fkie_cve-2025-5372
Vulnerability from fkie_nvd
Published
2025-07-04 06:15
Modified
2025-07-08 16:18
Severity ?
Summary
A flaw was found in libssh versions built with OpenSSL versions older than 3.0, specifically in the ssh_kdf() function responsible for key derivation. Due to inconsistent interpretation of return values where OpenSSL uses 0 to indicate failure and libssh uses 0 for success—the function may mistakenly return a success status even when key derivation fails. This results in uninitialized cryptographic key buffers being used in subsequent communication, potentially compromising SSH sessions' confidentiality, integrity, and availability.
References
Impacted products
| Vendor | Product | Version |
|---|
{
"cveTags": [],
"descriptions": [
{
"lang": "en",
"value": "A flaw was found in libssh versions built with OpenSSL versions older than 3.0, specifically in the ssh_kdf() function responsible for key derivation. Due to inconsistent interpretation of return values where OpenSSL uses 0 to indicate failure and libssh uses 0 for success\u2014the function may mistakenly return a success status even when key derivation fails. This results in uninitialized cryptographic key buffers being used in subsequent communication, potentially compromising SSH sessions\u0027 confidentiality, integrity, and availability."
},
{
"lang": "es",
"value": "Se encontr\u00f3 una falla en las versiones de libssh compiladas con versiones de OpenSSL anteriores a la 3.0, espec\u00edficamente en la funci\u00f3n ssh_kdf(), responsable de la derivaci\u00f3n de claves. Debido a la interpretaci\u00f3n inconsistente de los valores de retorno, donde OpenSSL usa 0 para indicar un fallo y libssh usa 0 para \u00e9xito, la funci\u00f3n puede devolver err\u00f3neamente un estado de \u00e9xito incluso cuando la derivaci\u00f3n de claves falla. Esto provoca que se utilicen b\u00faferes de claves criptogr\u00e1ficas sin inicializar en comunicaciones posteriores, lo que podr\u00eda comprometer la confidencialidad, integridad y disponibilidad de las sesiones SSH."
}
],
"id": "CVE-2025-5372",
"lastModified": "2025-07-08T16:18:53.607",
"metrics": {
"cvssMetricV31": [
{
"cvssData": {
"attackComplexity": "HIGH",
"attackVector": "NETWORK",
"availabilityImpact": "LOW",
"baseScore": 5.0,
"baseSeverity": "MEDIUM",
"confidentialityImpact": "LOW",
"integrityImpact": "LOW",
"privilegesRequired": "LOW",
"scope": "UNCHANGED",
"userInteraction": "NONE",
"vectorString": "CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:L/I:L/A:L",
"version": "3.1"
},
"exploitabilityScore": 1.6,
"impactScore": 3.4,
"source": "secalert@redhat.com",
"type": "Primary"
}
]
},
"published": "2025-07-04T06:15:24.930",
"references": [
{
"source": "secalert@redhat.com",
"url": "https://access.redhat.com/security/cve/CVE-2025-5372"
},
{
"source": "secalert@redhat.com",
"url": "https://bugzilla.redhat.com/show_bug.cgi?id=2369388"
}
],
"sourceIdentifier": "secalert@redhat.com",
"vulnStatus": "Undergoing Analysis",
"weaknesses": [
{
"description": [
{
"lang": "en",
"value": "CWE-682"
}
],
"source": "secalert@redhat.com",
"type": "Primary"
}
]
}
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Sightings
| Author | Source | Type | Date |
|---|
Nomenclature
- Seen: The vulnerability was mentioned, discussed, or seen somewhere by the user.
- Confirmed: The vulnerability is confirmed from an analyst perspective.
- Exploited: This vulnerability was exploited and seen by the user reporting the sighting.
- Patched: This vulnerability was successfully patched by the user reporting the sighting.
- Not exploited: This vulnerability was not exploited or seen by the user reporting the sighting.
- Not confirmed: The user expresses doubt about the veracity of the vulnerability.
- Not patched: This vulnerability was not successfully patched by the user reporting the sighting.
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