{ "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: A CMP client that requests certificate revocation on the basis\nof a PKCS#10 CSR may dereference a NULL pointer and terminate abnormally when\nprocessing a crafted revocation response. \n\nImpact summary: The NULL pointer dereference happens on a read which \nleads to a crash and a Denial of Service for the affected client application.\n\nCWE: CWE-476: NULL-pointer dereference\n\nDescription: A CMP client revoking a certificate has to tell the server which\ncertificate to revoke, and may do so by supplying a PKCS#10 CSR instead of the\ncertificate itself or its issuer name and serial number. This is\n'openssl cmp -cmd rr -csr ' on the command line, or\nOSSL_CMP_exec_RR_ses() with the certificate supplied via\nOSSL_CMP_CTX_set1_p10CSR() through the API.\n\nA CSR does not contain the issuer name and serial number of the certificate,\nso the client does not send them. A server may optionally name the\ncertificate it revoked in its response, and the client then compares that\nname against what it sent. Having sent neither an issuer name nor a serial\nnumber, it has nothing to compare against, and a server returning a specially\ncrafted name causes the client to read from a NULL pointer and crash.\n\nThe revocation response is checked for valid message protection before\nthe affected code is reached, so an attacker must be a malicious or\ncompromised CMP server, or a man-in-the-middle in possession of the\nsecret used for message protection. Clients that identify the certificate\nto be revoked by a certificate or by issuer and serial number rather\nthan by a PKCS#10 CSR are not affected.\n\nFIPS impact: no\nNo FIPS modules are affected by this issue, as the CMP protocol\nimplementation is outside the OpenSSL FIPS module boundary.", "category":"general", "title":"Synopsis" } ], "publisher":null, "references":[ { "summary":"nvd cve", "category":"external", "url":"https://nvd.nist.gov/vuln/detail/CVE-2026-75805" }, { "summary":"CVE-2026-75805 vex file", "category":"self", "url":"https://repo.openeuler.org/security/data/csaf/cve/2026/csaf-openeuler-cve-2026-75805.json" }, { "summary":"openEuler-SA-2026-4419", "category":"self", "url":"https://www.openeuler.org/zh/security/security-bulletins/detail/?id=openEuler-SA-2026-4419" }, { "summary":"CVE-2026-75805", "category":"self", "url":"https://www.openeuler.org/en/security/cve/detail/?cveId=CVE-2026-75805&packageName=openssl" } ], "title":"openEuler cve CVE-2026-75805", "tracking":{ "initial_release_date":"2026-10-30T11:16:26+08:00", "revision_history":[ { "date":"2026-10-30T11:16:26+08:00", "summary":"Initial", "number":"1.0.0" } ], "generator":{ "date":"2026-10-30T11:16:26+08:00", "engine":{ "name":"openEuler CSAF Tool V1.0" } }, "current_release_date":"2026-10-30T11:16:26+08:00", "id":"CVE-2026-75805", "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":"openssl-3.5.6-8.oe2403sp4.aarch64.rpm", 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"name":"openssl-perl-3.5.6-8.oe2403sp4.x86_64 as a component of openEuler-24.03-LTS-SP4" }, "category":"default_component_of" }, { "relates_to_product_reference":"openEuler-24.03-LTS-SP4", "product_reference":"openssl-help-3.5.6-8.oe2403sp4.noarch.rpm", "full_product_name":{ "product_id":"openEuler-24.03-LTS-SP4:openssl-help-3.5.6-8.oe2403sp4.noarch", "name":"openssl-help-3.5.6-8.oe2403sp4.noarch as a component of openEuler-24.03-LTS-SP4" }, "category":"default_component_of" } ] }, "vulnerabilities":[ { "cve":"CVE-2026-75805", "notes":[ { "text":"Issue summary: A CMP client that requests certificate revocation on the basis\nof a PKCS#10 CSR may dereference a NULL pointer and terminate abnormally when\nprocessing a crafted revocation response. \n\nImpact summary: The NULL pointer dereference happens on a read which \nleads to a crash and a Denial of Service for the affected client application.\n\nCWE: CWE-476: NULL-pointer dereference\n\nDescription: A CMP client revoking a certificate has to tell the server which\ncertificate to revoke, and may do so by supplying a PKCS#10 CSR instead of the\ncertificate itself or its issuer name and serial number. This is\n'openssl cmp -cmd rr -csr ' on the command line, or\nOSSL_CMP_exec_RR_ses() with the certificate supplied via\nOSSL_CMP_CTX_set1_p10CSR() through the API.\n\nA CSR does not contain the issuer name and serial number of the certificate,\nso the client does not send them. A server may optionally name the\ncertificate it revoked in its response, and the client then compares that\nname against what it sent. Having sent neither an issuer name nor a serial\nnumber, it has nothing to compare against, and a server returning a specially\ncrafted name causes the client to read from a NULL pointer and crash.\n\nThe revocation response is checked for valid message protection before\nthe affected code is reached, so an attacker must be a malicious or\ncompromised CMP server, or a man-in-the-middle in possession of the\nsecret used for message protection. Clients that identify the certificate\nto be revoked by a certificate or by issuer and serial number rather\nthan by a PKCS#10 CSR are not affected.\n\nFIPS impact: no\nNo FIPS modules are affected by this issue, as the CMP protocol\nimplementation is outside the OpenSSL FIPS module boundary.", "category":"description", "title":"Vulnerability Description" } ], "product_status":{ "fixed":[ "openEuler-24.03-LTS-SP4:openssl-3.5.6-8.oe2403sp4.aarch64", "openEuler-24.03-LTS-SP4:openssl-debuginfo-3.5.6-8.oe2403sp4.aarch64", "openEuler-24.03-LTS-SP4:openssl-debugsource-3.5.6-8.oe2403sp4.aarch64", "openEuler-24.03-LTS-SP4:openssl-devel-3.5.6-8.oe2403sp4.aarch64", "openEuler-24.03-LTS-SP4:openssl-libs-3.5.6-8.oe2403sp4.aarch64", "openEuler-24.03-LTS-SP4:openssl-perl-3.5.6-8.oe2403sp4.aarch64", "openEuler-24.03-LTS-SP4:openssl-3.5.6-8.oe2403sp4.src", "openEuler-24.03-LTS-SP4:openssl-3.5.6-8.oe2403sp4.x86_64", "openEuler-24.03-LTS-SP4:openssl-debuginfo-3.5.6-8.oe2403sp4.x86_64", "openEuler-24.03-LTS-SP4:openssl-debugsource-3.5.6-8.oe2403sp4.x86_64", "openEuler-24.03-LTS-SP4:openssl-devel-3.5.6-8.oe2403sp4.x86_64", "openEuler-24.03-LTS-SP4:openssl-libs-3.5.6-8.oe2403sp4.x86_64", "openEuler-24.03-LTS-SP4:openssl-perl-3.5.6-8.oe2403sp4.x86_64", "openEuler-24.03-LTS-SP4:openssl-help-3.5.6-8.oe2403sp4.noarch" ] }, "remediations":[ { "product_ids":[ "openEuler-24.03-LTS-SP4:openssl-3.5.6-8.oe2403sp4.aarch64", "openEuler-24.03-LTS-SP4:openssl-debuginfo-3.5.6-8.oe2403sp4.aarch64", "openEuler-24.03-LTS-SP4:openssl-debugsource-3.5.6-8.oe2403sp4.aarch64", "openEuler-24.03-LTS-SP4:openssl-devel-3.5.6-8.oe2403sp4.aarch64", "openEuler-24.03-LTS-SP4:openssl-libs-3.5.6-8.oe2403sp4.aarch64", "openEuler-24.03-LTS-SP4:openssl-perl-3.5.6-8.oe2403sp4.aarch64", "openEuler-24.03-LTS-SP4:openssl-3.5.6-8.oe2403sp4.src", "openEuler-24.03-LTS-SP4:openssl-3.5.6-8.oe2403sp4.x86_64", "openEuler-24.03-LTS-SP4:openssl-debuginfo-3.5.6-8.oe2403sp4.x86_64", "openEuler-24.03-LTS-SP4:openssl-debugsource-3.5.6-8.oe2403sp4.x86_64", "openEuler-24.03-LTS-SP4:openssl-devel-3.5.6-8.oe2403sp4.x86_64", "openEuler-24.03-LTS-SP4:openssl-libs-3.5.6-8.oe2403sp4.x86_64", "openEuler-24.03-LTS-SP4:openssl-perl-3.5.6-8.oe2403sp4.x86_64", "openEuler-24.03-LTS-SP4:openssl-help-3.5.6-8.oe2403sp4.noarch" ], "details":"openssl security update", "category":"vendor_fix", "url":"https://www.openeuler.org/zh/security/security-bulletins/detail/?id=openEuler-SA-2026-4419" } ], "scores":[ { "cvss_v3":{ "baseSeverity":"MEDIUM", "baseScore":5.3, "vectorString":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L", "version":"3.1" }, "products":[ "openEuler-24.03-LTS-SP4:openssl-3.5.6-8.oe2403sp4.aarch64", "openEuler-24.03-LTS-SP4:openssl-debuginfo-3.5.6-8.oe2403sp4.aarch64", "openEuler-24.03-LTS-SP4:openssl-debugsource-3.5.6-8.oe2403sp4.aarch64", "openEuler-24.03-LTS-SP4:openssl-devel-3.5.6-8.oe2403sp4.aarch64", "openEuler-24.03-LTS-SP4:openssl-libs-3.5.6-8.oe2403sp4.aarch64", "openEuler-24.03-LTS-SP4:openssl-perl-3.5.6-8.oe2403sp4.aarch64", "openEuler-24.03-LTS-SP4:openssl-3.5.6-8.oe2403sp4.src", "openEuler-24.03-LTS-SP4:openssl-3.5.6-8.oe2403sp4.x86_64", "openEuler-24.03-LTS-SP4:openssl-debuginfo-3.5.6-8.oe2403sp4.x86_64", "openEuler-24.03-LTS-SP4:openssl-debugsource-3.5.6-8.oe2403sp4.x86_64", "openEuler-24.03-LTS-SP4:openssl-devel-3.5.6-8.oe2403sp4.x86_64", "openEuler-24.03-LTS-SP4:openssl-libs-3.5.6-8.oe2403sp4.x86_64", "openEuler-24.03-LTS-SP4:openssl-perl-3.5.6-8.oe2403sp4.x86_64", "openEuler-24.03-LTS-SP4:openssl-help-3.5.6-8.oe2403sp4.noarch" ] } ], "threats":[ { "details":"Medium", "category":"impact" } ], "title":"CVE-2026-75805" } ] }