fkie_cve-2018-20217
Vulnerability from fkie_nvd
Published
2018-12-26 21:29
Modified
2024-11-21 04:01
Severity ?
Summary
A Reachable Assertion issue was discovered in the KDC in MIT Kerberos 5 (aka krb5) before 1.17. If an attacker can obtain a krbtgt ticket using an older encryption type (single-DES, triple-DES, or RC4), the attacker can crash the KDC by making an S4U2Self request.
References
Impacted products
| Vendor | Product | Version | |
|---|---|---|---|
| mit | kerberos | * | |
| debian | debian_linux | 8.0 | |
| debian | debian_linux | 9.0 |
{
"configurations": [
{
"nodes": [
{
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"criteria": "cpe:2.3:a:mit:kerberos:*:*:*:*:*:*:*:*",
"matchCriteriaId": "47D60B1D-E4D9-4FF8-8C98-7ACCF81D3F24",
"versionEndExcluding": "5-1.17",
"vulnerable": true
}
],
"negate": false,
"operator": "OR"
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},
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"nodes": [
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},
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"cveTags": [],
"descriptions": [
{
"lang": "en",
"value": "A Reachable Assertion issue was discovered in the KDC in MIT Kerberos 5 (aka krb5) before 1.17. If an attacker can obtain a krbtgt ticket using an older encryption type (single-DES, triple-DES, or RC4), the attacker can crash the KDC by making an S4U2Self request."
},
{
"lang": "es",
"value": "Se ha descubierto un problema de aserci\u00f3n alcanzable en el KDC en MIT Kerberos 5 (tambi\u00e9n conocido como krb5), en versiones anteriores a la 1.17. Si un atacante puede obtener un ticket krbtgt mediante un tipo de cifrado m\u00e1s antiguo (DES, Triple DES o RC4), este puede provocar el cierre inesperado de KDC realizando una petici\u00f3n S4U2Self."
}
],
"id": "CVE-2018-20217",
"lastModified": "2024-11-21T04:01:06.130",
"metrics": {
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"authentication": "SINGLE",
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"baseScore": 3.5,
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"integrityImpact": "NONE",
"vectorString": "AV:N/AC:M/Au:S/C:N/I:N/A:P",
"version": "2.0"
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"scope": "UNCHANGED",
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"published": "2018-12-26T21:29:02.543",
"references": [
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"url": "http://krbdev.mit.edu/rt/Ticket/Display.html?id=8763"
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"tags": [
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"url": "https://security.netapp.com/advisory/ntap-20190416-0006/"
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],
"sourceIdentifier": "cve@mitre.org",
"vulnStatus": "Modified",
"weaknesses": [
{
"description": [
{
"lang": "en",
"value": "CWE-617"
}
],
"source": "nvd@nist.gov",
"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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