AZL-113221

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Import Source

https://github.com/microsoft/AzureLinuxVulnerabilityData/blob/main/osv/AZL-113221.json

JSON Data

https://api.osv.dev/v1/vulns/AZL-113221

Upstream

CVE-2026-123596

Published

2026-11-08T02:16:54Z

Modified

2026-11-14T05:30:17Z

Summary

CVE-2026-123596 affecting package netavark 1.10.3-9

Details

Hickory DNS hickory-proto through 0.26.0-alpha.1 and hickory-net 0.26.0-beta.1 before 0.26.2 contain a DNSSEC validation flaw in the validating recursor's NSEC handler that accepts parent-side ancestor-delegation NSEC records as proof of nonexistence for names below the zone cut. An on-path attacker, rogue parent nameserver, or attacker winning a port and TXID race can deliver one forged NXDOMAIN response built from genuinely signed parent NSEC records, causing authenticated denial of existing child-zone names cached for the negative TTL.

References

https://nvd.nist.gov/vuln/detail/CVE-2026-123596

Affected packages

Azure Linux:3 / netavark

Package

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

Affected ranges

Type: ECOSYSTEM
Events: Introduced

0 Unknown introduced version / All previous versions are affected

Last Affected

1.10.3-9

Database specific

source

"https://github.com/microsoft/AzureLinuxVulnerabilityData/blob/main/osv/AZL-113221.json"