AZL-34419

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Import Source

https://github.com/microsoft/AzureLinuxVulnerabilityData/blob/main/osv/AZL-34419.json

JSON Data

https://api.test.osv.dev/v1/vulns/AZL-34419

Upstream

CVE-2023-50387

Published

2024-02-14T16:15:45Z

Modified

2026-04-01T05:11:27.505078Z

Severity

7.5 (High) CVSS_V3 - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H CVSS Calculator

Summary

CVE-2023-50387 affecting package dnsmasq for versions less than 2.90-1

Details

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

https://nvd.nist.gov/vuln/detail/CVE-2023-50387

Affected packages

Azure Linux:2 / dnsmasq

Package

Name: dnsmasq
Purl: pkg:rpm/azure-linux/dnsmasq

Affected ranges

Type: ECOSYSTEM
Events: Introduced

0Unknown introduced version / All previous versions are affected

Fixed

2.90-1

Database specific

source

"https://github.com/microsoft/AzureLinuxVulnerabilityData/blob/main/osv/AZL-34419.json"