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vuln-cve/data/2022/4xxx/CVE-2022-4450.json
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{
"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": "2026-10-14T14:39:44.108Z"
},
"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 Schönefeld"
},
{
"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. 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>"
}
],
"value": "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.\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."
}
],
"metrics": [
{
"format": "other",
"other": {
"content": {
"text": "Moderate"
},
"type": "https://www.openssl.org/policies/secpolicy.html"
}
}
],
"problemTypes": [
{
"descriptions": [
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"description": "double-free",
"lang": "en"
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"providerMetadata": {
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"shortName": "openssl",
"dateUpdated": "2024-02-04T09:06:50.535Z"
},
"references": [
{
"name": "OpenSSL Advisory",
"tags": [
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],
"url": "https://www.openssl.org/news/secadv/20230207.txt"
},
{
"name": "3.0.8 git commit",
"tags": [
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"url": "https://git.openssl.org/gitweb/?p=openssl.git;a=commitdiff;h=bbcf509bd046b34cca19c766bbddc31683d0858b"
},
{
"url": "https://security.gentoo.org/glsa/202402-08"
}
],
"source": {
"discovery": "UNKNOWN"
},
"title": "Double free after calling PEM_read_bio_ex",
"x_generator": {
"engine": "Vulnogram 0.1.0-dev"
}
},
"adp": [
{
"title": "CVE Program Container",
"references": [
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"x_transferred"
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{
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{
"url": "https://psirt.global.sonicwall.com/vuln-detail/SNWLID-2023-0003"
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"providerMetadata": {
"orgId": "af854a3a-2127-422b-91ae-364da2661108",
"shortName": "CVE",
"dateUpdated": "2025-11-04T19:14:13.257Z"
}
},
{
"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"
}
]
}
],
"title": "CISA ADP Vulnrichment",
"providerMetadata": {
"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
"shortName": "CISA-ADP",
"dateUpdated": "2025-08-27T20:32:52.583Z"
}
},
{
"x_adpType": "supplier",
"providerMetadata": {
"orgId": "0b142b55-0307-4c5a-b3c9-f314f3fb7c5e",
"shortName": "siemens-SADP",
"dateUpdated": "2026-10-14T14:39:44.108Z"
},
"affected": [
{
"vendor": "Siemens",
"product": "SCALANCE W1750D (JP)",
"versions": [
{
"status": "affected",
"version": "0",
"lessThan": "V8.10.0.9",
"versionType": "custom"
}
],
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{
"vendor": "Siemens",
"product": "SCALANCE W1750D (ROW)",
"versions": [
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"lessThan": "V8.10.0.9",
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}
],
"defaultStatus": "unknown"
},
{
"vendor": "Siemens",
"product": "SCALANCE W1750D (USA)",
"versions": [
{
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"lessThan": "V8.10.0.9",
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}
],
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},
{
"vendor": "Siemens",
"product": "SIMATIC S7-1500 CPU 1518-4 PN/DP MFP",
"versions": [
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{
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}
}
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