NIXPKGS-2026-2444

GitHub issue published 7 hours ago

Dnsmasq: infinite loop dos in dnssec nsec/nsec3 type bitmap parsing

Permalink CVE-2026-13002

4.4 MEDIUM

CVSS version (CVSS): 3.1
Attack Vector (AV): Local (L)
Attack Complexity (AC): Low (L)
Privileges Required (PR): High (H)
User Interaction (UI): None (N)
Scope (S): Unchanged (U)
Confidentiality (C): None (N)
Integrity (I): None (N)
Availability (A): High (H)
Modified Attack Vector (MAV): Local (L)
Modified Attack Complexity (MAC): Low (L)
Modified Privileges Required (MPR): High (H)
Modified User Interaction (MUI): None (N)
Modified Confidentiality (MC): None (N)
Modified Scope (MS): Unchanged (U)
Modified Integrity (MI): None (N)
Modified Availability (MA): High (H)

updated 7 hours ago by @LeSuisse Activity log

Created suggestion 2 days, 15 hours ago
@LeSuisse ignored package prometheus-dnsmasq-exporter 2 days, 2 hours ago
@LeSuisse accepted 2 days, 2 hours ago
@LeSuisse published on GitHub 7 hours ago

Dnsmasq: infinite loop dos in dnssec nsec/nsec3 type bitmap parsing

A flow has been identified into dnssec.c library, causing an infinite loop to dnsmasq service. An attacker who controls any DNSSEC-signed zone can hang the dnsmasq process with a single crafted response, killing all DNS resolution for its clients.