Overview
- Description
- 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.
- Source
- cve@mitre.org
- NVD status
- Modified
Risk scores
CVSS 3.0
- Type
- Primary
- Base score
- 5.9
- Impact score
- 4
- Exploitability score
- 1.4
- Vector string
- CVSS:3.0/AV:L/AC:H/PR:N/UI:N/S:C/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:botan_project:botan:*:*:*:*:*:*:*:*",
"vulnerable": true,
"matchCriteriaId": "416ED13A-040B-4ED0-ACAD-9EC53C2EBE6C",
"versionEndIncluding": "2.7.0",
"versionStartIncluding": "2.5.0"
}
],
"operator": "OR"
}
]
}
]