{"schema_version":"1","data":[{"id":22016,"advisory_id":"a9fc0e6f-5ccc-4aea-82fc-2760e2a19dc4","revision":1,"source_id":"core-cve","source_url":"https://www.cve.org/CVERecord?id=CVE-2022-4450","source_published_at":"2023-02-08T19:04:04.874+00:00","published_at":"2026-10-25T05:54:28.869939+00:00","extraction_method":"structured","technologies":["core-cve","openssl"],"cve_ids":["CVE-2022-4450"],"event_types":["advisory"],"payload":{"kind":"advisory","title":"Double free after calling PEM_read_bio_ex","summary":"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 impacte","evidence":"cve:CVE-2022-4450","products":[{"name":{"value":"OpenSSL","evidence":"/containers/cna/affected/0/product"},"prerequisites":[],"fixed_versions":[],"affected_versions":[]}],"severity":"unknown","structured":{"id":"CVE-2022-4450","aliases":["CVE-2022-4450"],"metrics":[{"other":{"type":"https://www.openssl.org/policies/secpolicy.html","content":{"text":"Moderate"}},"format":"other"}],"affected":[{"vendor":"OpenSSL","product":"OpenSSL","versions":[{"status":"affected","version":"3.0.0","lessThan":"3.0.8","versionType":"semver"},{"status":"affected","version":"1.1.1","lessThan":"1.1.1t","versionType":"custom"}],"defaultStatus":"unaffected"}],"modified":"2026-10-14T14:39:44.108Z","provider":"cve","references":["https://www.openssl.org/news/secadv/20230207.txt","https://git.openssl.org/gitweb/?p=openssl.git;a=commitdiff;h=63bcf189be73a9cc1264059bed6f57974be74a83","https://git.openssl.org/gitweb/?p=openssl.git;a=commitdiff;h=bbcf509bd046b34cca19c766bbddc31683d0858b","https://security.gentoo.org/glsa/202402-08"],"provider_metadata":{"adp":[{"title":"CVE Program Container","references":[{"url":"https://www.openssl.org/news/secadv/20230207.txt","name":"OpenSSL Advisory","tags":["vendor-advisory","x_transferred"]},{"url":"https://git.openssl.org/gitweb/?p=openssl.git;a=commitdiff;h=63bcf189be73a9cc1264059bed6f57974be74a83","name":"3.0.8 git commit","tags":["patch","x_transferred"]},{"url":"https://git.openssl.org/gitweb/?p=openssl.git;a=commitdiff;h=bbcf509bd046b34cca19c766bbddc31683d0858b","name":"1.1.1t git commit","tags":["patch","x_transferred"]},{"url":"https://security.gentoo.org/glsa/202402-08","tags":["x_transferred"]},{"url":"https://psirt.global.sonicwall.com/vuln-detail/SNWLID-2023-0003"}],"providerMetadata":{"orgId":"af854a3a-2127-422b-91ae-364da2661108","shortName":"CVE","dateUpdated":"2025-11-04T19:14:13.257Z"}},{"title":"CISA ADP Vulnrichment","metrics":[{"cvssV3_1":{"scope":"UNCHANGED","version":"3.1","baseScore":7.5,"attackVector":"NETWORK","baseSeverity":"HIGH","vectorString":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","integrityImpact":"NONE","userInteraction":"NONE","attackComplexity":"LOW","availabilityImpact":"HIGH","privilegesRequired":"NONE","confidentialityImpact":"NONE"}},{"other":{"type":"ssvc","content":{"id":"CVE-2022-4450","role":"CISA Coordinator","options":[{"Exploitation":"none"},{"Automatable":"yes"},{"Technical Impact":"partial"}],"version":"2.0.3","timestamp":"2025-04-23T13:26:38.705489Z"}}}],"problemTypes":[{"descriptions":[{"lang":"en","type":"CWE","cweId":"CWE-415","description":"CWE-415 Double Free"}]}],"providerMetadata":{"orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","shortName":"CISA-ADP","dateUpdated":"2025-08-27T20:32:52.583Z"}},{"affected":[{"vendor":"Siemens","product":"SCALANCE W1750D (JP)","versions":[{"status":"affected","version":"0","lessThan":"V8.10.0.9","versionType":"custom"}],"defaultStatus":"unknown"},{"vendor":"Siemens","product":"SCALANCE W1750D (ROW)","versions":[{"status":"affected","version":"0","lessThan":"V8.10.0.9","versionType":"custom"}],"defaultStatus":"unknown"},{"vendor":"Siemens","product":"SCALANCE W1750D (USA)","versions":[{"status":"affected","version":"0","lessThan":"V8.10.0.9","versionType":"custom"}],"defaultStatus":"unknown"},{"vendor":"Siemens","product":"SIMATIC S7-1500 CPU 1518-4 PN/DP MFP","versions":[{"status":"affected","version":"V3.1.0","lessThan":"V3.1.5","versionType":"custom"}],"defaultStatus":"unknown"},{"vendor":"Siemens","product":"SIMATIC S7-1500 CPU 1518-4 PN/DP MFP","versions":[{"status":"affected","version":"V3.1.0","lessThan":"V3.1.5","versionType":"custom"}],"defaultStatus":"unknown"},{"vendor":"Siemens","product":"SIMATIC S7-1500 CPU 1518F-4 PN/DP MFP","versions":[{"status":"affected","version":"V3.1.0","lessThan":"V3.1.5","versionType":"custom"}],"defaultStatus":"unknown"},{"vendor":"Siemens","product":"SIMATIC S7-1500 CPU 1518F-4 PN/DP MFP","versions":[{"status":"affected","version":"V3.1.0","lessThan":"V3.1.5","versionType":"custom"}],"defaultStatus":"unknown"},{"vendor":"Siemens","product":"SIMATIC S7-1500 TM MFP - GNU/Linux subsystem","versions":[{"status":"affected","version":"0","lessThan":"V1.1","versionType":"custom"}],"defaultStatus":"unknown"},{"vendor":"Siemens","product":"SIPLUS S7-1500 CPU 1518-4 PN/DP MFP","versions":[{"status":"affected","version":"V3.1.0","lessThan":"V3.1.5","versionType":"custom"}],"defaultStatus":"unknown"}],"x_adpType":"supplier","references":[{"url":"https://cert-portal.siemens.com/productcert/html/ssa-203374.html"},{"url":"https://cert-portal.siemens.com/productcert/html/ssa-794697.html"},{"url":"https://cert-portal.siemens.com/productcert/html/ssa-561322.html"},{"url":"https://cert-portal.siemens.com/productcert/html/ssa-699386.html"},{"url":"https://cert-portal.siemens.com/productcert/html/ssa-398330.html"},{"url":"https://cert-portal.siemens.com/productcert/html/ssa-943925.html"},{"url":"https://cert-portal.siemens.com/productcert/html/ssa-556635.html"},{"url":"https://cert-portal.siemens.com/productcert/html/ssa-879734.html"},{"url":"https://cert-portal.siemens.com/productcert/html/ssa-625862.html"},{"url":"https://cert-portal.siemens.com/productcert/html/ssa-337522.html"},{"url":"https://cert-portal.siemens.com/productcert/html/ssa-769027.html"}],"providerMetadata":{"orgId":"0b142b55-0307-4c5a-b3c9-f314f3fb7c5e","shortName":"siemens-SADP","dateUpdated":"2026-10-14T14:39:44.108Z"}}],"cna":{"orgId":"3a12439a-ef3a-4c79-92e6-6081a721f1e5","shortName":"openssl","dateUpdated":"2024-02-04T09:06:50.535Z"}}},"related_cves":[{"value":"CVE-2022-4450","evidence":"/cveMetadata/cveId"}],"security_relevant":true,"severity_evidence":null}}],"next_after":22016,"next_before":22016}