CVE-2023-5517

CVSS 3.1 Score 7.5 of 10 (high)

Details

Published Feb 13, 2024
Updated: May 3, 2024
CWE ID 617

Summary

CVE-2023-5517 is a vulnerability affecting various versions of BIND 9, including 9.12.0 through 9.16.45, 9.18.0 through 9.18.21, 9.19.0 through 9.19.19, 9.16.8-S1 through 9.16.45-S1, and 9.18.11-S1 through 9.18.21-S1. This issue arises from a flaw in BIND's query-handling code, which can lead to an assertion failure when `nxdomain-redirect <domain>;` is configured and the resolver encounters a PTR query for an RFC 1918 address that would typically result in an authoritative NXDOMAIN response. This premature exit can potentially enable attackers to bypass intended security measures and gain unauthorized access to networks or services.

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Affected Products

  • BIND

Affected Vendors

  • Internet Systems Consortium

Advisories, Assessments, and Mitigations

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