CVE-2023-5517
moderate-risk
Published 2024-02-13
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.
Do I need to act?
-
0.14% chance of exploitation
EPSS score — low exploit probability
-
Not on CISA KEV list
No confirmed active exploitation reported to CISA
?
Patch status unknown
Check vendor advisories for fix availability and mitigation guidance
7
CVSS 7.5/10
High
NETWORK
/ LOW complexity
Affected Products (17)
Affected Vendors
References (14)
Vendor Advisory
https://kb.isc.org/docs/cve-2023-5517
Third Party Advisory
https://security.netapp.com/advisory/ntap-20240503-0006/
Vendor Advisory
https://kb.isc.org/docs/cve-2023-5517
Third Party Advisory
https://security.netapp.com/advisory/ntap-20240503-0006/
46
/ 100
moderate-risk
Severity
26/34 · High
Exploitability
1/34 · Minimal
Exposure
19/34 · Moderate