CVE-2023-4236

CVSS 3.1 Score 7.5 of 10 (high)

Details

Published Sep 20, 2023
Updated: Feb 1, 2024
CWE ID 617

Summary

CVE-2023-4236 is a vulnerability in BIND 9, versions 9.18.0 through 9.18.18 and 9.18.11-S1 through 9.18.18-S1, related to a flaw in the networking code handling DNS-over-TLS queries. This flaw can lead to the termination of the "named" process due to an assertion failure when internal data structures are incorrectly reused under significant DNS-over-TLS query load. The vulnerability has a base severity rating of HIGH (7.5) and an exploitability score of 3.9 out of 10, indicating a potential danger to organizations using affected versions of BIND 9. To remediate this vulnerability, organizations should upgrade to a fixed version of BIND that addresses the issue.

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