GLSA 202101-17: Dnsmasq: Multiple vulnerabilities

http://security.gentoo.org/

Severity:	normal
Title:	Dnsmasq: Multiple vulnerabilities
Date:	01/22/2021
Bugs:	#766126
ID:	202101-17

Synopsis

Multiple vulnerabilities have been found in Dnsmasq, the worst of which may allow remote attackers to execute arbitrary code.

Background

Dnsmasq is a lightweight and easily-configurable DNS forwarder and DHCP server.

Affected packages

Package	Vulnerable	Unaffected	Architecture(s)
net-dns/dnsmasq	< 2.83	>= 2.83	All supported architectures

Description

Multiple vulnerabilities have been discovered in Dnsmasq. Please review the references below for details.

Impact

An attacker, by sending specially crafted DNS replies, could possibly execute arbitrary code with the privileges of the process, perform a cache poisoning attack or cause a Denial of Service condition.

Workaround

There is no known workaround at this time.

Resolution

All Dnsmasq users should upgrade to the latest version:

      # emerge --sync
      # emerge --ask --oneshot --verbose ">=net-dns/dnsmasq-2.83"

References

Availability

This GLSA and any updates to it are available for viewing at the Gentoo Security Website: http://security.gentoo.org/glsa/glsa-202101-17.xml

Concerns?

Security is a primary focus of Gentoo Linux and ensuring the confidentiality and security of our users machines is of utmost importance to us. Any security concerns should be addressed to security@gentoo.org or alternatively, you may file a bug at https://bugs.gentoo.org.