CVE-2023-4236
named may terminate unexpectedly under high DNS-over-TLS query load
- State
- Published
- Severity
- 7.5 High
- Published
- Sep 20, 2023
- Updated
- Feb 13, 2025
- Reserved
- Aug 8, 2023
Description
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 load. This issue affects BIND 9 versions 9.18.0 through 9.18.18 and 9.18.11-S1 through 9.18.18-S1.
Scores
| CVSS | Score | Vector | Source |
|---|---|---|---|
| 3.1 | 7.5 High | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H | isc |
Weaknesses
The record names no weakness.
Affected Products
| Product | Versions |
|---|---|
BIND 9ISC |
|
References
- CVE-2023-4236vendor-advisory
- http://www.openwall.com/lists/oss-security/2023/09/20/2
- https://www.debian.org/security/2023/dsa-5504
- https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/IPJLLTJCSDJJII7IIZPLTBQNWP7MZH7F/
- https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/U35OARLQCPMVCBBPHWBXY5M6XJLD2TZ5/
- https://security.netapp.com/advisory/ntap-20231013-0004/
- https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/VSK5V4W4OHPM3JTJGWAQD6CZW7SFD75B/
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