CVE-2023-4408

A flaw was found in the bind package. This issue may allow a remote attacker with no specific privileges to craft a specially long DNS message leading to an excessive and uncontrolled CPU usage, the server being unavailable, and a Denial of Service.

This vulnerability in the DNS message parsing code of BIND is of important severity due to its potential to cause excessive and uncontrolled CPU usage through specially crafted DNS queries or responses. The flaw exposes both authoritative DNS servers and recursive resolvers to Denial of Service (DoS) attacks, where an attacker can exploit the high computational complexity of the parsing routine to overwhelm the server. This can lead to significant degradation of service, rendering the DNS server unresponsive and disrupting network operations.

The CVSS score(s) listed for this vulnerability do not reflect the associated product's status, and are included for informational purposes to better understand the severity of this vulnerability.

Mitigation for this issue is either not available or the currently available options don't meet the Red Hat Product Security criteria comprising ease of use and deployment, applicability to widespread installation base or stability.