fkie_cve-2023-50387
Vulnerability from fkie_nvd
Published
2024-02-14 16:15
Modified
2024-11-21 08:36
Severity ?
Summary
Certain DNSSEC aspects of the DNS protocol (in RFC 4033, 4034, 4035, 6840, and related RFCs) allow remote attackers to cause a denial of service (CPU consumption) via one or more DNSSEC responses, aka the "KeyTrap" issue. One of the concerns is that, when there is a zone with many DNSKEY and RRSIG records, the protocol specification implies that an algorithm must evaluate all combinations of DNSKEY and RRSIG records.
References
Impacted products
| Vendor | Product | Version | |
|---|---|---|---|
| redhat | enterprise_linux | 6.0 | |
| redhat | enterprise_linux | 7.0 | |
| redhat | enterprise_linux | 8.0 | |
| redhat | enterprise_linux | 9.0 | |
| microsoft | windows_server_2008 | r2 | |
| microsoft | windows_server_2012 | - | |
| microsoft | windows_server_2012 | r2 | |
| microsoft | windows_server_2016 | - | |
| microsoft | windows_server_2019 | - | |
| microsoft | windows_server_2022 | - | |
| microsoft | windows_server_2022_23h2 | - | |
| fedoraproject | fedora | 39 | |
| thekelleys | dnsmasq | * | |
| nic | knot_resolver | * | |
| powerdns | recursor | * | |
| powerdns | recursor | * | |
| powerdns | recursor | * | |
| isc | bind | * | |
| isc | bind | * | |
| isc | bind | * | |
| nlnetlabs | unbound | * |
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"value": "Certain DNSSEC aspects of the DNS protocol (in RFC 4033, 4034, 4035, 6840, and related RFCs) allow remote attackers to cause a denial of service (CPU consumption) via one or more DNSSEC responses, aka the \"KeyTrap\" issue. One of the concerns is that, when there is a zone with many DNSKEY and RRSIG records, the protocol specification implies that an algorithm must evaluate all combinations of DNSKEY and RRSIG records."
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"id": "CVE-2023-50387",
"lastModified": "2024-11-21T08:36:56.937",
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"confidentialityImpact": "NONE",
"integrityImpact": "NONE",
"privilegesRequired": "NONE",
"scope": "UNCHANGED",
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"url": "https://www.securityweek.com/keytrap-dns-attack-could-disable-large-parts-of-internet-researchers/"
},
{
"source": "af854a3a-2127-422b-91ae-364da2661108",
"tags": [
"Patch",
"Third Party Advisory"
],
"url": "https://www.theregister.com/2024/02/13/dnssec_vulnerability_internet/"
}
],
"sourceIdentifier": "cve@mitre.org",
"vulnStatus": "Modified",
"weaknesses": [
{
"description": [
{
"lang": "en",
"value": "CWE-770"
}
],
"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.