High
Security advisory
In FreeRADIUS 3.0.x before 3.0.20, the EAP-pwd module used a global OpenSSL BN_CTX instance to handle all handshakes. This mean multiple threads use the same BN_CTX instance concurrently, resulting in crashes when concurrent EAP-pwd handshakes are initiated. This can be abused by an adversary as a Denial-of-Service (DoS) attack.
- Products
- Not specified
- Affected versions
- Not specified
- Fixed versions
- Not specified
- CVEs
- CVE-2019-17185
- Confirmed fixed CVEs
- Not specified
- Updated in this feed
- 31 Oct 2026, 10:37 UTC · Revision 1
Source evidence
In FreeRADIUS 3.0.x before 3.0.20, the EAP-pwd module used a global OpenSSL BN_CTX instance to handle all handshakes. This mean multiple threads use the same BN_CTX instance concurrently, resulting in crashes when concurrent EAP-pwd handshakes are initiated. This can be abused by an adversary as a Denial-of-Service (DoS) attack.
osv:CVE-2019-17185
Complete source record
{
"id": "0f73414fe7ff7a7ad0ea1310bc817d53a6b562d607979898bc6eac3225adff32",
"url": "https://osv.dev/vulnerability/CVE-2019-17185",
"method": "structured",
"payload": {
"kind": "advisory",
"title": "CVE-2019-17185",
"summary": "In FreeRADIUS 3.0.x before 3.0.20, the EAP-pwd module used a global OpenSSL BN_CTX instance to handle all handshakes. This mean multiple threads use the same BN_CTX instance concurrently, resulting in crashes when concurrent EAP-pwd handshakes are initiated. This can be abused by an adversary as a Denial-of-Service (DoS) attack.",
"evidence": "osv:CVE-2019-17185",
"products": [],
"severity": "high",
"structured": {
"id": "CVE-2019-17185",
"aliases": [
"CVE-2019-17185"
],
"metrics": [
{
"type": "CVSS_V3",
"score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H"
}
],
"affected": [
{
"ranges": [
{
"repo": "https://github.com/freeradius/freeradius-server",
"type": "GIT",
"events": [
{
"introduced": "580424ea12feeb5933f1aaac33fd5f9e2fa2ee60"
},
{
"fixed": "d94c953ab9602a238433ba18533111b845fd8e9e"
}
],
"database_specific": {
"extracted_events": [
{
"cpe": "cpe:2.3:a:freeradius:freeradius:*:*:*:*:*:*:*:*",
"range": [
{
"introduced": "3.0.0"
},
{
"fixed": "3.0.20"
}
],
"source": "CPE_RANGE"
},
{
"range": [
{
"fixed": "d94c953ab9602a238433ba18533111b845fd8e9e"
}
],
"source": "REFERENCES_TAG",
"original_tag": "release_3_0_20"
}
]
}
}
],
"versions": [
"release_3_0_19",
"release_3_0_18",
"release_3_0_17",
"release_3_0_16",
"release_3_0_15",
"release_3_0_14",
"release_3_0_13",
"release_3_0_12",
"release_3_0_11",
"release_3_0_10",
"release_3_0_9",
"release_3_0_8",
"release_3.0.8",
"release_3_0_7",
"release_3_0_6",
"release_3_0_5",
"release_3_0_4_rc2",
"release_3_0_4_rc1",
"release_3_0_4_rc0",
"release_3_0_3",
"release_3_0_2",
"release_3_0_1",
"release_3_0_0"
],
"database_specific": {
"source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2019-17185.json"
}
}
],
"modified": "2026-10-20T10:50:48.410241825Z",
"provider": "osv",
"references": [
"https://freeradius.org/security/",
"https://github.com/FreeRADIUS/freeradius-server/releases/tag/release_3_0_20"
],
"provider_metadata": {
"unresolved_ranges": [
{
"cpes": [
"cpe:2.3:o:opensuse:leap:15.1:*:*:*:*:*:*:*"
],
"vendor_product": "opensuse:leap",
"extracted_events": [
{
"range": [
{
"introduced": "15.1"
},
{
"last_affected": "15.1"
}
],
"source": "CPE_STRING"
}
]
}
]
}
},
"related_cves": [
{
"value": "CVE-2019-17185",
"evidence": "/id"
}
],
"security_relevant": true,
"severity_evidence": "/severity/0/score"
},
"source_id": "core-osv",
"document_id": 382190,
"published_at": "2020-03-21T01:15:12.243+00:00"
}