fkie_cve-2013-0176
Vulnerability from fkie_nvd
Published
2013-02-05 23:55
Modified
2025-04-11 00:51
Severity ?
Summary
The publickey_from_privatekey function in libssh before 0.5.4, when no algorithm is matched during negotiations, allows remote attackers to cause a denial of service (NULL pointer dereference and crash) via a "Client: Diffie-Hellman Key Exchange Init" packet.
References
Impacted products
{
"configurations": [
{
"nodes": [
{
"cpeMatch": [
{
"criteria": "cpe:2.3:a:libssh:libssh:*:*:*:*:*:*:*:*",
"matchCriteriaId": "F3619856-CA8F-455D-BC33-E6BA533C4165",
"versionEndIncluding": "0.5.3",
"vulnerable": true
},
{
"criteria": "cpe:2.3:a:libssh:libssh:0.4.7:*:*:*:*:*:*:*",
"matchCriteriaId": "EA0F1552-63D8-4E97-A44A-EF55E8A330B7",
"vulnerable": true
},
{
"criteria": "cpe:2.3:a:libssh:libssh:0.4.8:*:*:*:*:*:*:*",
"matchCriteriaId": "6514D889-F87F-44D1-9C7B-5BE75676DCFF",
"vulnerable": true
},
{
"criteria": "cpe:2.3:a:libssh:libssh:0.5.0:*:*:*:*:*:*:*",
"matchCriteriaId": "A80094C5-1273-43AB-9E1E-096D8B0A60BB",
"vulnerable": true
},
{
"criteria": "cpe:2.3:a:libssh:libssh:0.5.0:rc1:*:*:*:*:*:*",
"matchCriteriaId": "CF67514C-3240-42A4-9996-21E855104C59",
"vulnerable": true
},
{
"criteria": "cpe:2.3:a:libssh:libssh:0.5.1:*:*:*:*:*:*:*",
"matchCriteriaId": "7BBD0BC3-2467-414E-BD82-2A5778B810F9",
"vulnerable": true
},
{
"criteria": "cpe:2.3:a:libssh:libssh:0.5.2:*:*:*:*:*:*:*",
"matchCriteriaId": "3D611A20-8A47-43DE-A6EC-90977C227C64",
"vulnerable": true
}
],
"negate": false,
"operator": "OR"
}
]
}
],
"cveTags": [],
"descriptions": [
{
"lang": "en",
"value": "The publickey_from_privatekey function in libssh before 0.5.4, when no algorithm is matched during negotiations, allows remote attackers to cause a denial of service (NULL pointer dereference and crash) via a \"Client: Diffie-Hellman Key Exchange Init\" packet."
},
{
"lang": "es",
"value": "La funci\u00f3n publickey_from_privatekey en libssh anterior a v0.5.4, cuando ningun algoritmo coincide durante la negociacion, permite a atacantes remotos causar una denegaci\u00f3n de servicio (referencia NULL y ca\u00edda de la aplicaci\u00f3n) mediante un paquete \"Client: Diffie-Hellman Key Exchange Init\""
}
],
"id": "CVE-2013-0176",
"lastModified": "2025-04-11T00:51:21.963",
"metrics": {
"cvssMetricV2": [
{
"acInsufInfo": false,
"baseSeverity": "MEDIUM",
"cvssData": {
"accessComplexity": "MEDIUM",
"accessVector": "NETWORK",
"authentication": "NONE",
"availabilityImpact": "PARTIAL",
"baseScore": 4.3,
"confidentialityImpact": "NONE",
"integrityImpact": "NONE",
"vectorString": "AV:N/AC:M/Au:N/C:N/I:N/A:P",
"version": "2.0"
},
"exploitabilityScore": 8.6,
"impactScore": 2.9,
"obtainAllPrivilege": false,
"obtainOtherPrivilege": false,
"obtainUserPrivilege": false,
"source": "nvd@nist.gov",
"type": "Primary",
"userInteractionRequired": false
}
]
},
"published": "2013-02-05T23:55:01.850",
"references": [
{
"source": "secalert@redhat.com",
"url": "http://lists.fedoraproject.org/pipermail/package-announce/2013-February/098065.html"
},
{
"source": "secalert@redhat.com",
"url": "http://lists.fedoraproject.org/pipermail/package-announce/2013-February/098094.html"
},
{
"source": "secalert@redhat.com",
"tags": [
"Vendor Advisory"
],
"url": "http://secunia.com/advisories/51982"
},
{
"source": "secalert@redhat.com",
"tags": [
"Patch",
"Vendor Advisory"
],
"url": "http://www.libssh.org/2013/01/22/libssh-0-5-4-security-release/"
},
{
"source": "secalert@redhat.com",
"url": "http://www.ubuntu.com/usn/USN-1707-1"
},
{
"source": "secalert@redhat.com",
"url": "https://exchange.xforce.ibmcloud.com/vulnerabilities/81595"
},
{
"source": "af854a3a-2127-422b-91ae-364da2661108",
"url": "http://lists.fedoraproject.org/pipermail/package-announce/2013-February/098065.html"
},
{
"source": "af854a3a-2127-422b-91ae-364da2661108",
"url": "http://lists.fedoraproject.org/pipermail/package-announce/2013-February/098094.html"
},
{
"source": "af854a3a-2127-422b-91ae-364da2661108",
"tags": [
"Vendor Advisory"
],
"url": "http://secunia.com/advisories/51982"
},
{
"source": "af854a3a-2127-422b-91ae-364da2661108",
"tags": [
"Patch",
"Vendor Advisory"
],
"url": "http://www.libssh.org/2013/01/22/libssh-0-5-4-security-release/"
},
{
"source": "af854a3a-2127-422b-91ae-364da2661108",
"url": "http://www.ubuntu.com/usn/USN-1707-1"
},
{
"source": "af854a3a-2127-422b-91ae-364da2661108",
"url": "https://exchange.xforce.ibmcloud.com/vulnerabilities/81595"
}
],
"sourceIdentifier": "secalert@redhat.com",
"vulnStatus": "Deferred",
"weaknesses": [
{
"description": [
{
"lang": "en",
"value": "CWE-399"
}
],
"source": "nvd@nist.gov",
"type": "Primary"
}
]
}
Loading…
Loading…
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.
Loading…
Loading…