CVE-2023-5517: bind — Fix

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.

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CVSS v3.1 Score

7.5

HIGH

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

Weakness Type (CWE)

CWE-617 CWE-617

Affected Products

Vendor	Product	Versions
netapp	active_iq_unified_manager	All
fedoraproject	fedora	All
fedoraproject	fedora	All
isc	bind	9.12.0 — 9.16.45
isc	bind	9.18.0 — 9.18.21
isc	bind	9.19.0 — 9.19.19
isc	bind	All
isc	bind	All
isc	bind	All
isc	bind	All
isc	bind	All
isc	bind	All
isc	bind	All
isc	bind	All
isc	bind	All
isc	bind	All
isc	bind	All
isc	bind	All
isc	bind	All

References

Advisories & Patches

https://kb.isc.org/docs/cve-2023-5517 https://kb.isc.org/docs/cve-2023-5517

Other References

http://www.openwall.com/lists/oss-security/2024/02/13/1 https://lists.fedoraproject.org/archives/list/[email protected]/message/HVRDSJVZKMCXKKPP6PNR62T7RWZ3YSDZ/ https://lists.fedoraproject.org/archives/list/[email protected]/message/PNNHZSZPG2E7NBMBNYPGHCFI4V4XRWNQ/ https://lists.fedoraproject.org/archives/list/[email protected]/message/RGS7JN6FZXUSTC2XKQHH27574XOULYYJ/ https://lists.fedoraproject.org/archives/list/[email protected]/message/ZDZFMEKQTZ4L7RY46FCENWFB5MDT263R/ https://security.netapp.com/advisory/ntap-20240503-0006/ http://www.openwall.com/lists/oss-security/2024/02/13/1 https://lists.fedoraproject.org/archives/list/[email protected]/message/HVRDSJVZKMCXKKPP6PNR62T7RWZ3YSDZ/ https://lists.fedoraproject.org/archives/list/[email protected]/message/PNNHZSZPG2E7NBMBNYPGHCFI4V4XRWNQ/ https://lists.fedoraproject.org/archives/list/[email protected]/message/RGS7JN6FZXUSTC2XKQHH27574XOULYYJ/

Frequently Asked Questions

What is CVE-2023-5517? +

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. It has a CVSS v3.1 base score of 7.5 (HIGH).

How severe is CVE-2023-5517? +

CVE-2023-5517 has a CVSS v3.1 score of 7.5 out of 10, rated HIGH. This is a high-severity vulnerability that should be prioritized for patching.

What products are affected by CVE-2023-5517? +

CVE-2023-5517 affects products from fedoraproject, isc, netapp, specifically: active_iq_unified_manager, bind, fedora. Check the affected products table above for specific version ranges.

How do I check if I'm vulnerable to CVE-2023-5517? +

You can use Secably's free Website Scanner to check your website for known vulnerabilities. For infrastructure scanning, use the Port Scanner to identify exposed services that may be affected. Check the vendor advisories linked above for specific patch and version information.

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