{"api_version":"1","generated_at":"2026-04-22T23:09:10+00:00","cve":"CVE-2022-4450","urls":{"html":"https://cve.report/CVE-2022-4450","api":"https://cve.report/api/cve/CVE-2022-4450.json","docs":"https://cve.report/api","cve_org":"https://www.cve.org/CVERecord?id=CVE-2022-4450","nvd":"https://nvd.nist.gov/vuln/detail/CVE-2022-4450"},"summary":{"title":"CVE-2022-4450","description":"The function PEM_read_bio_ex() reads a PEM file from a BIO and parses and decodes the \"name\" (e.g. \"CERTIFICATE\"), any header data and the payload data. If the function succeeds then the \"name_out\", \"header\" and \"data\" arguments are populated with pointers to buffers containing the relevant decoded data. The caller is responsible for freeing those buffers. It is possible to construct a PEM file that results in 0 bytes of payload data. In this case PEM_read_bio_ex() will return a failure code but will populate the header argument with a pointer to a buffer that has already been freed. If the caller also frees this buffer then a double free will occur. This will most likely lead to a crash. This could be exploited by an attacker who has the ability to supply malicious PEM files for parsing to achieve a denial of service attack. The functions PEM_read_bio() and PEM_read() are simple wrappers around PEM_read_bio_ex() and therefore these functions are also directly affected. These functions are also called indirectly by a number of other OpenSSL functions including PEM_X509_INFO_read_bio_ex() and SSL_CTX_use_serverinfo_file() which are also vulnerable. Some OpenSSL internal uses of these functions are not vulnerable because the caller does not free the header argument if PEM_read_bio_ex() returns a failure code. These locations include the PEM_read_bio_TYPE() functions as well as the decoders introduced in OpenSSL 3.0. The OpenSSL asn1parse command line application is also impacted by this issue.","state":"PUBLIC","assigner":"openssl-security@openssl.org","published_at":"2023-02-08 20:15:00","updated_at":"2024-02-04 09:15:00"},"problem_types":["CWE-415"],"metrics":[],"references":[{"url":"https://git.openssl.org/gitweb/?p=openssl.git;a=commitdiff;h=63bcf189be73a9cc1264059bed6f57974be74a83","name":"https://git.openssl.org/gitweb/?p=openssl.git;a=commitdiff;h=63bcf189be73a9cc1264059bed6f57974be74a83","refsource":"MISC","tags":[],"title":"git.openssl.org Git - openssl.git/commitdiff","mime":"text/xml","httpstatus":"200","archivestatus":"404"},{"url":"https://www.openssl.org/news/secadv/20230207.txt","name":"https://www.openssl.org/news/secadv/20230207.txt","refsource":"MISC","tags":[],"title":"","mime":"text/plain","httpstatus":"200","archivestatus":"200"},{"url":"https://security.gentoo.org/glsa/202402-08","name":"https://security.gentoo.org/glsa/202402-08","refsource":"","tags":[],"title":"OpenSSL: Multiple Vulnerabilities (GLSA 202402-08) — Gentoo security","mime":"text/html","httpstatus":"200","archivestatus":"200"},{"url":"https://git.openssl.org/gitweb/?p=openssl.git;a=commitdiff;h=bbcf509bd046b34cca19c766bbddc31683d0858b","name":"https://git.openssl.org/gitweb/?p=openssl.git;a=commitdiff;h=bbcf509bd046b34cca19c766bbddc31683d0858b","refsource":"MISC","tags":[],"title":"git.openssl.org Git - openssl.git/commitdiff","mime":"text/xml","httpstatus":"200","archivestatus":"404"},{"url":"https://www.cve.org/CVERecord?id=CVE-2022-4450","name":"CVE Program record","refsource":"CVE.ORG","tags":["canonical"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2022-4450","name":"NVD vulnerability detail","refsource":"NVD","tags":["canonical","analysis"]}],"affected":[],"timeline":[],"solutions":[],"workarounds":[],"exploits":[],"credits":[],"nvd_cpes":[{"cve_year":"2022","cve_id":"4450","vulnerable":"1","versionEndIncluding":"","cpe1":"cpe","cpe2":"2.3","cpe3":"a","cpe4":"openssl","cpe5":"openssl","cpe6":"*","cpe7":"*","cpe8":"*","cpe9":"*","cpe10":"*","cpe11":"*","cpe12":"*","cpe13":"*"},{"cve_year":"2022","cve_id":"4450","vulnerable":"1","versionEndIncluding":"","cpe1":"cpe","cpe2":"2.3","cpe3":"a","cpe4":"stormshield","cpe5":"stormshield_network_security","cpe6":"*","cpe7":"*","cpe8":"*","cpe9":"*","cpe10":"*","cpe11":"*","cpe12":"*","cpe13":"*"}],"vendor_comments":[],"enrichments":{"kev":null,"epss":null,"legacy_qids":[{"cve":"CVE-2022-4450","qid":"160481","title":"Oracle Enterprise Linux Security Update for Open Secure Sockets Layer (OpenSSL) (ELSA-2023-0946)"},{"cve":"CVE-2022-4450","qid":"160492","title":"Oracle Enterprise Linux Security Update for Open Secure Sockets 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If the function succeeds then the \"name_out\", \"header\" and \"data\" arguments are populated with pointers to buffers containing the relevant decoded data. The caller is responsible for freeing those buffers. It is possible to construct a PEM file that results in 0 bytes of payload data. In this case PEM_read_bio_ex() will return a failure code but will populate the header argument with a pointer to a buffer that has already been freed. If the caller also frees this buffer then a double free will occur. This will most likely lead to a crash. This could be exploited by an attacker who has the ability to supply malicious PEM files for parsing to achieve a denial of service attack. The functions PEM_read_bio() and PEM_read() are simple wrappers around PEM_read_bio_ex() and therefore these functions are also directly affected. These functions are also called indirectly by a number of other OpenSSL functions including PEM_X509_INFO_read_bio_ex() and SSL_CTX_use_serverinfo_file() which are also vulnerable. Some OpenSSL internal uses of these functions are not vulnerable because the caller does not free the header argument if PEM_read_bio_ex() returns a failure code. These locations include the PEM_read_bio_TYPE() functions as well as the decoders introduced in OpenSSL 3.0. The OpenSSL asn1parse command line application is also impacted by this issue."}]},"problemtype":{"problemtype_data":[{"description":[{"lang":"eng","value":"double-free"}]}]},"affects":{"vendor":{"vendor_data":[{"vendor_name":"OpenSSL","product":{"product_data":[{"product_name":"OpenSSL","version":{"version_data":[{"version_affected":"<","version_name":"3.0.0","version_value":"3.0.8"},{"version_affected":"<","version_name":"1.1.1","version_value":"1.1.1t"}]}}]}}]}},"references":{"reference_data":[{"url":"https://www.openssl.org/news/secadv/20230207.txt","refsource":"MISC","name":"https://www.openssl.org/news/secadv/20230207.txt"},{"url":"https://git.openssl.org/gitweb/?p=openssl.git;a=commitdiff;h=63bcf189be73a9cc1264059bed6f57974be74a83","refsource":"MISC","name":"https://git.openssl.org/gitweb/?p=openssl.git;a=commitdiff;h=63bcf189be73a9cc1264059bed6f57974be74a83"},{"url":"https://git.openssl.org/gitweb/?p=openssl.git;a=commitdiff;h=bbcf509bd046b34cca19c766bbddc31683d0858b","refsource":"MISC","name":"https://git.openssl.org/gitweb/?p=openssl.git;a=commitdiff;h=bbcf509bd046b34cca19c766bbddc31683d0858b"}]},"generator":{"engine":"Vulnogram 0.1.0-dev"},"source":{"discovery":"UNKNOWN"},"credits":[{"lang":"en","value":"CarpetFuzz"},{"lang":"en","value":"Dawei Wang"},{"lang":"en","value":"Marc Schönefeld"},{"lang":"en","value":"Kurt Roeckx"},{"lang":"en","value":"Matt Caswell"}]},"nvd":{"publishedDate":"2023-02-08 20:15:00","lastModifiedDate":"2024-02-04 09:15:00","problem_types":["CWE-415"],"metrics":{"baseMetricV3":{"cvssV3":{"version":"3.1","vectorString":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","attackVector":"NETWORK","attackComplexity":"LOW","privilegesRequired":"NONE","userInteraction":"NONE","scope":"UNCHANGED","confidentialityImpact":"NONE","integrityImpact":"NONE","availabilityImpact":"HIGH","baseScore":7.5,"baseSeverity":"HIGH"},"exploitabilityScore":3.9,"impactScore":3.6}},"configurations":{"CVE_data_version":"4.0","nodes":[{"operator":"OR","children":[],"cpe_match":[{"vulnerable":true,"cpe23Uri":"cpe:2.3:a:openssl:openssl:*:*:*:*:*:*:*:*","versionStartIncluding":"3.0.0","versionEndExcluding":"3.0.8","cpe_name":[]},{"vulnerable":true,"cpe23Uri":"cpe:2.3:a:openssl:openssl:*:*:*:*:*:*:*:*","versionStartIncluding":"1.1.1","versionEndExcluding":"1.1.1t","cpe_name":[]}]},{"operator":"OR","children":[],"cpe_match":[{"vulnerable":true,"cpe23Uri":"cpe:2.3:a:stormshield:stormshield_network_security:*:*:*:*:*:*:*:*","versionStartIncluding":"4.4.0","versionEndExcluding":"4.6.3","cpe_name":[]},{"vulnerable":true,"cpe23Uri":"cpe:2.3:a:stormshield:stormshield_network_security:*:*:*:*:*:*:*:*","versionStartIncluding":"4.0.0","versionEndExcluding":"4.3.16","cpe_name":[]}]}]}},"legacy_mitre":{"record":null,"notes":[]}}}