Overview
- Description
- LibreSSL before 2.6.5 and 2.7.x before 2.7.4 allows a memory-cache side-channel attack on DSA and ECDSA signatures, aka the Return Of the Hidden Number Problem or ROHNP. To discover a key, the attacker needs access to either the local machine or a different virtual machine on the same physical host.
- Source
- cve@mitre.org
- NVD status
- Modified
Risk scores
CVSS 3.0
- Type
- Primary
- Base score
- 4.7
- Impact score
- 3.6
- Exploitability score
- 1
- Vector string
- CVSS:3.0/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:N/A:N
- Severity
- MEDIUM
CVSS 2.0
- Type
- Primary
- Base score
- 1.9
- Impact score
- 2.9
- Exploitability score
- 3.4
- Vector string
- AV:L/AC:M/Au:N/C:P/I:N/A:N
Weaknesses
- nvd@nist.gov
- CWE-200
Social media
- Hype score
- Not currently trending
Configurations
[
{
"nodes": [
{
"negate": false,
"cpeMatch": [
{
"criteria": "cpe:2.3:a:openbsd:libressl:*:*:*:*:*:*:*:*",
"vulnerable": true,
"matchCriteriaId": "0E0B0BEC-AEA8-49B1-9F6F-D68E9AF6E286",
"versionEndExcluding": "2.6.5"
},
{
"criteria": "cpe:2.3:a:openbsd:libressl:2.7.0:*:*:*:*:*:*:*",
"vulnerable": true,
"matchCriteriaId": "39DDFDEF-AD05-444B-8BCE-018EC7393F76"
},
{
"criteria": "cpe:2.3:a:openbsd:libressl:2.7.1:*:*:*:*:*:*:*",
"vulnerable": true,
"matchCriteriaId": "2D898BAE-26E6-43D4-AF78-A802AAAE4133"
},
{
"criteria": "cpe:2.3:a:openbsd:libressl:2.7.2:*:*:*:*:*:*:*",
"vulnerable": true,
"matchCriteriaId": "4B2CEB91-A7B2-49FC-A178-DADFD987D409"
},
{
"criteria": "cpe:2.3:a:openbsd:libressl:2.7.3:*:*:*:*:*:*:*",
"vulnerable": true,
"matchCriteriaId": "D3FC36B7-EBF7-478F-8D00-1FA201E081F4"
}
],
"operator": "OR"
}
]
}
]