CVE-2023-50387
EUVD-2023-5518214.02.2024, 16:15
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.Enginsight
Affected Products (NVD)
| 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_2012 | - |
| microsoft | windows_server_2016 | - |
| microsoft | windows_server_2019 | - |
| microsoft | windows_server_2022 | - |
| microsoft | windows_server_2022_23h2 | - |
| thekelleys | dnsmasq | 𝑥 < 2.90 |
| nic | knot_resolver | 𝑥 < 5.71 |
| powerdns | recursor | 4.8.0 ≤ 𝑥 < 4.8.6 |
| powerdns | recursor | 4.9.0 ≤ 𝑥 < 4.9.3 |
| powerdns | recursor | 5.0.0 ≤ 𝑥 < 5.0.2 |
| isc | bind | 9.0.0 ≤ 𝑥 ≤ 9.16.46 |
| isc | bind | 9.18.0 ≤ 𝑥 ≤ 9.18.22 |
| isc | bind | 9.19.0 ≤ 𝑥 ≤ 9.19.20 |
| nlnetlabs | unbound | 𝑥 < 1.19.1 |
𝑥
= Vulnerable software versions
Windows Releases
Platform | Version | ||||||
|---|---|---|---|---|---|---|---|
| Windows Server 2008 R2 |
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| Windows Server 2012 |
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| Windows Server 2012 R2 |
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| Windows Server 2016 |
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| Windows Server 2019 |
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| Windows Server 2022 |
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Debian Releases
Debian Product | |||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| bind9 |
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| dnsjava |
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| dnsmasq |
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| knot-resolver |
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| pdns-recursor |
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| systemd |
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| unbound |
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Ubuntu Releases
Ubuntu Product | |||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| bind9 |
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| bind9-libs |
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| dnsmasq |
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| isc-dhcp |
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| knot-resolver |
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| pdns-recursor |
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| unbound |
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References