MediumFix available
botan — security advisory
Botan 2.5.0 through 2.6.0 before 2.7.0 allows a memory-cache side-channel attack on ECDSA signatures, aka the Return Of the Hidden Number Problem or ROHNP, related to dsa/dsa.cpp, ec_group/ec_group.cpp, and ecdsa/ecdsa.cpp. To discover an ECDSA key, the attacker needs access to either the local machine or a different virtual machine on the same physical host.
- Products
- botan
- Affected versions
- Not specified
- Fixed versions
- 2.7.0-r0
- CVEs
- CVE-2018-12435
- Confirmed fixed CVEs
- Not specified
- Updated in this feed
- 31 Oct 2026, 21:57 UTC · Revision 1
Source evidence
Botan 2.5.0 through 2.6.0 before 2.7.0 allows a memory-cache side-channel attack on ECDSA signatures, aka the Return Of the Hidden Number Problem or ROHNP, related to dsa/dsa.cpp, ec_group/ec_group.cpp, and ecdsa/ecdsa.cpp. To discover an ECDSA key, the attacker needs access to either the local machine or a different virtual machine on the same physical host.
osv:ALPINE-CVE-2018-12435
botan
Fixed versions: 2.7.0-r0
botan
Fixed versions: 2.7.0-r0
botan
Fixed versions: 2.7.0-r0
botan
Fixed versions: 2.7.0-r0
botan
Fixed versions: 2.7.0-r0
botan
Fixed versions: 2.7.0-r0
botan
Fixed versions: 2.7.0-r0
botan
Fixed versions: 2.7.0-r0
botan
Fixed versions: 2.7.0-r0
botan
Fixed versions: 2.7.0-r0
botan
Fixed versions: 2.7.0-r0
Complete source record
{
"id": "cc02988f6ff6b2ca028e0636f942c747fac482df79cd32c4104fbcc67804ef70",
"url": "https://osv.dev/vulnerability/ALPINE-CVE-2018-12435",
"method": "structured",
"payload": {
"kind": "advisory",
"title": "ALPINE-CVE-2018-12435",
"summary": "Botan 2.5.0 through 2.6.0 before 2.7.0 allows a memory-cache side-channel attack on ECDSA signatures, aka the Return Of the Hidden Number Problem or ROHNP, related to dsa/dsa.cpp, ec_group/ec_group.cpp, and ecdsa/ecdsa.cpp. To discover an ECDSA key, the attacker needs access to either the local machine or a different virtual machine on the same physical host.",
"evidence": "osv:ALPINE-CVE-2018-12435",
"products": [
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},
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{
"value": "2.7.0-r0",
"evidence": "/affected/0/ranges"
}
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},
{
"name": {
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"evidence": "/affected/1/package/name"
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{
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{
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{
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{
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{
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{
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},
{
"name": {
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{
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"affected_versions": []
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{
"name": {
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],
"affected_versions": []
}
],
"severity": "medium",
"structured": {
"id": "ALPINE-CVE-2018-12435",
"aliases": [
"ALPINE-CVE-2018-12435"
],
"metrics": [
{
"type": "CVSS_V3",
"score": "CVSS:3.0/AV:L/AC:H/PR:N/UI:N/S:C/C:H/I:N/A:N"
}
],
"affected": [
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "2.5.0"
},
{
"fixed": "2.7.0-r0"
}
]
}
],
"package": {
"name": "botan",
"purl": "pkg:apk/alpine/botan?arch=source",
"ecosystem": "Alpine:v3.11"
},
"database_specific": {
"source": "https://storage.googleapis.com/cve-osv-conversion/alpine/ALPINE-CVE-2018-12435.json"
},
"ecosystem_specific": {}
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{
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{
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}
],
"package": {
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"purl": "pkg:apk/alpine/botan?arch=source",
"ecosystem": "Alpine:v3.12"
},
"database_specific": {
"source": "https://storage.googleapis.com/cve-osv-conversion/alpine/ALPINE-CVE-2018-12435.json"
},
"ecosystem_specific": {}
},
{
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{
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}
],
"package": {
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"purl": "pkg:apk/alpine/botan?arch=source",
"ecosystem": "Alpine:v3.13"
},
"database_specific": {
"source": "https://storage.googleapis.com/cve-osv-conversion/alpine/ALPINE-CVE-2018-12435.json"
},
"ecosystem_specific": {}
},
{
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{
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{
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{
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]
}
],
"package": {
"name": "botan",
"purl": "pkg:apk/alpine/botan?arch=source",
"ecosystem": "Alpine:v3.14"
},
"database_specific": {
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},
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{
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],
"package": {
"name": "botan",
"purl": "pkg:apk/alpine/botan?arch=source",
"ecosystem": "Alpine:v3.15"
},
"database_specific": {
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],
"package": {
"name": "botan",
"purl": "pkg:apk/alpine/botan?arch=source",
"ecosystem": "Alpine:v3.16"
},
"database_specific": {
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],
"package": {
"name": "botan",
"purl": "pkg:apk/alpine/botan?arch=source",
"ecosystem": "Alpine:v3.17"
},
"database_specific": {
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},
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],
"package": {
"name": "botan",
"purl": "pkg:apk/alpine/botan?arch=source",
"ecosystem": "Alpine:v3.18"
},
"database_specific": {
"source": "https://storage.googleapis.com/cve-osv-conversion/alpine/ALPINE-CVE-2018-12435.json"
},
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{
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}
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}
],
"package": {
"name": "botan",
"purl": "pkg:apk/alpine/botan?arch=source",
"ecosystem": "Alpine:v3.19"
},
"database_specific": {
"source": "https://storage.googleapis.com/cve-osv-conversion/alpine/ALPINE-CVE-2018-12435.json"
},
"ecosystem_specific": {}
},
{
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}
]
}
],
"package": {
"name": "botan",
"purl": "pkg:apk/alpine/botan?arch=source",
"ecosystem": "Alpine:v3.20"
},
"database_specific": {
"source": "https://storage.googleapis.com/cve-osv-conversion/alpine/ALPINE-CVE-2018-12435.json"
},
"ecosystem_specific": {}
},
{
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{
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],
"package": {
"name": "botan",
"purl": "pkg:apk/alpine/botan?arch=source",
"ecosystem": "Alpine:v3.21"
},
"database_specific": {
"source": "https://storage.googleapis.com/cve-osv-conversion/alpine/ALPINE-CVE-2018-12435.json"
},
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}
],
"modified": "2026-10-23T17:17:55.208821861Z",
"provider": "osv",
"upstream": [
"CVE-2018-12435"
],
"references": [
"https://security.alpinelinux.org/vuln/CVE-2018-12435"
]
},
"related_cves": [
{
"value": "CVE-2018-12435",
"evidence": "/upstream"
}
],
"security_relevant": true,
"severity_evidence": "/severity/0/score"
},
"source_id": "core-osv",
"document_id": 415009,
"published_at": "2018-06-15T02:29:00.377+00:00"
}