MediumFix available
nss — security advisory
When handling a SSLv2-compatible ClientHello request, the server doesn't generate a new random value but sends an all-zero value instead. This results in full malleability of the ClientHello for SSLv2 used for TLS 1.2 in all versions prior to NSS 3.39. This does not impact TLS 1.3.
- Products
- nss
- Affected versions
- Not specified
- Fixed versions
- 3.36.1-r1, 3.39-r0
- CVEs
- CVE-2018-12384
- Confirmed fixed CVEs
- Not specified
- Updated in this feed
- 31 Oct 2026, 21:57 UTC · Revision 1
Source evidence
When handling a SSLv2-compatible ClientHello request, the server doesn't generate a new random value but sends an all-zero value instead. This results in full malleability of the ClientHello for SSLv2 used for TLS 1.2 in all versions prior to NSS 3.39. This does not impact TLS 1.3.
osv:ALPINE-CVE-2018-12384
nss
Fixed versions: 3.39-r0
nss
Fixed versions: 3.39-r0
nss
Fixed versions: 3.39-r0
nss
Fixed versions: 3.39-r0
nss
Fixed versions: 3.39-r0
nss
Fixed versions: 3.39-r0
nss
Fixed versions: 3.39-r0
nss
Fixed versions: 3.39-r0
nss
Fixed versions: 3.39-r0
nss
Fixed versions: 3.36.1-r1
nss
Fixed versions: 3.39-r0
Complete source record
{
"id": "cbeb344bf09e43bdac3e8247ec8c4a689aa78446270ccff5e4bd85e3cdaaee8e",
"url": "https://osv.dev/vulnerability/ALPINE-CVE-2018-12384",
"method": "structured",
"payload": {
"kind": "advisory",
"title": "ALPINE-CVE-2018-12384",
"summary": "When handling a SSLv2-compatible ClientHello request, the server doesn't generate a new random value but sends an all-zero value instead. This results in full malleability of the ClientHello for SSLv2 used for TLS 1.2 in all versions prior to NSS 3.39. This does not impact TLS 1.3.",
"evidence": "osv:ALPINE-CVE-2018-12384",
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{
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{
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],
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],
"severity": "medium",
"structured": {
"id": "ALPINE-CVE-2018-12384",
"aliases": [
"ALPINE-CVE-2018-12384"
],
"metrics": [
{
"type": "CVSS_V3",
"score": "CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N"
}
],
"affected": [
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
},
{
"fixed": "3.39-r0"
}
]
}
],
"package": {
"name": "nss",
"purl": "pkg:apk/alpine/nss?arch=source",
"ecosystem": "Alpine:v3.10"
},
"database_specific": {
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},
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{
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"package": {
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"package": {
"name": "nss",
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"ecosystem": "Alpine:v3.19"
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"package": {
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"ecosystem": "Alpine:v3.22"
},
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"ecosystem": "Alpine:v3.23"
},
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"package": {
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},
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],
"package": {
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"ecosystem": "Alpine:v3.8"
},
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],
"modified": "2026-10-23T17:17:55.208640180Z",
"provider": "osv",
"upstream": [
"CVE-2018-12384"
],
"references": [
"https://security.alpinelinux.org/vuln/CVE-2018-12384"
]
},
"related_cves": [
{
"value": "CVE-2018-12384",
"evidence": "/upstream"
}
],
"security_relevant": true,
"severity_evidence": "/severity/0/score"
},
"source_id": "core-osv",
"document_id": 415007,
"published_at": "2019-04-29T15:29:00.247+00:00"
}