{"schema_version":"1","data":[{"id":24294,"advisory_id":"9eee4a17-59f1-41a9-b2ea-670a258979df","revision":1,"source_id":"core-cve","source_url":"https://www.cve.org/CVERecord?id=CVE-2023-6237","source_published_at":"2024-04-25T06:27:26.99+00:00","published_at":"2026-10-25T06:33:08.005843+00:00","extraction_method":"structured","technologies":["core-cve","openssl"],"cve_ids":["CVE-2023-6237"],"event_types":["advisory"],"payload":{"kind":"advisory","title":"Excessive time spent checking invalid RSA public keys","summary":"Issue summary: Checking excessively long invalid RSA public keys may take a long time. Impact summary: Applications that use the function EVP_PKEY_public_check() to check RSA public keys may experience long delays. Where the key that is being checked has been obtained from an untrusted source this may lead to a Denial of Service. When function EVP_PKEY_public_check() is called on 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 an overly large prime, then this computation would take 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. The function EVP_PKEY_public_check() is not called from other OpenSSL functions however it is called from the OpenSSL pkey command line application. For that reason that application is also vulnerable if used with the '-pubin' and '-check' options on untrusted data. The OpenSSL SSL/TLS implementation is not affected by this issue. The OpenSSL 3.0 and 3.1 FIPS providers are affected by this issue.","evidence":"cve:CVE-2023-6237","products":[{"name":{"value":"OpenSSL","evidence":"/containers/cna/affected/0/product"},"prerequisites":[],"fixed_versions":[],"affected_versions":[]}],"severity":"unknown","structured":{"id":"CVE-2023-6237","aliases":["CVE-2023-6237"],"metrics":[{"other":{"type":"https://www.openssl.org/policies/secpolicy.html","content":{"text":"Low"}},"format":"other"}],"affected":[{"vendor":"OpenSSL","product":"OpenSSL","versions":[{"status":"affected","version":"3.0.0","lessThan":"3.0.13","versionType":"semver"},{"status":"affected","version":"3.1.0","lessThan":"3.1.5","versionType":"semver"},{"status":"affected","version":"3.2.0","lessThan":"3.2.1","versionType":"semver"}],"defaultStatus":"unaffected"}],"modified":"2026-10-14T22:15:15.166Z","provider":"cve","references":["https://www.openssl.org/news/secadv/20240115.txt","https://github.com/openssl/openssl/commit/18c02492138d1eb8b6548cb26e7b625fb2414a2a","https://github.com/openssl/openssl/commit/a830f551557d3d66a84bbb18a5b889c640c36294","https://github.com/openssl/openssl/commit/0b0f7abfb37350794a4b8960fafc292cd5d1b84d"],"provider_metadata":{"adp":[{"title":"CVE Program Container","references":[{"url":"https://www.openssl.org/news/secadv/20240115.txt","name":"OpenSSL Advisory","tags":["vendor-advisory","x_transferred"]},{"url":"https://github.com/openssl/openssl/commit/18c02492138d1eb8b6548cb26e7b625fb2414a2a","name":"3.0.13 git commit","tags":["patch","x_transferred"]},{"url":"https://github.com/openssl/openssl/commit/a830f551557d3d66a84bbb18a5b889c640c36294","name":"3.1.5 git commit","tags":["patch","x_transferred"]},{"url":"https://github.com/openssl/openssl/commit/0b0f7abfb37350794a4b8960fafc292cd5d1b84d","name":"3.2.1 git commit","tags":["patch","x_transferred"]},{"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"]}],"providerMetadata":{"orgId":"af854a3a-2127-422b-91ae-364da2661108","shortName":"CVE","dateUpdated":"2024-08-02T08:21:18.096Z"}},{"title":"CISA ADP Vulnrichment","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":{"id":"CVE-2023-6237","role":"CISA Coordinator","options":[{"Exploitation":"none"},{"Automatable":"no"},{"Technical Impact":"partial"}],"version":"2.0.3","timestamp":"2024-08-20T14:44:52.382969Z"}}}],"providerMetadata":{"orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","shortName":"CISA-ADP","dateUpdated":"2024-11-01T14:28:51.338Z"}},{"affected":[{"vendor":"Siemens","product":"SIMATIC S7-1500 TM MFP - GNU/Linux subsystem","versions":[{"status":"affected","version":"0","lessThan":"V1.1.1","versionType":"custom"}],"defaultStatus":"unknown"},{"vendor":"Siemens","product":"SINEC NMS","versions":[{"status":"affected","version":"0","lessThan":"V3.0 SP1","versionType":"custom"}],"defaultStatus":"unknown"}],"x_adpType":"supplier","references":[{"url":"https://cert-portal.siemens.com/productcert/html/ssa-265688.html"},{"url":"https://cert-portal.siemens.com/productcert/html/ssa-331112.html"},{"url":"https://cert-portal.siemens.com/productcert/html/ssa-915275.html"},{"url":"https://cert-portal.siemens.com/productcert/html/ssa-769027.html"}],"providerMetadata":{"orgId":"0b142b55-0307-4c5a-b3c9-f314f3fb7c5e","shortName":"siemens-SADP","dateUpdated":"2026-10-14T22:15:15.166Z"}}],"cna":{"orgId":"3a12439a-ef3a-4c79-92e6-6081a721f1e5","shortName":"openssl","dateUpdated":"2024-10-14T14:55:56.955Z"}}},"related_cves":[{"value":"CVE-2023-6237","evidence":"/cveMetadata/cveId"}],"security_relevant":true,"severity_evidence":null}}],"next_after":24294,"next_before":24294}