component_of", "full_product_name": { "name": "libcups2-dev-0:2.3.1-9ubuntu1.9+tuxcare.els1.amd64 as a component of Ubuntu 20.04", "product_id": "Ubuntu-20:libcups2-dev-0:2.3.1-9ubuntu1.9+tuxcare.els1.amd64" }, "product_reference": "libcups2-dev-0:2.3.1-9ubuntu1.9+tuxcare.els1.amd64", "relates_to_product_reference": "Ubuntu-20" }, { "category": "default_component_of", "full_product_name": { "name": "libcupsimage2-dev-0:2.3.1-9ubuntu1.9+tuxcare.els1.amd64 as a component of Ubuntu 20.04", "product_id": "Ubuntu-20:libcupsimage2-dev-0:2.3.1-9ubuntu1.9+tuxcare.els1.amd64" }, "product_reference": "libcupsimage2-dev-0:2.3.1-9ubuntu1.9+tuxcare.els1.amd64", "relates_to_product_reference": "Ubuntu-20" }, { "category": "default_component_of", "full_product_name": { "name": "cups-bsd-0:2.3.1-9ubuntu1.9+tuxcare.els1.amd64 as a component of Ubuntu 20.04", "product_id": "Ubuntu-20:cups-bsd-0:2.3.1-9ubuntu1.9+tuxcare.els1.amd64" }, "product_reference": "cups-bsd-0:2.3.1-9ubuntu1.9+tuxcare.els1.amd64", "relates_to_product_reference": "Ubuntu-20" }, { "category": "default_component_of", "full_product_name": { "name": "cups-0:2.3.1-9ubuntu1.9+tuxcare.els1.amd64 as a component of Ubuntu 20.04", "product_id": "Ubuntu-20:cups-0:2.3.1-9ubuntu1.9+tuxcare.els1.amd64" }, "product_reference": "cups-0:2.3.1-9ubuntu1.9+tuxcare.els1.amd64", "relates_to_product_reference": "Ubuntu-20" }, { "category": "default_component_of", "full_product_name": { "name": "cups-ipp-utils-0:2.3.1-9ubuntu1.9+tuxcare.els1.amd64 as a component of Ubuntu 20.04", "product_id": "Ubuntu-20:cups-ipp-utils-0:2.3.1-9ubuntu1.9+tuxcare.els1.amd64" }, "product_reference": "cups-ipp-utils-0:2.3.1-9ubuntu1.9+tuxcare.els1.amd64", "relates_to_product_reference": "Ubuntu-20" }, { "category": "default_component_of", "full_product_name": { "name": "libcupsimage2-0:2.3.1-9ubuntu1.9+tuxcare.els1.amd64 as a component of Ubuntu 20.04", "product_id": "Ubuntu-20:libcupsimage2-0:2.3.1-9ubuntu1.9+tuxcare.els1.amd64" }, "product_reference": "libcupsimage2-0:2.3.1-9ubuntu1.9+tuxcare.els1.amd64", "relates_to_product_reference": "Ubuntu-20" }, { "category": "default_component_of", "full_product_name": { "name": "cups-daemon-0:2.3.1-9ubuntu1.9+tuxcare.els1.amd64 as a component of Ubuntu 20.04", "product_id": "Ubuntu-20:cups-daemon-0:2.3.1-9ubuntu1.9+tuxcare.els1.amd64" }, "product_reference": "cups-daemon-0:2.3.1-9ubuntu1.9+tuxcare.els1.amd64", "relates_to_product_reference": "Ubuntu-20" }, { "category": "default_component_of", "full_product_name": { "name": "cups-client-0:2.3.1-9ubuntu1.9+tuxcare.els1.amd64 as a component of Ubuntu 20.04", "product_id": "Ubuntu-20:cups-client-0:2.3.1-9ubuntu1.9+tuxcare.els1.amd64" }, "product_reference": "cups-client-0:2.3.1-9ubuntu1.9+tuxcare.els1.amd64", "relates_to_product_reference": "Ubuntu-20" }, { "category": "default_component_of", "full_product_name": { "name": "cups-server-common-0:2.3.1-9ubuntu1.9+tuxcare.els1.all as a component of Ubuntu 20.04", "product_id": "Ubuntu-20:cups-server-common-0:2.3.1-9ubuntu1.9+tuxcare.els1.all" }, "product_reference": "cups-server-common-0:2.3.1-9ubuntu1.9+tuxcare.els1.all", "relates_to_product_reference": "Ubuntu-20" }, { "category": "default_component_of", "full_product_name": { "name": "cups-core-drivers-0:2.3.1-9ubuntu1.9+tuxcare.els1.amd64 as a component of Ubuntu 20.04", "product_id": "Ubuntu-20:cups-core-drivers-0:2.3.1-9ubuntu1.9+tuxcare.els1.amd64" }, "product_reference": "cups-core-drivers-0:2.3.1-9ubuntu1.9+tuxcare.els1.amd64", "relates_to_product_reference": "Ubuntu-20" }, { "category": "default_component_of", "full_product_name": { "name": "libcups2-0:2.3.1-9ubuntu1.9+tuxcare.els1.amd64 as a component of Ubuntu 20.04", "product_id": "Ubuntu-20:libcups2-0:2.3.1-9ubuntu1.9+tuxcare.els1.amd64" }, "product_reference": "libcups2-0:2.3.1-9ubuntu1.9+tuxcare.els1.amd64", "relates_to_product_reference": "Ubuntu-20" }, { "category": "default_component_of", "full_product_name": { "name": "cups-ppdc-0:2.3.1-9ubuntu1.9+tuxcare.els1.amd64 as a component of Ubuntu 20.04", "product_id": "Ubuntu-20:cups-ppdc-0:2.3.1-9ubuntu1.9+tuxcare.els1.amd64" }, "product_reference": "cups-ppdc-0:2.3.1-9ubuntu1.9+tuxcare.els1.amd64", "relates_to_product_reference": "Ubuntu-20" } ] }, "vulnerabilities": [ { "cve": "CVE-2023-34241", "cwe": { "id": "CWE-416", "name": "Use After Free" }, "notes": [ { "category": "description", "text": "OpenPrinting CUPS is a standards-based, open source printing system for Linux and other Unix-like operating systems. Starting in version 2.0.0 and prior to version 2.4.6, CUPS logs data of free memory to the logging service AFTER the connection has been closed, when it should have logged the data right before. This is a use-after-free bug that impacts the entire cupsd process.\n\nThe exact cause of this issue is the function `httpClose(con->http)` being called in `scheduler/client.c`. The problem is that httpClose always, provided its argument is not null, frees the pointer at the end of the call, only for cupsdLogClient to pass the pointer to httpGetHostname. This issue happens in function `cupsdAcceptClient` if LogLevel is warn or higher and in two scenarios: there is a double-lookup for the IP Address (HostNameLookups Double is set in `cupsd.conf`) which fails to resolve, or if CUPS is compiled with TCP wrappers and the connection is refused by rules from `/etc/hosts.allow` and `/etc/hosts.deny`.\n\nVersion 2.4.6 has a patch for this issue.", "title": "Vulnerability description" }, { "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": { "under_investigation": [ "Ubuntu-20:cups-0:2.3.1-9ubuntu1.9+tuxcare.els1.amd64", "Ubuntu-20:cups-bsd-0:2.3.1-9ubuntu1.9+tuxcare.els1.amd64", "Ubuntu-20:cups-client-0:2.3.1-9ubuntu1.9+tuxcare.els1.amd64", "Ubuntu-20:cups-common-0:2.3.1-9ubuntu1.9+tuxcare.els1.all", "Ubuntu-20:cups-core-drivers-0:2.3.1-9ubuntu1.9+tuxcare.els1.amd64", "Ubuntu-20:cups-daemon-0:2.3.1-9ubuntu1.9+tuxcare.els1.amd64", "Ubuntu-20:cups-ipp-utils-0:2.3.1-9ubuntu1.9+tuxcare.els1.amd64", "Ubuntu-20:cups-ppdc-0:2.3.1-9ubuntu1.9+tuxcare.els1.amd64", "Ubuntu-20:cups-server-common-0:2.3.1-9ubuntu1.9+tuxcare.els1.all", "Ubuntu-20:libcups2-0:2.3.1-9ubuntu1.9+tuxcare.els1.amd64", "Ubuntu-20:libcups2-dev-0:2.3.1-9ubuntu1.9+tuxcare.els1.amd64", "Ubuntu-20:libcupsimage2-0:2.3.1-9ubuntu1.9+tuxcare.els1.amd64", "Ubuntu-20:libcupsimage2-dev-0:2.3.1-9ubuntu1.9+tuxcare.els1.amd64" ] }, "references": [ { "category": "self", "summary": "Canonical URL", "url": "https://cve.tuxcare.com/els/cve/CVE-2023-34241" }, { "category": "external", "summary": "http://www.openwall.com/lists/oss-security/2023/06/23/10", "url": "http://www.openwall.com/lists/oss-security/2023/06/23/10" }, { "category": "external", "summary": "http://www.openwall.com/lists/oss-security/2023/06/26/1", "url": "http://www.openwall.com/lists/oss-security/2023/06/26/1" }, { "category": "external", "summary": "https://github.com/OpenPrinting/cups/commit/9809947a959e18409dcf562a3466ef246cb90cb2", "url": "https://github.com/OpenPrinting/cups/commit/9809947a959e18409dcf562a3466ef246cb90cb2" }, { "category": "external", "summary": "https://github.com/OpenPrinting/cups/releases/tag/v2.4.6", "url": "https://github.com/OpenPrinting/cups/releases/tag/v2.4.6" }, { "category": "external", "summary": "https://github.com/OpenPrinting/cups/security/advisories/GHSA-qjgh-5hcq-5f25", "url": "https://github.com/OpenPrinting/cups/security/advisories/GHSA-qjgh-5hcq-5f25" }, { "category": "external", "summary": "https://lists.debian.org/debian-lts-announce/2023/06/msg00038.html", "url": "https://lists.debian.org/debian-lts-announce/2023/06/msg00038.html" }, { "category": "external", "summary": "https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/7I7DWGYGEMBNLZF5UQBMF3SONR37YUBN/", "url": "https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/7I7DWGYGEMBNLZF5UQBMF3SONR37YUBN/" }, { "category": "external", "summary": "https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/TBIYKDS3UG3W4Z7YOHTR2AWFNBRYPNYY/", "url": "https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/TBIYKDS3UG3W4Z7YOHTR2AWFNBRYPNYY/" }, { "category": "external", "summary": "https://support.apple.com/kb/HT213843", "url": "https://support.apple.com/kb/HT213843" }, { "category": "external", "summary": "https://support.apple.com/kb/HT213844", "url": "https://support.apple.com/kb/HT213844" }, { "category": "external", "summary": "https://support.apple.com/kb/HT213845", "url": "https://support.apple.com/kb/HT213845" } ], "release_date": "2023-06-22T23:15:00Z", "remediations": [ { "category": "none_available", "details": "Affected", "product_ids": [ "Ubuntu-20:cups-0:2.3.1-9ubuntu1.9+tuxcare.els1.amd64", "Ubuntu-20:cups-bsd-0:2.3.1-9ubuntu1.9+tuxcare.els1.amd64", "Ubuntu-20:cups-client-0:2.3.1-9ubuntu1.9+tuxcare.els1.amd64", "Ubuntu-20:cups-common-0:2.3.1-9ubuntu1.9+tuxcare.els1.all", "Ubuntu-20:cups-core-drivers-0:2.3.1-9ubuntu1.9+tuxcare.els1.amd64", "Ubuntu-20:cups-daemon-0:2.3.1-9ubuntu1.9+tuxcare.els1.amd64", "Ubuntu-20:cups-ipp-utils-0:2.3.1-9ubuntu1.9+tuxcare.els1.amd64", "Ubuntu-20:cups-ppdc-0:2.3.1-9ubuntu1.9+tuxcare.els1.amd64", "Ubuntu-20:cups-server-common-0:2.3.1-9ubuntu1.9+tuxcare.els1.all", "Ubuntu-20:libcups2-0:2.3.1-9ubuntu1.9+tuxcare.els1.amd64", "Ubuntu-20:libcups2-dev-0:2.3.1-9ubuntu1.9+tuxcare.els1.amd64", "Ubuntu-20:libcupsimage2-0:2.3.1-9ubuntu1.9+tuxcare.els1.amd64", "Ubuntu-20:libcupsimage2-dev-0:2.3.1-9ubuntu1.9+tuxcare.els1.amd64" ] } ], "scores": [ { "cvss_v3": { "attackComplexity": "LOW", "attackVector": "LOCAL", "availabilityImpact": "HIGH", "baseScore": 7.1, "baseSeverity": "HIGH", "confidentialityImpact": "HIGH", "integrityImpact": "NONE", "privilegesRequired": "LOW", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H", "version": "3.1" }, "products": [ "Ubuntu-20:cups-0:2.3.1-9ubuntu1.9+tuxcare.els1.amd64", "Ubuntu-20:cups-bsd-0:2.3.1-9ubuntu1.9+tuxcare.els1.amd64", "Ubuntu-20:cups-client-0:2.3.1-9ubuntu1.9+tuxcare.els1.amd64", "Ubuntu-20:cups-common-0:2.3.1-9ubuntu1.9+tuxcare.els1.all", "Ubuntu-20:cups-core-drivers-0:2.3.1-9ubuntu1.9+tuxcare.els1.amd64", "Ubuntu-20:cups-daemon-0:2.3.1-9ubuntu1.9+tuxcare.els1.amd64", "Ubuntu-20:cups-ipp-utils-0:2.3.1-9ubuntu1.9+tuxcare.els1.amd64", "Ubuntu-20:cups-ppdc-0:2.3.1-9ubuntu1.9+tuxcare.els1.amd64", "Ubuntu-20:cups-server-common-0:2.3.1-9ubuntu1.9+tuxcare.els1.all", "Ubuntu-20:libcups2-0:2.3.1-9ubuntu1.9+tuxcare.els1.amd64", "Ubuntu-20:libcups2-dev-0:2.3.1-9ubuntu1.9+tuxcare.els1.amd64", "Ubuntu-20:libcupsimage2-0:2.3.1-9ubuntu1.9+tuxcare.els1.amd64", "Ubuntu-20:libcupsimage2-dev-0:2.3.1-9ubuntu1.9+tuxcare.els1.amd64" ] } ], "threats": [ { "category": "impact", "details": "Important" } ] } ] }