{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2022-4450", "assignerOrgId": "3a12439a-ef3a-4c79-92e6-6081a721f1e5", "state": "PUBLISHED", "assignerShortName": "openssl", "dateReserved": "2022-12-13T13:38:08.598Z", "datePublished": "2023-02-08T19:04:04.874Z", "dateUpdated": "2025-11-04T19:14:13.257Z"}, "containers": {"cna": {"affected": [{"defaultStatus": "unaffected", "product": "OpenSSL", "vendor": "OpenSSL", "versions": [{"lessThan": "3.0.8", "status": "affected", "version": "3.0.0", "versionType": "semver"}, {"lessThan": "1.1.1t", "status": "affected", "version": "1.1.1", "versionType": "custom"}]}], "credits": [{"lang": "en", "type": "finder", "user": "00000000-0000-4000-9000-000000000000", "value": "CarpetFuzz"}, {"lang": "en", "type": "reporter", "user": "00000000-0000-4000-9000-000000000000", "value": "Dawei Wang"}, {"lang": "en", "type": "reporter", "user": "00000000-0000-4000-9000-000000000000", "value": "Marc Sch\u00f6nefeld"}, {"lang": "en", "type": "remediation developer", "user": "00000000-0000-4000-9000-000000000000", "value": "Kurt Roeckx"}, {"lang": "en", "type": "remediation developer", "user": "00000000-0000-4000-9000-000000000000", "value": "Matt Caswell"}], "datePublic": "2023-02-07T00:00:00.000Z", "descriptions": [{"lang": "en", "supportingMedia": [{"base64": false, "type": "text/html", "value": "The function PEM_read_bio_ex() reads a PEM file from a BIO and parses and<br>decodes the \"name\" (e.g. \"CERTIFICATE\"), any header data and the payload data.<br>If the function succeeds then the \"name_out\", \"header\" and \"data\" arguments are<br>populated with pointers to buffers containing the relevant decoded data. 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The\ncaller is responsible for freeing those buffers. It is possible to construct a\nPEM file that results in 0 bytes of payload data. In this case PEM_read_bio_ex()\nwill return a failure code but will populate the header argument with a pointer\nto a buffer that has already been freed. If the caller also frees this buffer\nthen a double free will occur. This will most likely lead to a crash. This\ncould be exploited by an attacker who has the ability to supply malicious PEM\nfiles for parsing to achieve a denial of service attack.\n\nThe functions PEM_read_bio() and PEM_read() are simple wrappers around\nPEM_read_bio_ex() and therefore these functions are also directly affected.\n\nThese functions are also called indirectly by a number of other OpenSSL\nfunctions including PEM_X509_INFO_read_bio_ex() and\nSSL_CTX_use_serverinfo_file() which are also vulnerable. Some OpenSSL internal\nuses of these functions are not vulnerable because the caller does not free the\nheader argument if PEM_read_bio_ex() returns a failure code. These locations\ninclude the PEM_read_bio_TYPE() functions as well as the decoders introduced in\nOpenSSL 3.0.\n\nThe OpenSSL asn1parse command line application is also impacted by this issue.", "supportingMedia": [{"type": "text/html", "value": "The function PEM_read_bio_ex() reads a PEM file from a BIO and parses and<br>decodes the \"name\" (e.g. \"CERTIFICATE\"), any header data and the payload data.<br>If the function succeeds then the \"name_out\", \"header\" and \"data\" arguments are<br>populated with pointers to buffers containing the relevant decoded data. The<br>caller is responsible for freeing those buffers. It is possible to construct a<br>PEM file that results in 0 bytes of payload data. In this case PEM_read_bio_ex()<br>will return a failure code but will populate the header argument with a pointer<br>to a buffer that has already been freed. If the caller also frees this buffer<br>then a double free will occur. This will most likely lead to a crash. This<br>could be exploited by an attacker who has the ability to supply malicious PEM<br>files for parsing to achieve a denial of service attack.<br><br>The functions PEM_read_bio() and PEM_read() are simple wrappers around<br>PEM_read_bio_ex() and therefore these functions are also directly affected.<br><br>These functions are also called indirectly by a number of other OpenSSL<br>functions including PEM_X509_INFO_read_bio_ex() and<br>SSL_CTX_use_serverinfo_file() which are also vulnerable. Some OpenSSL internal<br>uses of these functions are not vulnerable because the caller does not free the<br>header argument if PEM_read_bio_ex() returns a failure code. These locations<br>include the PEM_read_bio_TYPE() functions as well as the decoders introduced in<br>OpenSSL 3.0.<br><br><div>The OpenSSL asn1parse command line application is also impacted by this issue.</div><br>", "base64": false}]}], "problemTypes": [{"descriptions": [{"lang": "en", "description": "double-free"}]}], "providerMetadata": {"orgId": "3a12439a-ef3a-4c79-92e6-6081a721f1e5", "shortName": "openssl", "dateUpdated": "2024-02-04T09:06:50.535Z"}}}, "cveMetadata": {"cveId": "CVE-2022-4450", "state": "PUBLISHED", "dateUpdated": "2025-11-04T19:14:13.257Z", "dateReserved": "2022-12-13T13:38:08.598Z", "assignerOrgId": "3a12439a-ef3a-4c79-92e6-6081a721f1e5", "datePublished": "2023-02-08T19:04:04.874Z", "assignerShortName": "openssl"}, "dataVersion": "5.2"}

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Some OpenSSL internal\nuses of these functions are not vulnerable because the caller does not free the\nheader argument if PEM_read_bio_ex() returns a failure code. These locations\ninclude the PEM_read_bio_TYPE() functions as well as the decoders introduced in\nOpenSSL 3.0.\n\nThe OpenSSL asn1parse command line application is also impacted by this issue."}], "id": "CVE-2022-4450", "lastModified": "2025-11-04T20:16:15.060", "metrics": {"cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "HIGH", "baseScore": 7.5, "baseSeverity": "HIGH", "confidentialityImpact": "NONE", "integrityImpact": "NONE", "privilegesRequired": "NONE", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H", "version": "3.1"}, "exploitabilityScore": 3.9, "impactScore": 3.6, "source": "nvd@nist.gov", "type": "Primary"}, {"cvssData": {"attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "HIGH", "baseScore": 7.5, "baseSeverity": "HIGH", "confidentialityImpact": "NONE", "integrityImpact": "NONE", "privilegesRequired": "NONE", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H", "version": "3.1"}, "exploitabilityScore": 3.9, "impactScore": 3.6, "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "type": "Secondary"}]}, "published": "2023-02-08T20:15:23.973", "references": [{"source": "openssl-security@openssl.org", "tags": ["Patch", "Vendor Advisory"], "url": "https://git.openssl.org/gitweb/?p=openssl.git;a=commitdiff;h=63bcf189be73a9cc1264059bed6f57974be74a83"}, {"source": "openssl-security@openssl.org", "tags": ["Patch", "Vendor Advisory"], "url": "https://git.openssl.org/gitweb/?p=openssl.git;a=commitdiff;h=bbcf509bd046b34cca19c766bbddc31683d0858b"}, {"source": "openssl-security@openssl.org", "url": "https://security.gentoo.org/glsa/202402-08"}, {"source": "openssl-security@openssl.org", "tags": ["Vendor Advisory"], "url": "https://www.openssl.org/news/secadv/20230207.txt"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Patch", "Vendor Advisory"], "url": "https://git.openssl.org/gitweb/?p=openssl.git;a=commitdiff;h=63bcf189be73a9cc1264059bed6f57974be74a83"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Patch", "Vendor Advisory"], "url": "https://git.openssl.org/gitweb/?p=openssl.git;a=commitdiff;h=bbcf509bd046b34cca19c766bbddc31683d0858b"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "url": "https://psirt.global.sonicwall.com/vuln-detail/SNWLID-2023-0003"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "url": "https://security.gentoo.org/glsa/202402-08"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Vendor Advisory"], "url": "https://www.openssl.org/news/secadv/20230207.txt"}], "sourceIdentifier": "openssl-security@openssl.org", "vulnStatus": "Modified", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-415"}], "source": "nvd@nist.gov", "type": "Primary"}, {"description": [{"lang": "en", "value": "CWE-415"}], "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "type": "Secondary"}]}

{"affected_release": [{"advisory": "RHSA-2023:3355", "cpe": "cpe:/a:redhat:jboss_core_services:1", "package": "openssl", "product_name": "JBCS httpd 2.4.51.sp2", "release_date": "2023-06-05T00:00:00Z"}, {"advisory": "RHSA-2023:3354", "cpe": "cpe:/a:redhat:jboss_core_services:1::el8", "package": "jbcs-httpd24-openssl-1:1.1.1k-14.el8jbcs", "product_name": "JBoss Core Services for RHEL 8", "release_date": "2023-06-05T00:00:00Z"}, {"advisory": "RHSA-2023:3354", "cpe": "cpe:/a:redhat:jboss_core_services:1::el7", "package": "jbcs-httpd24-openssl-1:1.1.1k-14.el7jbcs", "product_name": "JBoss Core Services on RHEL 7", "release_date": "2023-06-05T00:00:00Z"}, {"advisory": "RHSA-2023:2932", "cpe": "cpe:/a:redhat:enterprise_linux:8", "package": "edk2-0:20220126gitbb1bba3d77-4.el8", "product_name": "Red Hat Enterprise Linux 8", "release_date": "2023-05-16T00:00:00Z"}, {"advisory": "RHSA-2023:1405", "cpe": "cpe:/o:redhat:enterprise_linux:8", "package": "openssl-1:1.1.1k-9.el8_7", "product_name": "Red Hat Enterprise Linux 8", "release_date": "2023-03-22T00:00:00Z"}, {"advisory": "RHSA-2023:3408", "cpe": "cpe:/o:redhat:rhel_eus:8.6", "package": "openssl-1:1.1.1k-9.el8_6", "product_name": "Red Hat Enterprise Linux 8.6 Extended Update Support", "release_date": "2023-05-31T00:00:00Z"}, {"advisory": "RHSA-2023:0946", "cpe": "cpe:/a:redhat:enterprise_linux:9", "package": "openssl-1:3.0.1-47.el9_1", "product_name": "Red Hat Enterprise Linux 9", "release_date": "2023-02-28T00:00:00Z"}, {"advisory": "RHSA-2023:2165", "cpe": "cpe:/a:redhat:enterprise_linux:9", "package": "edk2-0:20221207gitfff6d81270b5-9.el9_2", "product_name": "Red Hat Enterprise Linux 9", "release_date": "2023-05-09T00:00:00Z"}, {"advisory": "RHSA-2023:0946", "cpe": "cpe:/o:redhat:enterprise_linux:9", "package": "openssl-1:3.0.1-47.el9_1", "product_name": "Red Hat Enterprise Linux 9", "release_date": "2023-02-28T00:00:00Z"}, {"advisory": "RHSA-2023:1199", "cpe": "cpe:/a:redhat:rhel_eus:9.0", "package": "openssl-1:3.0.1-46.el9_0", "product_name": "Red Hat Enterprise Linux 9.0 Extended Update Support", "release_date": "2023-03-14T00:00:00Z"}, {"advisory": "RHSA-2023:3421", "cpe": "cpe:/a:redhat:jboss_enterprise_web_server:5.7", "package": "openssl", "product_name": "Red Hat JBoss Web Server 5", "release_date": "2023-06-05T00:00:00Z"}, {"advisory": "RHSA-2023:3420", "cpe": "cpe:/a:redhat:jboss_enterprise_web_server:5.7::el7", "package": "jws5-tomcat-native-0:1.2.31-14.redhat_14.el7jws", "product_name": "Red Hat JBoss Web Server 5.7 on RHEL 7", "release_date": "2023-06-05T00:00:00Z"}, {"advisory": "RHSA-2023:3420", "cpe": "cpe:/a:redhat:jboss_enterprise_web_server:5.7::el8", "package": "jws5-tomcat-native-0:1.2.31-14.redhat_14.el8jws", "product_name": "Red Hat JBoss Web Server 5.7 on RHEL 8", "release_date": "2023-06-05T00:00:00Z"}, {"advisory": "RHSA-2023:3420", "cpe": "cpe:/a:redhat:jboss_enterprise_web_server:5.7::el9", "package": "jws5-tomcat-native-0:1.2.31-14.redhat_14.el9jws", "product_name": "Red Hat JBoss Web Server 5.7 on RHEL 9", "release_date": "2023-06-05T00:00:00Z"}], "bugzilla": {"description": "openssl: double free after calling PEM_read_bio_ex", "id": "2164494", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2164494"}, "csaw": false, "cvss3": {"cvss3_base_score": "7.5", "cvss3_scoring_vector": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H", "status": "verified"}, "cwe": "CWE-415", "details": ["The function PEM_read_bio_ex() reads a PEM file from a BIO and parses and\ndecodes the \"name\" (e.g. \"CERTIFICATE\"), any header data and the payload data.\nIf the function succeeds then the \"name_out\", \"header\" and \"data\" arguments are\npopulated with pointers to buffers containing the relevant decoded data. The\ncaller is responsible for freeing those buffers. It is possible to construct a\nPEM file that results in 0 bytes of payload data. In this case PEM_read_bio_ex()\nwill return a failure code but will populate the header argument with a pointer\nto a buffer that has already been freed. If the caller also frees this buffer\nthen a double free will occur. This will most likely lead to a crash. This\ncould be exploited by an attacker who has the ability to supply malicious PEM\nfiles for parsing to achieve a denial of service attack.\nThe functions PEM_read_bio() and PEM_read() are simple wrappers around\nPEM_read_bio_ex() and therefore these functions are also directly affected.\nThese functions are also called indirectly by a number of other OpenSSL\nfunctions including PEM_X509_INFO_read_bio_ex() and\nSSL_CTX_use_serverinfo_file() which are also vulnerable. Some OpenSSL internal\nuses of these functions are not vulnerable because the caller does not free the\nheader argument if PEM_read_bio_ex() returns a failure code. These locations\ninclude the PEM_read_bio_TYPE() functions as well as the decoders introduced in\nOpenSSL 3.0.\nThe OpenSSL asn1parse command line application is also impacted by this issue.", "A double-free vulnerability was found in OpenSSL's PEM_read_bio_ex function. The function PEM_read_bio_ex() reads a PEM file from a BIO and parses and decodes the \"name\" (for example, \"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. Constructing a PEM file that results in 0 bytes of payload data is possible. In this case, PEM_read_bio_ex() will return a failure code but will populate the header argument with a pointer to a freed buffer. A double-free will occur if the caller also frees this buffer. This will most likely lead to a crash. This could be exploited by an attacker who can supply malicious PEM files for parsing to achieve a denial of service attack."], "name": "CVE-2022-4450", "package_state": [{"cpe": "cpe:/o:redhat:enterprise_linux:6", "fix_state": "Not affected", "package_name": "openssl", "product_name": "Red Hat Enterprise Linux 6"}, {"cpe": "cpe:/o:redhat:enterprise_linux:7", "fix_state": "Not affected", "package_name": "openssl", "product_name": "Red Hat Enterprise Linux 7"}, {"cpe": "cpe:/o:redhat:enterprise_linux:7", "fix_state": "Not affected", "package_name": "ovmf", "product_name": "Red Hat Enterprise Linux 7"}, {"cpe": "cpe:/o:redhat:enterprise_linux:8", "fix_state": "Not affected", "package_name": "compat-openssl10", "product_name": "Red Hat Enterprise Linux 8"}, {"cpe": "cpe:/o:redhat:enterprise_linux:8", "fix_state": "Not affected", "package_name": "shim", "product_name": "Red Hat Enterprise Linux 8"}, {"cpe": "cpe:/o:redhat:enterprise_linux:9", "fix_state": "Will not fix", "package_name": "compat-openssl11", "product_name": "Red Hat Enterprise Linux 9"}, {"cpe": "cpe:/o:redhat:enterprise_linux:9", "fix_state": "Not affected", "package_name": "shim", "product_name": "Red Hat Enterprise Linux 9"}, {"cpe": "cpe:/a:redhat:jboss_enterprise_web_server:3", "fix_state": "Out of support scope", "package_name": "openssl", "product_name": "Red Hat JBoss Web Server 3"}], "public_date": "2023-02-07T00:00:00Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2022-4450\nhttps://nvd.nist.gov/vuln/detail/CVE-2022-4450\nhttps://www.openssl.org/news/secadv/20230207.txt"], "statement": "This flaw is rated as having a Moderate impact as it is less easily exploited and is only vulnerable in unlikely configurations. Additionally, the upstream advisory (linked in External References) also rates it as Moderate.\nThe versions of `shim` as shipped with Red Hat Enterprise Linux 8 and 9 are shipping OpenSSL 1.1.1 and 1.0.2, which do not contain the incorrect code, so those are not affected by this CVE.", "threat_severity": "Moderate"}

{}