{ "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-2023-0286-els_os-ubuntu20_04els.json" } ], "tracking": { "current_release_date": "2026-04-20T12:25:25Z", "generator": { "date": "2026-04-20T12:25:25Z", "engine": { "name": "pyCSAF" } }, "id": "CVE-2023-0286-ELS_OS-UBUNTU20.04ELS", "initial_release_date": "2023-02-08T20:15:00Z", "revision_history": [ { "date": "2023-02-08T20:15:00Z", "number": "1", "summary": "Initial version" }, { "date": "2026-04-20T12:25:25Z", "number": "2", "summary": "Official Publication" } ], "status": "final", "version": "2" }, "title": "Security update on CVE-2023-0286" }, "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" }, { "branches": [ { "category": "product_version", "name": "libssl-dev-0:1.1.1f-1ubuntu2.24.amd64", "product": { "name": "libssl-dev-0:1.1.1f-1ubuntu2.24.amd64", "product_id": "libssl-dev-0:1.1.1f-1ubuntu2.24.amd64", "product_identification_helper": { "purl": "pkg:deb/ubuntu/libssl-dev@1.1.1f-1ubuntu2.24?arch=amd64" } } } ], "category": "architecture", "name": "amd64" } ], "category": "vendor", "name": "Canonical Ltd." }, { "branches": [ { "branches": [ { "category": "product_version", "name": "libssl-dev-0:1.1.1f-1ubuntu2.24+tuxcare.els2.amd64", "product": { "name": "libssl-dev-0:1.1.1f-1ubuntu2.24+tuxcare.els2.amd64", "product_id": "libssl-dev-0:1.1.1f-1ubuntu2.24+tuxcare.els2.amd64", "product_identification_helper": { "purl": "pkg:deb/tuxcare/libssl-dev@1.1.1f-1ubuntu2.24%2Btuxcare.els2?arch=amd64" } } } ], "category": "architecture", "name": "amd64" } ], "category": "vendor", "name": "TuxCare" } ], "relationships": [ { "category": "default_component_of", "full_product_name": { "name": "libssl-dev-0:1.1.1f-1ubuntu2.24+tuxcare.els2.amd64 as a component of Ubuntu 20.04", "product_id": "Ubuntu-20:libssl-dev-0:1.1.1f-1ubuntu2.24+tuxcare.els2.amd64" }, "product_reference": "libssl-dev-0:1.1.1f-1ubuntu2.24+tuxcare.els2.amd64", "relates_to_product_reference": "Ubuntu-20" }, { "category": "default_component_of", "full_product_name": { "name": "libssl-dev-0:1.1.1f-1ubuntu2.24.amd64 as a component of Ubuntu 20.04", "product_id": "Ubuntu-20:libssl-dev-0:1.1.1f-1ubuntu2.24.amd64" }, "product_reference": "libssl-dev-0:1.1.1f-1ubuntu2.24.amd64", "relates_to_product_reference": "Ubuntu-20" } ] }, "vulnerabilities": [ { "cve": "CVE-2023-0286", "cwe": { "id": "CWE-843", "name": "Access of Resource Using Incompatible Type ('Type Confusion')" }, "notes": [ { "category": "description", "text": "There is a type confusion vulnerability relating to X.400 address processing\ninside an X.509 GeneralName. X.400 addresses were parsed as an ASN1_STRING but\nthe public structure definition for GENERAL_NAME incorrectly specified the type\nof the x400Address field as ASN1_TYPE. This field is subsequently interpreted by\nthe OpenSSL function GENERAL_NAME_cmp as an ASN1_TYPE rather than an\nASN1_STRING.\n\nWhen CRL checking is enabled (i.e. the application sets the\nX509_V_FLAG_CRL_CHECK flag), this vulnerability may allow an attacker to pass\narbitrary pointers to a memcmp call, enabling them to read memory contents or\nenact a denial of service. In most cases, the attack requires the attacker to\nprovide both the certificate chain and CRL, neither of which need to have a\nvalid signature. If the attacker only controls one of these inputs, the other\ninput must already contain an X.400 address as a CRL distribution point, which\nis uncommon. As such, this vulnerability is most likely to only affect\napplications which have implemented their own functionality for retrieving CRLs\nover a network.", "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": { "fixed": [ "Ubuntu-20:libssl-dev-0:1.1.1f-1ubuntu2.24+tuxcare.els2.amd64" ], "known_affected": [ "Ubuntu-20:libssl-dev-0:1.1.1f-1ubuntu2.24.amd64" ] }, "references": [ { "category": "self", "summary": "Canonical URL", "url": "https://cve.tuxcare.com/els/cve/CVE-2023-0286" }, { "category": "external", "summary": "https://ftp.openbsd.org/pub/OpenBSD/LibreSSL/libressl-3.6.2-relnotes.txt", "url": "https://ftp.openbsd.org/pub/OpenBSD/LibreSSL/libressl-3.6.2-relnotes.txt" }, { "category": "external", "summary": "https://ftp.openbsd.org/pub/OpenBSD/patches/7.2/common/018_x509.patch.sig", "url": "https://ftp.openbsd.org/pub/OpenBSD/patches/7.2/common/018_x509.patch.sig" }, { "category": "external", "summary": "https://git.openssl.org/gitweb/?p=openssl.git;a=commitdiff;h=2c6c9d439b484e1ba9830d8454a34fa4f80fdfe9", "url": "https://git.openssl.org/gitweb/?p=openssl.git;a=commitdiff;h=2c6c9d439b484e1ba9830d8454a34fa4f80fdfe9" }, { "category": "external", "summary": "https://git.openssl.org/gitweb/?p=openssl.git;a=commitdiff;h=2f7530077e0ef79d98718138716bc51ca0cad658", "url": "https://git.openssl.org/gitweb/?p=openssl.git;a=commitdiff;h=2f7530077e0ef79d98718138716bc51ca0cad658" }, { "category": "external", "summary": "https://git.openssl.org/gitweb/?p=openssl.git;a=commitdiff;h=fd2af07dc083a350c959147097003a14a5e8ac4d", "url": "https://git.openssl.org/gitweb/?p=openssl.git;a=commitdiff;h=fd2af07dc083a350c959147097003a14a5e8ac4d" }, { "category": "external", "summary": "https://security.gentoo.org/glsa/202402-08", "url": "https://security.gentoo.org/glsa/202402-08" }, { "category": "external", "summary": "https://www.openssl.org/news/secadv/20230207.txt", "url": "https://www.openssl.org/news/secadv/20230207.txt" }, { "category": "external", "summary": "https://psirt.global.sonicwall.com/vuln-detail/SNWLID-2023-0003", "url": "https://psirt.global.sonicwall.com/vuln-detail/SNWLID-2023-0003" } ], "release_date": "2023-02-08T20:15:00Z", "remediations": [ { "category": "none_available", "details": "Affected", "product_ids": [ "Ubuntu-20:libssl-dev-0:1.1.1f-1ubuntu2.24.amd64" ] } ], "scores": [ { "cvss_v3": { "attackComplexity": "HIGH", "attackVector": "NETWORK", "availabilityImpact": "HIGH", "baseScore": 7.4, "baseSeverity": "HIGH", "confidentialityImpact": "HIGH", "integrityImpact": "NONE", "privilegesRequired": "NONE", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:H", "version": "3.1" }, "products": [ "Ubuntu-20:libssl-dev-0:1.1.1f-1ubuntu2.24+tuxcare.els2.amd64", "Ubuntu-20:libssl-dev-0:1.1.1f-1ubuntu2.24.amd64" ] } ], "threats": [ { "category": "impact", "details": "Important" } ] } ] }