Security Vulnerabilities fixed in dnsmasq RHSA-2021:0153

Description

The dnsmasq packages contain Dnsmasq, a lightweight DNS (Domain Name Server) forwarder and DHCP (Dynamic Host Configuration Protocol) server. Security Fix(es): dnsmasq: loose address/port check in reply_query() makes forging replies easier for an off-path attacker (CVE-2020-25684) dnsmasq: loose query name check in reply_query() makes forging replies easier for an off-path attacker (CVE-2020-25685) dnsmasq: multiple queries forwarded for the same name makes forging replies easier for an off-path attacker (CVE-2020-25686) dnsmasq: loose address/port check in reply_query() makes forging replies easier for an off-path attacker (CVE-2020-25684) dnsmasq: loose query name check in reply_query() makes forging replies easier for an off-path attacker (CVE-2020-25685) dnsmasq: multiple queries forwarded for the same name makes forging replies easier for an off-path attacker (CVE-2020-25686) For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.

Affected Applications

dnsmasq

CVE References

CVE-2020-25686 CVE-2020-25685 CVE-2020-25684

Other References

https://access.redhat.com/errata/RHSA-2021:0153