{ "document":{ "aggregate_severity":{ "namespace":"https://nvd.nist.gov/vuln-metrics/cvss", "text":"HIGH" }, "category":"csaf_vex", "csaf_version":"2.0", "distribution":{ "tlp":{ "label":"WHITE", "url":"https:/www.first.org/tlp/" } }, "lang":"en", "notes":[ { "text":"Issue summary: OpenSSL CMS decryption sizes the key-unwrap output buffer based\non querying the unwrapped key size, but the AES-WRAP-PAD unwrap primitive\ncan write and cleanse more bytes than that query reports, causing an 8-byte\nout-of-bounds heap write.\n\nImpact summary: An attacker who supplies a crafted CMS message can trigger a\ndeterministic 8-byte out-of-bounds heap write when the victim decrypts it\nwith CMS_decrypt(), corrupting the heap and typically resulting in a Denial\nof Service.\n\nCWE: CWE-787: Out-of-bounds Write\n\nDescription: The key-wrap OID is potentially attacker-controlled on the wire.\nCMS unwrapping allows both id-aesNNN-wrap-pad and id-aesNNN-wrap ciphers.\nAn attacker can take a legitimate message and change a single OID byte to\nselect the padded variant while leaving the message otherwise valid. Since\nthe unwrap key is derived from the recipient's private operation (ECDH key\nagreement or ML-KEM decapsulation), the RFC 5649 integrity check cannot\npass, and the decryption fails with integrity failure.\n\nThe write is a fixed-size (8-byte), fixed-value (zero) heap overflow\nimmediately past the allocation, requires no special configuration, and is\nreachable from the public CMS_decrypt() function. The consequence is\na heap corruption leading to a Denial of Service. The fix in the CMS code\nsizes the unwrap output buffer for the worst case so a failed unwrap cannot\nwrite past the allocation.\n\nFIPS impact: no\n\nAs the CMS code lives outside the FIPS module boundary, no FIPS\nmodules are affected by this CVE.", "category":"general", "title":"Synopsis" } ], "publisher":null, "references":[ { "summary":"nvd cve", "category":"external", "url":"https://nvd.nist.gov/vuln/detail/CVE-2026-63072" }, { "summary":"CVE-2026-63072 vex file", "category":"self", "url":"https://repo.openeuler.org/security/data/csaf/cve/2026/csaf-openeuler-cve-2026-63072.json" }, { "summary":"openEuler-SA-2026-3858", "category":"self", "url":"https://www.openeuler.org/zh/security/security-bulletins/detail/?id=openEuler-SA-2026-3858" }, { "summary":"CVE-2026-63072", "category":"self", "url":"https://www.openeuler.org/en/security/cve/detail/?cveId=CVE-2026-63072&packageName=edk2" } ], "title":"openEuler cve CVE-2026-63072", "tracking":{ "initial_release_date":"2026-09-16T18:08:57+08:00", "revision_history":[ { "date":"2026-09-16T18:08:57+08:00", "summary":"Initial", "number":"1.0.0" } ], "generator":{ "date":"2026-09-16T18:08:57+08:00", "engine":{ "name":"openEuler CSAF Tool V1.0" } }, "current_release_date":"2026-09-16T18:08:57+08:00", "id":"CVE-2026-63072", "version":"1.0.0", "status":"interim" } }, "product_tree":{ "branches":[ { "name":"openEuler", "category":"vendor", "branches":[ { "name":"openEuler", "branches":[ { "product":{ "product_identification_helper":{ "cpe":"cpe:/a:openEuler:openEuler:24.03-LTS-SP4" }, "product_id":"openEuler-24.03-LTS-SP4", "name":"openEuler-24.03-LTS-SP4" }, "name":"openEuler-24.03-LTS-SP4", "category":"product_version" } ], "category":"product_name" }, { "name":"aarch64", "branches":[ { "product":{ "product_identification_helper":{ "cpe":"cpe:/a:openEuler:openEuler:24.03-LTS-SP4" }, "product_id":"edk2-debuginfo-202308-52.oe2403sp4.aarch64.rpm", 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openEuler-24.03-LTS-SP4" }, "category":"default_component_of" }, { "relates_to_product_reference":"openEuler-24.03-LTS-SP4", "product_reference":"edk2-aarch64-202308-52.oe2403sp4.noarch.rpm", "full_product_name":{ "product_id":"openEuler-24.03-LTS-SP4:edk2-aarch64-202308-52.oe2403sp4.noarch", "name":"edk2-aarch64-202308-52.oe2403sp4.noarch as a component of openEuler-24.03-LTS-SP4" }, "category":"default_component_of" }, { "relates_to_product_reference":"openEuler-24.03-LTS-SP4", "product_reference":"edk2-help-202308-52.oe2403sp4.noarch.rpm", "full_product_name":{ "product_id":"openEuler-24.03-LTS-SP4:edk2-help-202308-52.oe2403sp4.noarch", "name":"edk2-help-202308-52.oe2403sp4.noarch as a component of openEuler-24.03-LTS-SP4" }, "category":"default_component_of" }, { "relates_to_product_reference":"openEuler-24.03-LTS-SP4", "product_reference":"edk2-ovmf-202308-52.oe2403sp4.noarch.rpm", "full_product_name":{ "product_id":"openEuler-24.03-LTS-SP4:edk2-ovmf-202308-52.oe2403sp4.noarch", "name":"edk2-ovmf-202308-52.oe2403sp4.noarch as a component of openEuler-24.03-LTS-SP4" }, "category":"default_component_of" }, { "relates_to_product_reference":"openEuler-24.03-LTS-SP4", "product_reference":"python3-edk2-devel-202308-52.oe2403sp4.noarch.rpm", "full_product_name":{ "product_id":"openEuler-24.03-LTS-SP4:python3-edk2-devel-202308-52.oe2403sp4.noarch", "name":"python3-edk2-devel-202308-52.oe2403sp4.noarch as a component of openEuler-24.03-LTS-SP4" }, "category":"default_component_of" } ] }, "vulnerabilities":[ { "cve":"CVE-2026-63072", "notes":[ { "text":"Issue summary: OpenSSL CMS decryption sizes the key-unwrap output buffer based\non querying the unwrapped key size, but the AES-WRAP-PAD unwrap primitive\ncan write and cleanse more bytes than that query reports, causing an 8-byte\nout-of-bounds heap write.\n\nImpact summary: An attacker who supplies a crafted CMS message can trigger a\ndeterministic 8-byte out-of-bounds heap write when the victim decrypts it\nwith CMS_decrypt(), corrupting the heap and typically resulting in a Denial\nof Service.\n\nCWE: CWE-787: Out-of-bounds Write\n\nDescription: The key-wrap OID is potentially attacker-controlled on the wire.\nCMS unwrapping allows both id-aesNNN-wrap-pad and id-aesNNN-wrap ciphers.\nAn attacker can take a legitimate message and change a single OID byte to\nselect the padded variant while leaving the message otherwise valid. Since\nthe unwrap key is derived from the recipient's private operation (ECDH key\nagreement or ML-KEM decapsulation), the RFC 5649 integrity check cannot\npass, and the decryption fails with integrity failure.\n\nThe write is a fixed-size (8-byte), fixed-value (zero) heap overflow\nimmediately past the allocation, requires no special configuration, and is\nreachable from the public CMS_decrypt() function. The consequence is\na heap corruption leading to a Denial of Service. The fix in the CMS code\nsizes the unwrap output buffer for the worst case so a failed unwrap cannot\nwrite past the allocation.\n\nFIPS impact: no\n\nAs the CMS code lives outside the FIPS module boundary, no FIPS\nmodules are affected by this CVE.", "category":"description", "title":"Vulnerability Description" } ], "product_status":{ "fixed":[ "openEuler-24.03-LTS-SP4:edk2-debuginfo-202308-52.oe2403sp4.aarch64", "openEuler-24.03-LTS-SP4:edk2-debugsource-202308-52.oe2403sp4.aarch64", "openEuler-24.03-LTS-SP4:edk2-devel-202308-52.oe2403sp4.aarch64", "openEuler-24.03-LTS-SP4:edk2-debuginfo-202308-52.oe2403sp4.x86_64", "openEuler-24.03-LTS-SP4:edk2-debugsource-202308-52.oe2403sp4.x86_64", "openEuler-24.03-LTS-SP4:edk2-devel-202308-52.oe2403sp4.x86_64", "openEuler-24.03-LTS-SP4:edk2-202308-52.oe2403sp4.src", "openEuler-24.03-LTS-SP4:edk2-aarch64-202308-52.oe2403sp4.noarch", "openEuler-24.03-LTS-SP4:edk2-help-202308-52.oe2403sp4.noarch", "openEuler-24.03-LTS-SP4:edk2-ovmf-202308-52.oe2403sp4.noarch", "openEuler-24.03-LTS-SP4:python3-edk2-devel-202308-52.oe2403sp4.noarch" ] }, "remediations":[ { "product_ids":[ "openEuler-24.03-LTS-SP4:edk2-debuginfo-202308-52.oe2403sp4.aarch64", "openEuler-24.03-LTS-SP4:edk2-debugsource-202308-52.oe2403sp4.aarch64", "openEuler-24.03-LTS-SP4:edk2-devel-202308-52.oe2403sp4.aarch64", "openEuler-24.03-LTS-SP4:edk2-debuginfo-202308-52.oe2403sp4.x86_64", "openEuler-24.03-LTS-SP4:edk2-debugsource-202308-52.oe2403sp4.x86_64", "openEuler-24.03-LTS-SP4:edk2-devel-202308-52.oe2403sp4.x86_64", "openEuler-24.03-LTS-SP4:edk2-202308-52.oe2403sp4.src", "openEuler-24.03-LTS-SP4:edk2-aarch64-202308-52.oe2403sp4.noarch", "openEuler-24.03-LTS-SP4:edk2-help-202308-52.oe2403sp4.noarch", "openEuler-24.03-LTS-SP4:edk2-ovmf-202308-52.oe2403sp4.noarch", "openEuler-24.03-LTS-SP4:python3-edk2-devel-202308-52.oe2403sp4.noarch" ], "details":"edk2 security update", "category":"vendor_fix", "url":"https://www.openeuler.org/zh/security/security-bulletins/detail/?id=openEuler-SA-2026-3858" } ], "scores":[ { "cvss_v3":{ "baseSeverity":"HIGH", "baseScore":7.5, "vectorString":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H", "version":"3.1" }, "products":[ "openEuler-24.03-LTS-SP4:edk2-debuginfo-202308-52.oe2403sp4.aarch64", "openEuler-24.03-LTS-SP4:edk2-debugsource-202308-52.oe2403sp4.aarch64", "openEuler-24.03-LTS-SP4:edk2-devel-202308-52.oe2403sp4.aarch64", "openEuler-24.03-LTS-SP4:edk2-debuginfo-202308-52.oe2403sp4.x86_64", "openEuler-24.03-LTS-SP4:edk2-debugsource-202308-52.oe2403sp4.x86_64", "openEuler-24.03-LTS-SP4:edk2-devel-202308-52.oe2403sp4.x86_64", "openEuler-24.03-LTS-SP4:edk2-202308-52.oe2403sp4.src", "openEuler-24.03-LTS-SP4:edk2-aarch64-202308-52.oe2403sp4.noarch", "openEuler-24.03-LTS-SP4:edk2-help-202308-52.oe2403sp4.noarch", "openEuler-24.03-LTS-SP4:edk2-ovmf-202308-52.oe2403sp4.noarch", "openEuler-24.03-LTS-SP4:python3-edk2-devel-202308-52.oe2403sp4.noarch" ] } ], "threats":[ { "details":"High", "category":"impact" } ], "title":"CVE-2026-63072" } ] }