{"dataType": "CVE_RECORD", "cveMetadata": {"cveId": "CVE-2023-6237", "assignerOrgId": "3a12439a-ef3a-4c79-92e6-6081a721f1e5", "state": "PUBLISHED", "assignerShortName": "openssl", "dateReserved": "2023-11-21T10:16:34.346Z", "datePublished": "2024-04-25T06:27:26.990Z", "dateUpdated": "2024-11-01T14:28:51.338Z"}, "containers": {"cna": {"affected": [{"defaultStatus": "unaffected", "product": "OpenSSL", "vendor": "OpenSSL", "versions": [{"lessThan": "3.0.13", "status": "affected", "version": "3.0.0", "versionType": "semver"}, {"lessThan": "3.1.5", "status": "affected", "version": "3.1.0", "versionType": "semver"}, {"lessThan": "3.2.1", "status": "affected", "version": "3.2.0", "versionType": "semver"}]}], "credits": [{"lang": "en", "type": "finder", "user": "00000000-0000-4000-9000-000000000000", "value": "OSS-Fuzz"}, {"lang": "en", "type": "remediation developer", "user": "00000000-0000-4000-9000-000000000000", "value": "Tomas Mraz"}], "datePublic": "2024-01-15T00:00:00.000Z", "descriptions": [{"lang": "en", "supportingMedia": [{"base64": false, "type": "text/html", "value": "Issue summary: Checking excessively long invalid RSA public keys may take<br>a long time.<br><br>Impact summary: Applications that use the function EVP_PKEY_public_check()<br>to check RSA public keys may experience long delays. Where the key that<br>is being checked has been obtained from an untrusted source this may lead<br>to a Denial of Service.<br><br>When function EVP_PKEY_public_check() is called on RSA public keys,<br>a computation is done to confirm that the RSA modulus, n, is composite.<br>For valid RSA keys, n is a product of two or more large primes and this<br>computation completes quickly. However, if n is an overly large prime,<br>then this computation would take a long time.<br><br>An application that calls EVP_PKEY_public_check() and supplies an RSA key<br>obtained from an untrusted source could be vulnerable to a Denial of Service<br>attack.<br><br>The function EVP_PKEY_public_check() is not called from other OpenSSL<br>functions however it is called from the OpenSSL pkey command line<br>application. For that reason that application is also vulnerable if used<br>with the '-pubin' and '-check' options on untrusted data.<br><br>The OpenSSL SSL/TLS implementation is not affected by this issue.<br><br>The OpenSSL 3.0 and 3.1 FIPS providers are affected by this issue."}], "value": "Issue summary: Checking excessively long invalid RSA public keys may take\na long time.\n\nImpact summary: Applications that use the function EVP_PKEY_public_check()\nto check RSA public keys may experience long delays. Where the key that\nis being checked has been obtained from an untrusted source this may lead\nto a Denial of Service.\n\nWhen function EVP_PKEY_public_check() is called on RSA public keys,\na computation is done to confirm that the RSA modulus, n, is composite.\nFor valid RSA keys, n is a product of two or more large primes and this\ncomputation completes quickly. However, if n is an overly large prime,\nthen this computation would take a long time.\n\nAn application that calls EVP_PKEY_public_check() and supplies an RSA key\nobtained from an untrusted source could be vulnerable to a Denial of Service\nattack.\n\nThe function EVP_PKEY_public_check() is not called from other OpenSSL\nfunctions however it is called from the OpenSSL pkey command line\napplication. For that reason that application is also vulnerable if used\nwith the '-pubin' and '-check' options on untrusted data.\n\nThe OpenSSL SSL/TLS implementation is not affected by this issue.\n\nThe OpenSSL 3.0 and 3.1 FIPS providers are affected by this issue."}], "metrics": [{"format": "other", "other": {"content": {"text": "Low"}, "type": "https://www.openssl.org/policies/secpolicy.html"}}], "problemTypes": [{"descriptions": [{"cweId": "CWE-606", "description": "CWE-606 Unchecked Input for Loop Condition", "lang": "en", "type": "CWE"}]}], "providerMetadata": {"orgId": "3a12439a-ef3a-4c79-92e6-6081a721f1e5", "shortName": "openssl", "dateUpdated": "2024-10-14T14:55:56.955Z"}, "references": [{"name": "OpenSSL Advisory", "tags": ["vendor-advisory"], "url": "https://www.openssl.org/news/secadv/20240115.txt"}, {"name": "3.0.13 git commit", "tags": ["patch"], "url": "https://github.com/openssl/openssl/commit/18c02492138d1eb8b6548cb26e7b625fb2414a2a"}, {"name": "3.1.5 git commit", "tags": ["patch"], "url": "https://github.com/openssl/openssl/commit/a830f551557d3d66a84bbb18a5b889c640c36294"}, {"name": "3.2.1 git commit", "tags": ["patch"], "url": "https://github.com/openssl/openssl/commit/0b0f7abfb37350794a4b8960fafc292cd5d1b84d"}], "source": {"discovery": "UNKNOWN"}, "title": "Excessive time spent checking invalid RSA public keys", "x_generator": {"engine": "Vulnogram 0.1.0-dev"}}, "adp": [{"providerMetadata": {"orgId": "af854a3a-2127-422b-91ae-364da2661108", "shortName": "CVE", "dateUpdated": "2024-08-02T08:21:18.096Z"}, "title": "CVE Program Container", "references": [{"name": "OpenSSL Advisory", "tags": ["vendor-advisory", "x_transferred"], "url": "https://www.openssl.org/news/secadv/20240115.txt"}, {"name": "3.0.13 git commit", "tags": ["patch", "x_transferred"], "url": "https://github.com/openssl/openssl/commit/18c02492138d1eb8b6548cb26e7b625fb2414a2a"}, {"name": "3.1.5 git commit", "tags": ["patch", "x_transferred"], "url": "https://github.com/openssl/openssl/commit/a830f551557d3d66a84bbb18a5b889c640c36294"}, {"name": "3.2.1 git commit", "tags": ["patch", "x_transferred"], "url": "https://github.com/openssl/openssl/commit/0b0f7abfb37350794a4b8960fafc292cd5d1b84d"}, {"url": "http://www.openwall.com/lists/oss-security/2024/03/11/1", "tags": ["x_transferred"]}, {"url": "https://security.netapp.com/advisory/ntap-20240531-0007/", "tags": ["x_transferred"]}]}, {"metrics": [{"cvssV3_1": {"scope": "UNCHANGED", "version": "3.1", "baseScore": 5.9, "attackVector": "NETWORK", "baseSeverity": "MEDIUM", "vectorString": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H", "integrityImpact": "NONE", "userInteraction": "NONE", "attackComplexity": "HIGH", "availabilityImpact": "HIGH", "privilegesRequired": "NONE", "confidentialityImpact": "NONE"}}, {"other": {"type": "ssvc", "content": {"timestamp": "2024-08-20T14:44:52.382969Z", "id": "CVE-2023-6237", "options": [{"Exploitation": "none"}, {"Automatable": "no"}, {"Technical Impact": "partial"}], "role": "CISA Coordinator", "version": "2.0.3"}}}], "title": "CISA ADP Vulnrichment", "providerMetadata": {"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "shortName": "CISA-ADP", "dateUpdated": "2024-11-01T14:28:51.338Z"}}]}, "dataVersion": "5.1"}

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Where the key that\nis being checked has been obtained from an untrusted source this may lead\nto a Denial of Service.\n\nWhen function EVP_PKEY_public_check() is called on RSA public keys,\na computation is done to confirm that the RSA modulus, n, is composite.\nFor valid RSA keys, n is a product of two or more large primes and this\ncomputation completes quickly. However, if n is an overly large prime,\nthen this computation would take a long time.\n\nAn application that calls EVP_PKEY_public_check() and supplies an RSA key\nobtained from an untrusted source could be vulnerable to a Denial of Service\nattack.\n\nThe function EVP_PKEY_public_check() is not called from other OpenSSL\nfunctions however it is called from the OpenSSL pkey command line\napplication. For that reason that application is also vulnerable if used\nwith the '-pubin' and '-check' options on untrusted data.\n\nThe OpenSSL SSL/TLS implementation is not affected by this issue.\n\nThe OpenSSL 3.0 and 3.1 FIPS providers are affected by this issue.", "supportingMedia": [{"type": "text/html", "value": "Issue summary: Checking excessively long invalid RSA public keys may take<br>a long time.<br><br>Impact summary: Applications that use the function EVP_PKEY_public_check()<br>to check RSA public keys may experience long delays. Where the key that<br>is being checked has been obtained from an untrusted source this may lead<br>to a Denial of Service.<br><br>When function EVP_PKEY_public_check() is called on RSA public keys,<br>a computation is done to confirm that the RSA modulus, n, is composite.<br>For valid RSA keys, n is a product of two or more large primes and this<br>computation completes quickly. However, if n is an overly large prime,<br>then this computation would take a long time.<br><br>An application that calls EVP_PKEY_public_check() and supplies an RSA key<br>obtained from an untrusted source could be vulnerable to a Denial of Service<br>attack.<br><br>The function EVP_PKEY_public_check() is not called from other OpenSSL<br>functions however it is called from the OpenSSL pkey command line<br>application. For that reason that application is also vulnerable if used<br>with the '-pubin' and '-check' options on untrusted data.<br><br>The OpenSSL SSL/TLS implementation is not affected by this issue.<br><br>The OpenSSL 3.0 and 3.1 FIPS providers are affected by this issue.", "base64": false}]}], "problemTypes": [{"descriptions": [{"lang": "en", "type": "CWE", "cweId": "CWE-606", "description": "CWE-606 Unchecked Input for Loop Condition"}]}], "providerMetadata": {"orgId": "3a12439a-ef3a-4c79-92e6-6081a721f1e5", "shortName": "openssl", "dateUpdated": "2024-10-14T14:55:56.955Z"}}}, "cveMetadata": {"cveId": "CVE-2023-6237", "state": "PUBLISHED", "dateUpdated": "2024-11-01T14:28:51.338Z", "dateReserved": "2023-11-21T10:16:34.346Z", "assignerOrgId": "3a12439a-ef3a-4c79-92e6-6081a721f1e5", "datePublished": "2024-04-25T06:27:26.990Z", "assignerShortName": "openssl"}, "dataVersion": "5.1"}

{"descriptions": [{"lang": "en", "value": "Issue summary: Checking excessively long invalid RSA public keys may take\na long time.\n\nImpact summary: Applications that use the function EVP_PKEY_public_check()\nto check RSA public keys may experience long delays. Where the key that\nis being checked has been obtained from an untrusted source this may lead\nto a Denial of Service.\n\nWhen function EVP_PKEY_public_check() is called on RSA public keys,\na computation is done to confirm that the RSA modulus, n, is composite.\nFor valid RSA keys, n is a product of two or more large primes and this\ncomputation completes quickly. However, if n is an overly large prime,\nthen this computation would take a long time.\n\nAn application that calls EVP_PKEY_public_check() and supplies an RSA key\nobtained from an untrusted source could be vulnerable to a Denial of Service\nattack.\n\nThe function EVP_PKEY_public_check() is not called from other OpenSSL\nfunctions however it is called from the OpenSSL pkey command line\napplication. For that reason that application is also vulnerable if used\nwith the '-pubin' and '-check' options on untrusted data.\n\nThe OpenSSL SSL/TLS implementation is not affected by this issue.\n\nThe OpenSSL 3.0 and 3.1 FIPS providers are affected by this issue."}, {"lang": "es", "value": "Resumen del problema: la comprobaci\u00f3n de claves p\u00fablicas RSA inv\u00e1lidas excesivamente largas puede llevar mucho tiempo. Resumen de impacto: las aplicaciones que utilizan la funci\u00f3n EVP_PKEY_public_check() para comprobar las claves p\u00fablicas RSA pueden experimentar grandes retrasos. Cuando la clave que se est\u00e1 verificando se obtuvo de una fuente que no es confiable, esto puede dar lugar a una denegaci\u00f3n de servicio. Cuando se llama a la funci\u00f3n EVP_PKEY_public_check() en claves p\u00fablicas RSA, se realiza un c\u00e1lculo para confirmar que el m\u00f3dulo RSA, n, es compuesto. Para claves RSA v\u00e1lidas, n es un producto de dos o m\u00e1s n\u00fameros primos grandes y este c\u00e1lculo se completa r\u00e1pidamente. Sin embargo, si n es un n\u00famero primo demasiado grande, entonces este c\u00e1lculo llevar\u00eda mucho tiempo. Una aplicaci\u00f3n que llama a EVP_PKEY_public_check() y proporciona una clave RSA obtenida de una fuente que no es de confianza podr\u00eda ser vulnerable a un ataque de denegaci\u00f3n de servicio. La funci\u00f3n EVP_PKEY_public_check() no se llama desde otras funciones de OpenSSL, sin embargo, se llama desde la aplicaci\u00f3n de l\u00ednea de comandos pkey de OpenSSL. Por esa raz\u00f3n, esa aplicaci\u00f3n tambi\u00e9n es vulnerable si se usa con las opciones '-pubin' y '-check' en datos que no son de confianza. La implementaci\u00f3n de OpenSSL SSL/TLS no se ve afectada por este problema. Los proveedores FIPS OpenSSL 3.0 y 3.1 se ven afectados por este problema."}], "id": "CVE-2023-6237", "lastModified": "2024-11-21T08:43:25.997", "metrics": {"cvssMetricV31": [{"cvssData": {"attackComplexity": "HIGH", "attackVector": "NETWORK", "availabilityImpact": "HIGH", "baseScore": 5.9, "baseSeverity": "MEDIUM", "confidentialityImpact": "NONE", "integrityImpact": "NONE", "privilegesRequired": "NONE", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H", "version": "3.1"}, "exploitabilityScore": 2.2, "impactScore": 3.6, "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "type": "Secondary"}]}, "published": "2024-04-25T07:15:45.270", "references": [{"source": "openssl-security@openssl.org", "url": "https://github.com/openssl/openssl/commit/0b0f7abfb37350794a4b8960fafc292cd5d1b84d"}, {"source": "openssl-security@openssl.org", "url": "https://github.com/openssl/openssl/commit/18c02492138d1eb8b6548cb26e7b625fb2414a2a"}, {"source": "openssl-security@openssl.org", "url": "https://github.com/openssl/openssl/commit/a830f551557d3d66a84bbb18a5b889c640c36294"}, {"source": "openssl-security@openssl.org", "url": "https://www.openssl.org/news/secadv/20240115.txt"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "url": "http://www.openwall.com/lists/oss-security/2024/03/11/1"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "url": "https://github.com/openssl/openssl/commit/0b0f7abfb37350794a4b8960fafc292cd5d1b84d"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "url": "https://github.com/openssl/openssl/commit/18c02492138d1eb8b6548cb26e7b625fb2414a2a"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "url": "https://github.com/openssl/openssl/commit/a830f551557d3d66a84bbb18a5b889c640c36294"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "url": "https://security.netapp.com/advisory/ntap-20240531-0007/"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "url": "https://www.openssl.org/news/secadv/20240115.txt"}], "sourceIdentifier": "openssl-security@openssl.org", "vulnStatus": "Awaiting Analysis", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-606"}], "source": "openssl-security@openssl.org", "type": "Secondary"}]}

{"affected_release": [{"advisory": "RHSA-2024:2447", "cpe": "cpe:/a:redhat:enterprise_linux:9", "package": "openssl-1:3.0.7-27.el9", "product_name": "Red Hat Enterprise Linux 9", "release_date": "2024-04-30T00:00:00Z"}, {"advisory": "RHSA-2024:9088", "cpe": "cpe:/a:redhat:enterprise_linux:9", "package": "edk2-0:20240524-6.el9_5", "product_name": "Red Hat Enterprise Linux 9", "release_date": "2024-11-12T00:00:00Z"}, {"advisory": "RHSA-2024:2447", "cpe": "cpe:/o:redhat:enterprise_linux:9", "package": "openssl-1:3.0.7-27.el9", "product_name": "Red Hat Enterprise Linux 9", "release_date": "2024-04-30T00:00:00Z"}], "bugzilla": {"description": "openssl: Excessive time spent checking invalid RSA public keys", "id": "2258502", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2258502"}, "csaw": false, "cvss3": {"cvss3_base_score": "5.9", "cvss3_scoring_vector": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H", "status": "verified"}, "cwe": "CWE-400", "details": ["Issue summary: Checking excessively long invalid RSA public keys may take\na long time.\nImpact summary: Applications that use the function EVP_PKEY_public_check()\nto check RSA public keys may experience long delays. Where the key that\nis being checked has been obtained from an untrusted source this may lead\nto a Denial of Service.\nWhen function EVP_PKEY_public_check() is called on RSA public keys,\na computation is done to confirm that the RSA modulus, n, is composite.\nFor valid RSA keys, n is a product of two or more large primes and this\ncomputation completes quickly. However, if n is an overly large prime,\nthen this computation would take a long time.\nAn application that calls EVP_PKEY_public_check() and supplies an RSA key\nobtained from an untrusted source could be vulnerable to a Denial of Service\nattack.\nThe function EVP_PKEY_public_check() is not called from other OpenSSL\nfunctions however it is called from the OpenSSL pkey command line\napplication. For that reason that application is also vulnerable if used\nwith the '-pubin' and '-check' options on untrusted data.\nThe OpenSSL SSL/TLS implementation is not affected by this issue.\nThe OpenSSL 3.0 and 3.1 FIPS providers are affected by this issue.", "A flaw was found in OpenSSL. When the EVP_PKEY_public_check() function is called in RSA public keys, a computation is done to confirm that the RSA modulus, n, is composite. For valid RSA keys, n is a product of two or more large primes and this computation completes quickly. However, if n is a large prime, this computation takes a long time. An application that calls EVP_PKEY_public_check() and supplies an RSA key obtained from an untrusted source could be vulnerable to a Denial of Service attack."], "mitigation": {"lang": "en:us", "value": "Mitigation for this issue is either not available or the currently available options do not meet the Red Hat Product Security criteria comprising ease of use and deployment, applicability to widespread installation base or stability."}, "name": "CVE-2023-6237", "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": "edk2", "product_name": "Red Hat Enterprise Linux 8"}, {"cpe": "cpe:/o:redhat:enterprise_linux:8", "fix_state": "Not affected", "package_name": "openssl", "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": "Not affected", "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_core_services:1", "fix_state": "Not affected", "package_name": "openssl", "product_name": "Red Hat JBoss Core Services"}, {"cpe": "cpe:/a:redhat:jboss_enterprise_web_server:5", "fix_state": "Not affected", "package_name": "openssl", "product_name": "Red Hat JBoss Web Server 5"}], "public_date": "2024-01-15T00:00:00Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2023-6237\nhttps://nvd.nist.gov/vuln/detail/CVE-2023-6237\nhttps://www.openssl.org/news/secadv/20240115.txt\nhttps://www.openwall.com/lists/oss-security/2024/01/15/2"], "statement": "Red Hat Product Security rates the severity of this flaw as determined by the upstream OpenSSL security team.\nThe marked moderate issue in OpenSSL involves a flaw in the EVP_PKEY_public_check() function used for RSA public keys. When verifying keys, the computation to confirm the composite nature of the RSA modulus may take an extended time if the modulus is a large prime. This vulnerability could be exploited for a Denial of Service attack in applications using this function with RSA keys from untrusted sources. The severity is moderate as it requires specific conditions for exploitation and may not pose an immediate widespread threat.", "threat_severity": "Low"}

{}