Bug 2568705 (CVE-2026-123595)
| Summary: | CVE-2026-123595 hickory-proto: hickory-net: Hickory DNS: Denial of Service via improper DNSSEC validation | ||
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| Product: | [Other] Security Response | Reporter: | OSIDB Bzimport <bzimport> |
| Component: | vulnerability | Assignee: | Product Security DevOps Team <prodsec-dev> |
| Status: | NEW --- | QA Contact: | |
| Severity: | medium | Docs Contact: | |
| Priority: | medium | ||
| Version: | unspecified | CC: | dbosanac, jcantril, jlanda, jreimann, kshier, mdessi, mrizzi, pcattana, rbobbitt, rhel-process-autobot, rojacob, simaishi, stcannon, watson-tool-maintainers, yguenane |
| Target Milestone: | --- | Keywords: | Security |
| Target Release: | --- | ||
| Hardware: | All | ||
| OS: | Linux | ||
| Whiteboard: | |||
| Fixed In Version: | Doc Type: | --- | |
| Doc Text: |
A flaw was found in Hickory DNS. The recursive resolver fails to properly verify the type bitmap during Domain Name System Security Extensions (DNSSEC) validation when handling NSEC3 records, improperly accepting parent-zone records as proof that a domain does not exist. A remote attacker can exploit this issue by delivering manipulated responses, causing the resolver to cache false nonexistence responses and resulting in a Denial of Service (DoS) that prevents legitimate domain names from being resolved.
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Story Points: | --- |
| Clone Of: | Environment: | ||
| Last Closed: | Type: | --- | |
| Regression: | --- | Mount Type: | --- |
| Documentation: | --- | CRM: | |
| Verified Versions: | Category: | --- | |
| oVirt Team: | --- | RHEL 7.3 requirements from Atomic Host: | |
| Cloudforms Team: | --- | Target Upstream Version: | |
| Embargoed: | |||
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Description
OSIDB Bzimport
2026-11-08 02:00:23 UTC
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