GSD-2018-8970
Vulnerability from gsd - Updated: 2023-12-13 01:22Details
The int_x509_param_set_hosts function in lib/libcrypto/x509/x509_vpm.c in LibreSSL 2.7.0 before 2.7.1 does not support a certain special case of a zero name length, which causes silent omission of hostname verification, and consequently allows man-in-the-middle attackers to spoof servers and obtain sensitive information via a crafted certificate. NOTE: the LibreSSL documentation indicates that this special case is supported, but the BoringSSL documentation does not.
Aliases
Aliases
{
"GSD": {
"alias": "CVE-2018-8970",
"description": "The int_x509_param_set_hosts function in lib/libcrypto/x509/x509_vpm.c in LibreSSL 2.7.0 before 2.7.1 does not support a certain special case of a zero name length, which causes silent omission of hostname verification, and consequently allows man-in-the-middle attackers to spoof servers and obtain sensitive information via a crafted certificate. NOTE: the LibreSSL documentation indicates that this special case is supported, but the BoringSSL documentation does not.",
"id": "GSD-2018-8970",
"references": [
"https://www.suse.com/security/cve/CVE-2018-8970.html"
]
},
"gsd": {
"metadata": {
"exploitCode": "unknown",
"remediation": "unknown",
"reportConfidence": "confirmed",
"type": "vulnerability"
},
"osvSchema": {
"aliases": [
"CVE-2018-8970"
],
"details": "The int_x509_param_set_hosts function in lib/libcrypto/x509/x509_vpm.c in LibreSSL 2.7.0 before 2.7.1 does not support a certain special case of a zero name length, which causes silent omission of hostname verification, and consequently allows man-in-the-middle attackers to spoof servers and obtain sensitive information via a crafted certificate. NOTE: the LibreSSL documentation indicates that this special case is supported, but the BoringSSL documentation does not.",
"id": "GSD-2018-8970",
"modified": "2023-12-13T01:22:34.912207Z",
"schema_version": "1.4.0"
}
},
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"affects": {
"vendor": {
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{
"product": {
"product_data": [
{
"product_name": "n/a",
"version": {
"version_data": [
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"version_value": "n/a"
}
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}
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"value": "The int_x509_param_set_hosts function in lib/libcrypto/x509/x509_vpm.c in LibreSSL 2.7.0 before 2.7.1 does not support a certain special case of a zero name length, which causes silent omission of hostname verification, and consequently allows man-in-the-middle attackers to spoof servers and obtain sensitive information via a crafted certificate. NOTE: the LibreSSL documentation indicates that this special case is supported, but the BoringSSL documentation does not."
}
]
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"references": {
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{
"name": "https://github.com/libressl-portable/openbsd/commit/0654414afcce51a16d35d05060190a3ec4618d42",
"refsource": "MISC",
"url": "https://github.com/libressl-portable/openbsd/commit/0654414afcce51a16d35d05060190a3ec4618d42"
},
{
"name": "https://ftp.openbsd.org/pub/OpenBSD/LibreSSL/libressl-2.7.1-relnotes.txt",
"refsource": "MISC",
"url": "https://ftp.openbsd.org/pub/OpenBSD/LibreSSL/libressl-2.7.1-relnotes.txt"
},
{
"name": "https://boringssl.googlesource.com/boringssl/+/e759a9cd84198613199259dbed401f4951747cff",
"refsource": "MISC",
"url": "https://boringssl.googlesource.com/boringssl/+/e759a9cd84198613199259dbed401f4951747cff"
}
]
}
},
"nvd.nist.gov": {
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"nodes": [
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"cpe_match": [
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"ID": "CVE-2018-8970"
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"description": {
"description_data": [
{
"lang": "en",
"value": "The int_x509_param_set_hosts function in lib/libcrypto/x509/x509_vpm.c in LibreSSL 2.7.0 before 2.7.1 does not support a certain special case of a zero name length, which causes silent omission of hostname verification, and consequently allows man-in-the-middle attackers to spoof servers and obtain sensitive information via a crafted certificate. NOTE: the LibreSSL documentation indicates that this special case is supported, but the BoringSSL documentation does not."
}
]
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"value": "CWE-295"
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"references": {
"reference_data": [
{
"name": "https://github.com/libressl-portable/openbsd/commit/0654414afcce51a16d35d05060190a3ec4618d42",
"refsource": "MISC",
"tags": [
"Patch",
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"url": "https://github.com/libressl-portable/openbsd/commit/0654414afcce51a16d35d05060190a3ec4618d42"
},
{
"name": "https://ftp.openbsd.org/pub/OpenBSD/LibreSSL/libressl-2.7.1-relnotes.txt",
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{
"name": "https://boringssl.googlesource.com/boringssl/+/e759a9cd84198613199259dbed401f4951747cff",
"refsource": "MISC",
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"url": "https://boringssl.googlesource.com/boringssl/+/e759a9cd84198613199259dbed401f4951747cff"
}
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}
},
"impact": {
"baseMetricV2": {
"cvssV2": {
"accessComplexity": "MEDIUM",
"accessVector": "NETWORK",
"authentication": "NONE",
"availabilityImpact": "NONE",
"baseScore": 5.8,
"confidentialityImpact": "PARTIAL",
"integrityImpact": "PARTIAL",
"vectorString": "AV:N/AC:M/Au:N/C:P/I:P/A:N",
"version": "2.0"
},
"exploitabilityScore": 8.6,
"impactScore": 4.9,
"obtainAllPrivilege": false,
"obtainOtherPrivilege": false,
"obtainUserPrivilege": false,
"severity": "MEDIUM",
"userInteractionRequired": false
},
"baseMetricV3": {
"cvssV3": {
"attackComplexity": "HIGH",
"attackVector": "NETWORK",
"availabilityImpact": "NONE",
"baseScore": 7.4,
"baseSeverity": "HIGH",
"confidentialityImpact": "HIGH",
"integrityImpact": "HIGH",
"privilegesRequired": "NONE",
"scope": "UNCHANGED",
"userInteraction": "NONE",
"vectorString": "CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N",
"version": "3.0"
},
"exploitabilityScore": 2.2,
"impactScore": 5.2
}
},
"lastModifiedDate": "2018-04-24T16:40Z",
"publishedDate": "2018-03-24T21:29Z"
}
}
}
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Sightings
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The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the
vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base
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The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
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The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.
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