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The Internet Systems Consortium (ISC) has released patches to address multiple security vulnerabilities in the Berkeley Internet Name Domain (BIND) 9 Domain Name System (DNS) software suite that could lead to a denial-of-service (DoS) condition.

“A remote attacker could exploit these vulnerabilities to potentially cause denial-of-service conditions and system failures,” the U.S. Cybersecurity and Infrastructure Security Agency (CISA) said in an advisory released Friday.

The open source software is used by major financial firms, national and international carriers, internet service providers (ISPs), retailers, manufacturers, educational institutions, and government entities, according to its website.

All four flaws reside in named, a BIND9 service that functions as an authoritative nameserver for a fixed set of DNS zones or as a recursive resolver for clients on a local network.

images from Hacker News