CVE-2023-5517
CVSS 3.1 Score 7.5 of 10 (high)
Details
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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