DNSmasq.extract_name.Out.of.Bounds.Write

description-logoDescription

This indicates an attack attempt to exploit an Out of Bounds Write Vulnerability in Dnsmasq.
The vulnerability occurs while extracting domain name of a RR record using the extract_name() function while sorting multiple RR records. A remote, unauthenticated attacker can run a server to send a specially crafted DNS reply to a target server. Successful exploitation leads to denial-of-service conditions or in worst case arbitrary code execution with administrative privileges.

affected-products-logoAffected Products

Dnsmasq Dnsmasq prior to 2.83

Impact logoImpact

System Compromise: Remote attackers can gain control of vulnerable systems.

recomended-action-logoRecommended Actions

Apply the most recent upgrade or patch from the vendor.
http://lists.thekelleys.org.uk/pipermail/dnsmasq-discuss/2021q1/014599.html

Telemetry logoTelemetry

Coverage

IPS (Regular DB)
IPS (Extended DB)

Version Updates

Date Version Detail
2021-03-04 18.030 Default_action:pass:drop
2021-02-23 17.021