- Description
- When a libcurl-based application performs transfers via `SCP://` or `SFTP://` and utilizes the `CURLOPT_SSH_KEYFUNCTION` callback, it may silently accept an untrusted server. This vulnerability occurs when a server presents a host key type that does not match the specific key type already recorded for that host in the `known_hosts` file. Instead of rejecting the mismatch, the callback mechanism fails to properly enforce the restriction, allowing the connection to succeed without warning and risking a potential man-in-the-middle attack.
- Source
- 2499f714-1537-4658-8207-48ae4bb9eae9
- NVD status
- Analyzed
- Products
- curl
CVSS 3.1
- Type
- Secondary
- Base score
- 7.4
- Impact score
- 5.2
- Exploitability score
- 2.2
- Vector string
- CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N
- Severity
- HIGH
- Hype score
- Not currently trending
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{
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"cpeMatch": [
{
"criteria": "cpe:2.3:a:haxx:curl:*:*:*:*:*:*:*:*",
"matchCriteriaId": "384FD0B4-826D-4A6C-9F78-BC25B9039011",
"versionEndExcluding": "8.21.0",
"versionStartIncluding": "7.69.0",
"vulnerable": true
}
],
"negate": false,
"operator": "OR"
}
]
}
]