CVE-2023-4236

named may terminate unexpectedly under high DNS-over-TLS query load

High · published September 20, 2023

CVSS v3.1
7.5
EPSS
2%
Percentile
82.4
In the wild
Unconfirmed
What it is

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.

The record
Technical detail
CVSS v3.1
7.5 · HIGH
Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
CVSS v4.0
Not supplied
EPSS
0.02207 · 82.4th percentile
Published
2023-09-20T12:32Z
EPSS history
Timeline
  • 20 SEP 12:32Z
    named may terminate unexpectedly under high DNS-over-TLS query load
    cvelistv5