GSD-2019-3875
Vulnerability from gsd - Updated: 2023-12-13 01:24Details
A vulnerability was found in keycloak before 6.0.2. The X.509 authenticator supports the verification of client certificates through the CRL, where the CRL list can be obtained from the URL provided in the certificate itself (CDP) or through the separately configured path. The CRL are often available over the network through unsecured protocols ('http' or 'ldap') and hence the caller should verify the signature and possibly the certification path. Keycloak currently doesn't validate signatures on CRL, which can result in a possibility of various attacks like man-in-the-middle.
Aliases
Aliases
{
"GSD": {
"alias": "CVE-2019-3875",
"description": "A vulnerability was found in keycloak before 6.0.2. The X.509 authenticator supports the verification of client certificates through the CRL, where the CRL list can be obtained from the URL provided in the certificate itself (CDP) or through the separately configured path. The CRL are often available over the network through unsecured protocols (\u0027http\u0027 or \u0027ldap\u0027) and hence the caller should verify the signature and possibly the certification path. Keycloak currently doesn\u0027t validate signatures on CRL, which can result in a possibility of various attacks like man-in-the-middle.",
"id": "GSD-2019-3875",
"references": [
"https://access.redhat.com/errata/RHSA-2020:2366",
"https://access.redhat.com/errata/RHSA-2020:2067",
"https://access.redhat.com/errata/RHSA-2019:1456"
]
},
"gsd": {
"metadata": {
"exploitCode": "unknown",
"remediation": "unknown",
"reportConfidence": "confirmed",
"type": "vulnerability"
},
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"aliases": [
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"details": "A vulnerability was found in keycloak before 6.0.2. The X.509 authenticator supports the verification of client certificates through the CRL, where the CRL list can be obtained from the URL provided in the certificate itself (CDP) or through the separately configured path. The CRL are often available over the network through unsecured protocols (\u0027http\u0027 or \u0027ldap\u0027) and hence the caller should verify the signature and possibly the certification path. Keycloak currently doesn\u0027t validate signatures on CRL, which can result in a possibility of various attacks like man-in-the-middle.",
"id": "GSD-2019-3875",
"modified": "2023-12-13T01:24:04.487329Z",
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}
]
},
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"url": "https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2019-3875"
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{
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"gitlab.com": {
"advisories": [
{
"affected_range": "(,6.0.1]",
"affected_versions": "All versions up to 6.0.1",
"cvss_v2": "AV:N/AC:M/Au:N/C:P/I:P/A:N",
"cvss_v3": "CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:N",
"cwe_ids": [
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"CWE-295",
"CWE-937"
],
"date": "2021-08-17",
"description": "A vulnerability was found in keycloak before 6.0.2. The X.509 authenticator supports the verification of client certificates through the CRL, where the CRL list can be obtained from the URL provided in the certificate itself (CDP) or through the separately configured path. The CRL are often available over the network through unsecured protocols (\u0027http\u0027 or \u0027ldap\u0027) and hence the caller should verify the signature and possibly the certification path. Keycloak currently doesn\u0027t validate signatures on CRL, which can result in a possibility of various attacks like man-in-the-middle.",
"fixed_versions": [],
"identifier": "CVE-2019-3875",
"identifiers": [
"GHSA-38cg-gg9j-q9j9",
"CVE-2019-3875"
],
"not_impacted": "",
"package_slug": "maven/org.keycloak/keycloak-core",
"pubdate": "2019-06-27",
"solution": "Unfortunately, there is no solution available yet.",
"title": "Improper Certificate Validation",
"urls": [
"https://nvd.nist.gov/vuln/detail/CVE-2019-3875",
"https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2019-3875",
"https://github.com/advisories/GHSA-38cg-gg9j-q9j9"
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"uuid": "64d96f2a-9f33-4cac-8853-8bf2f0123d5c"
},
{
"affected_range": "\u003c6.0.2",
"affected_versions": "All versions before 6.0.2",
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"cwe_ids": [
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"CWE-937"
],
"date": "2019-10-09",
"description": "The X.509 authenticator supports the verification of client certificates through the CRL, where the CRL list can be obtained from the URL provided in the certificate itself (CDP) or through the separately configured path. The CRL are often available over the network through unsecured protocols (`http` or `ldap`) and hence the caller should verify the signature and possibly the certification path. Keycloak currently does not validate signatures on CRL, which can result in a possibility of various attacks like man-in-the-middle.",
"fixed_versions": [
"7.0.0"
],
"identifier": "CVE-2019-3875",
"identifiers": [
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],
"not_impacted": "All versions starting from 6.0.2",
"package_slug": "npm/keycloak-connect",
"pubdate": "2019-06-12",
"solution": "Upgrade to version 7.0.0 or above.",
"title": "Improper Certificate Validation",
"urls": [
"https://nvd.nist.gov/vuln/detail/CVE-2019-3875",
"http://www.securityfocus.com/bid/108748",
"https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2019-3875"
],
"uuid": "3550815d-9d74-431c-92d8-29c90644f49e"
}
]
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"cpe23Uri": "cpe:2.3:a:redhat:single_sign-on:7.3:*:*:*:*:*:*:*",
"cpe_name": [],
"vulnerable": true
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"cpe23Uri": "cpe:2.3:a:redhat:keycloak:*:*:*:*:*:*:*:*",
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"versionEndExcluding": "6.0.2",
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"description": {
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"value": "A vulnerability was found in keycloak before 6.0.2. The X.509 authenticator supports the verification of client certificates through the CRL, where the CRL list can be obtained from the URL provided in the certificate itself (CDP) or through the separately configured path. The CRL are often available over the network through unsecured protocols (\u0027http\u0027 or \u0027ldap\u0027) and hence the caller should verify the signature and possibly the certification path. Keycloak currently doesn\u0027t validate signatures on CRL, which can result in a possibility of various attacks like man-in-the-middle."
}
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"impact": {
"baseMetricV2": {
"acInsufInfo": false,
"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"
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"exploitabilityScore": 8.6,
"impactScore": 4.9,
"obtainAllPrivilege": false,
"obtainOtherPrivilege": false,
"obtainUserPrivilege": false,
"severity": "MEDIUM",
"userInteractionRequired": false
},
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"attackVector": "NETWORK",
"availabilityImpact": "NONE",
"baseScore": 4.8,
"baseSeverity": "MEDIUM",
"confidentialityImpact": "LOW",
"integrityImpact": "LOW",
"privilegesRequired": "NONE",
"scope": "UNCHANGED",
"userInteraction": "NONE",
"vectorString": "CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:N",
"version": "3.0"
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"exploitabilityScore": 2.2,
"impactScore": 2.5
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},
"lastModifiedDate": "2019-10-09T23:49Z",
"publishedDate": "2019-06-12T14:29Z"
}
}
}
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Sightings
| Author | Source | Type | Date |
|---|
Nomenclature
- Seen: The vulnerability was mentioned, discussed, or observed by the user.
- Confirmed: The vulnerability has been validated from an analyst's perspective.
- Published Proof of Concept: A public proof of concept is available for this vulnerability.
- Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
- Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
- Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
- Not confirmed: The user expressed doubt about the validity of the vulnerability.
- Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.
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