Bug 2494153 - CVE-2026-3592 dhcp: Amplification vulnerabilities via self-pointed glue records [fedora-all]
Summary: CVE-2026-3592 dhcp: Amplification vulnerabilities via self-pointed glue recor...
Keywords:
Status: CLOSED NOTABUG
Alias: None
Product: Fedora
Classification: Fedora
Component: dhcp
Version: rawhide
Hardware: Unspecified
OS: Unspecified
medium
medium
Target Milestone: ---
Assignee: Martin Osvald 🛹
QA Contact: Fedora Extras Quality Assurance
URL:
Whiteboard: {"flaws": ["3991d34b-a944-43d0-ac7a-0...
Depends On:
Blocks: CVE-2026-3592
TreeView+ depends on / blocked
 
Reported: 2026-06-29 11:33 UTC by Michal Findra
Modified: 2026-06-29 13:12 UTC (History)
5 users (show)

Fixed In Version:
Clone Of:
Environment:
Last Closed: 2026-06-29 13:12:16 UTC
Type: ---
Embargoed:


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Description Michal Findra 2026-06-29 11:33:54 UTC
Disclaimer: Community trackers are created by Red Hat Product Security team on a best effort basis. Package maintainers are required to ascertain if the flaw indeed affects their package, before starting the update process.

BIND resolvers are vulnerable to an amplified resource consumption/exhaustion attack. If a victim resolver makes a query to a specially crafted zone, the resolver will consume disproportionate resources.

Comment 1 Martin Osvald 🛹 2026-06-29 13:12:16 UTC
ISC DHCP is not affected. It doesn't act as a DNS resolver. This is a BIND server-side issue.

ISC DHCP uses portions of the ISC BIND libraries (primarily libdns, omapi, and libisccfg) only to support DDNS (TSIG support, DNS message construction/parsing, DHCID generation), OMAPI related operations, basic functions (configuration handling, data structures, logging, networking primitives).


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