Vulnerability in Isc Bind
CVE-2023-4236
A flaw in the networking code handling DNS-over-TLS queries may cause `named` to terminate unexpectedly due to an assertion failure. This happens when internal data structures are incorrectly reused under significant DNS-over-TLS query loa…
EPSS: 0.021 (80.1th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 7.5 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H.
Affected products
- Isc Bind — versions 9.18.11, 9.18.18
- Isc Bind 9 — versions 9.18.0, 9.18.11-S1
- Netapp H300s
- Netapp H300s_firmware
- Netapp H410c
- Netapp H410c_firmware
- Netapp H410s
- Netapp H410s_firmware
- Netapp H500s
- Netapp H500s_firmware
Weakness classification (CWE)
Public proof-of-concept exploits
References
- security-officer@isc.org (vendor-advisory, Vendor Advisory)
- security-officer@isc.org (Mailing List, Third Party Advisory)
- security-officer@isc.org (Third Party Advisory)
- security-officer@isc.org (Mailing List)
- security-officer@isc.org (Mailing List)
- security-officer@isc.org (Third Party Advisory)
- security-officer@isc.org (Mailing List, Third Party Advisory)
Frequently asked questions
- What is CVE-2023-4236?
- CVE-2023-4236 is a high-severity vulnerability in Isc Bind, classified under Reachable Assertion. CVSS score: 7.5/10. Published 2023-09-20.
- How severe is CVE-2023-4236?
- High severity. CVSS v3 base score is 7.5 out of 10.
- Is CVE-2023-4236 known to be exploited?
- 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.