gsd-2023-3724
Vulnerability from gsd
Modified
2023-12-13 01:20
Details
If a TLS 1.3 client gets neither a PSK (pre shared key) extension nor a KSE (key share extension) when connecting to a malicious server, a default predictable buffer gets used for the IKM (Input Keying Material) value when generating the session master secret. Using a potentially known IKM value when generating the session master secret key compromises the key generated, allowing an eavesdropper to reconstruct it and potentially allowing access to or meddling with message contents in the session. This issue does not affect client validation of connected servers, nor expose private key information, but could result in an insecure TLS 1.3 session when not controlling both sides of the connection. wolfSSL recommends that TLS 1.3 client side users update the version of wolfSSL used.
Aliases
Aliases
{
"GSD": {
"alias": "CVE-2023-3724",
"id": "GSD-2023-3724"
},
"gsd": {
"metadata": {
"exploitCode": "unknown",
"remediation": "unknown",
"reportConfidence": "confirmed",
"type": "vulnerability"
},
"osvSchema": {
"aliases": [
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],
"details": "If a TLS 1.3 client gets neither a PSK (pre shared key) extension nor a KSE (key share extension) when connecting to a malicious server, a default predictable buffer gets used for the IKM (Input Keying Material) value when generating the session master secret. Using a potentially known IKM value when generating the session master secret key compromises the key generated, allowing an eavesdropper to reconstruct it and potentially allowing access to or meddling with message contents in the session. This issue does not affect client validation of connected servers, nor expose private key information, but could result in an insecure TLS 1.3 session when not controlling both sides of the connection. wolfSSL recommends that TLS 1.3 client side users update the version of wolfSSL used.\u00a0\n\n\n",
"id": "GSD-2023-3724",
"modified": "2023-12-13T01:20:54.826572Z",
"schema_version": "1.4.0"
}
},
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"ID": "CVE-2023-3724",
"STATE": "PUBLIC"
},
"affects": {
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"vendor_data": [
{
"product": {
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{
"product_name": "wolfSSL",
"version": {
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{
"version_affected": "\u003c=",
"version_name": "3.14.0",
"version_value": "5.6.0"
}
]
}
}
]
},
"vendor_name": "wolfSSL"
}
]
}
},
"credits": [
{
"lang": "en",
"value": " Johannes from Sectra Communications and Link\u00f6ping University"
}
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"data_format": "MITRE",
"data_type": "CVE",
"data_version": "4.0",
"description": {
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"lang": "eng",
"value": "If a TLS 1.3 client gets neither a PSK (pre shared key) extension nor a KSE (key share extension) when connecting to a malicious server, a default predictable buffer gets used for the IKM (Input Keying Material) value when generating the session master secret. Using a potentially known IKM value when generating the session master secret key compromises the key generated, allowing an eavesdropper to reconstruct it and potentially allowing access to or meddling with message contents in the session. This issue does not affect client validation of connected servers, nor expose private key information, but could result in an insecure TLS 1.3 session when not controlling both sides of the connection. wolfSSL recommends that TLS 1.3 client side users update the version of wolfSSL used.\u00a0\n\n\n"
}
]
},
"generator": {
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"impact": {
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"attackComplexity": "LOW",
"attackVector": "NETWORK",
"availabilityImpact": "HIGH",
"baseScore": 9.1,
"baseSeverity": "CRITICAL",
"confidentialityImpact": "HIGH",
"integrityImpact": "HIGH",
"privilegesRequired": "HIGH",
"scope": "CHANGED",
"userInteraction": "NONE",
"vectorString": "CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H",
"version": "3.1"
}
]
},
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"description": [
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"cweId": "CWE-20",
"lang": "eng",
"value": "CWE-20 Improper Input Validation"
}
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"references": {
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"name": "https://github.com/wolfSSL/wolfssl/pull/6412",
"refsource": "MISC",
"url": "https://github.com/wolfSSL/wolfssl/pull/6412"
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{
"name": "https://www.wolfssl.com/docs/security-vulnerabilities/",
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"solution": [
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"value": "\n\n\u003cspan style=\"background-color: transparent;\"\u003eFixed in the following GitHub pull request \u003c/span\u003e\u003ca target=\"_blank\" rel=\"nofollow\" href=\"https://github.com/wolfSSL/wolfssl/pull/6412\"\u003e\u003cspan style=\"background-color: transparent;\"\u003ehttps://github.com/wolfSSL/wolfssl/pull/6412\u003c/span\u003e\u003c/a\u003e\n\n\u003cbr\u003e"
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"value": "\nFixed in the following GitHub pull request https://github.com/wolfSSL/wolfssl/pull/6412 https://github.com/wolfSSL/wolfssl/pull/6412 \n\n\n"
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"source": {
"discovery": "EXTERNAL"
}
},
"gitlab.com": {
"advisories": [
{
"affected_range": "\u003c5.6.2",
"affected_versions": "All versions before 5.6.2",
"cvss_v3": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
"cwe_ids": [
"CWE-1035",
"CWE-295",
"CWE-937"
],
"date": "2023-07-28",
"description": "If a TLS 1.3 client gets neither a PSK (pre shared key) extension nor a KSE (key share extension) when connecting to a malicious server, a default predictable buffer gets used for the IKM (Input Keying Material) value when generating the session master secret. Using a potentially known IKM value when generating the session master secret key compromises the key generated, allowing an eavesdropper to reconstruct it and potentially allowing access to or meddling with message contents in the session. This issue does not affect client validation of connected servers, nor expose private key information, but could result in an insecure TLS 1.3 session when not controlling both sides of the connection. wolfSSL recommends that TLS 1.3 client side users update the version of wolfSSL used.\u00a0\n\n\n",
"fixed_versions": [
"5.6.3"
],
"identifier": "CVE-2023-3724",
"identifiers": [
"CVE-2023-3724"
],
"not_impacted": "All versions starting from 5.6.2",
"package_slug": "conan/wolfssl",
"pubdate": "2023-07-17",
"solution": "Upgrade to version 5.6.3 or above.",
"title": "Improper Certificate Validation",
"urls": [
"https://nvd.nist.gov/vuln/detail/CVE-2023-3724",
"https://www.wolfssl.com/docs/security-vulnerabilities/",
"https://github.com/wolfSSL/wolfssl/pull/6412"
],
"uuid": "33764298-7e25-4e6a-8709-d06f4fe3d435"
}
]
},
"nvd.nist.gov": {
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"nodes": [
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"children": [],
"cpe_match": [
{
"cpe23Uri": "cpe:2.3:a:wolfssl:wolfssl:*:*:*:*:*:*:*:*",
"cpe_name": [],
"versionEndExcluding": "5.6.2",
"vulnerable": true
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"operator": "OR"
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"cve": {
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"ASSIGNER": "facts@wolfssl.com",
"ID": "CVE-2023-3724"
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"description": {
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"value": "If a TLS 1.3 client gets neither a PSK (pre shared key) extension nor a KSE (key share extension) when connecting to a malicious server, a default predictable buffer gets used for the IKM (Input Keying Material) value when generating the session master secret. Using a potentially known IKM value when generating the session master secret key compromises the key generated, allowing an eavesdropper to reconstruct it and potentially allowing access to or meddling with message contents in the session. This issue does not affect client validation of connected servers, nor expose private key information, but could result in an insecure TLS 1.3 session when not controlling both sides of the connection. wolfSSL recommends that TLS 1.3 client side users update the version of wolfSSL used.\u00a0\n\n\n"
}
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"name": "https://www.wolfssl.com/docs/security-vulnerabilities/",
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"tags": [
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"name": "https://github.com/wolfSSL/wolfssl/pull/6412",
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"impact": {
"baseMetricV3": {
"cvssV3": {
"attackComplexity": "LOW",
"attackVector": "NETWORK",
"availabilityImpact": "HIGH",
"baseScore": 8.8,
"baseSeverity": "HIGH",
"confidentialityImpact": "HIGH",
"integrityImpact": "HIGH",
"privilegesRequired": "LOW",
"scope": "UNCHANGED",
"userInteraction": "NONE",
"vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
"version": "3.1"
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"exploitabilityScore": 2.8,
"impactScore": 5.9
}
},
"lastModifiedDate": "2023-07-28T13:54Z",
"publishedDate": "2023-07-17T22:15Z"
}
}
}
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Sightings
| Author | Source | Type | Date |
|---|
Nomenclature
- Seen: The vulnerability was mentioned, discussed, or seen somewhere by the user.
- Confirmed: The vulnerability is confirmed from an analyst perspective.
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- Patched: This vulnerability was successfully patched by the user reporting the sighting.
- Not exploited: This vulnerability was not exploited or seen by the user reporting the sighting.
- Not confirmed: The user expresses doubt about the veracity of the vulnerability.
- Not patched: This vulnerability was not successfully patched by the user reporting the sighting.