CVE-2023-5517 Information

Description

A flaw in query-handling code can cause named to exit prematurely with an assertion failure when:

• nxdomain-redirect <domain>; is configured and
• the resolver receives a PTR query for an RFC 1918 address that would normally result in an authoritative NXDOMAIN response. This issue affects BIND 9 versions 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.

CVSS Vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Reference

https://kb.isc.org/docs/cve-2023-5517 http://www.openwall.com/lists/oss-security/2024/02/13/1

Attack Complexity

LOW

Privileges Required

NONE

User Interaction Required

NONE

Scope

NONE

Confidentiality Impact

UNCHANGED

Integrity Impact

NONE

Availability Impact

NONE

Base Score

HIGH

Base Severity

7.5