Overview
- Description
- The kex_input_kexinit function in kex.c in OpenSSH 6.x and 7.x through 7.3 allows remote attackers to cause a denial of service (memory consumption) by sending many duplicate KEXINIT requests. NOTE: a third party reports that "OpenSSH upstream does not consider this as a security issue."
- Source
- cve@mitre.org
- NVD status
- Modified
- CNA Tags
- disputed
Risk scores
CVSS 3.0
- Type
- Primary
- Base score
- 7.5
- Impact score
- 3.6
- Exploitability score
- 3.9
- Vector string
- CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
- Severity
- HIGH
CVSS 2.0
- Type
- Primary
- Base score
- 7.8
- Impact score
- 6.9
- Exploitability score
- 10
- Vector string
- AV:N/AC:L/Au:N/C:N/I:N/A:C
Weaknesses
- nvd@nist.gov
- CWE-399
Social media
- Hype score
- Not currently trending
Configurations
[
{
"nodes": [
{
"negate": false,
"cpeMatch": [
{
"criteria": "cpe:2.3:a:openbsd:openssh:6.8:*:*:*:*:*:*:*",
"vulnerable": true,
"matchCriteriaId": "65A8629A-CFAE-4403-BEE7-622912483702"
},
{
"criteria": "cpe:2.3:a:openbsd:openssh:6.9:*:*:*:*:*:*:*",
"vulnerable": true,
"matchCriteriaId": "D0607649-62FE-41CB-9444-53CD9C5B67C0"
},
{
"criteria": "cpe:2.3:a:openbsd:openssh:7.0:*:*:*:*:*:*:*",
"vulnerable": true,
"matchCriteriaId": "0B0FB8D5-75CB-4691-AB9F-B4FA46973421"
},
{
"criteria": "cpe:2.3:a:openbsd:openssh:7.1:*:*:*:*:*:*:*",
"vulnerable": true,
"matchCriteriaId": "67E1B240-BD86-41D3-BAC1-96005CB31DEE"
},
{
"criteria": "cpe:2.3:a:openbsd:openssh:7.2:*:*:*:*:*:*:*",
"vulnerable": true,
"matchCriteriaId": "2FC2BA97-6E7A-4AEF-8944-DB3AB8E14762"
},
{
"criteria": "cpe:2.3:a:openbsd:openssh:7.3:*:*:*:*:*:*:*",
"vulnerable": true,
"matchCriteriaId": "F5D3A31E-D785-406D-A8C8-FD122F4C9E38"
}
],
"operator": "OR"
}
]
}
]