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 load.
This issue affects BIND 9 versions 9.18.0 through 9.18.18 and 9.18.11-S1 through 9.18.18-S1.
ProviderTypeBase ScoreAtk. VectorAtk. ComplexityPriv. RequiredVector
NISTNIST
7.5 HIGH
NETWORK
LOW
NONE
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
iscCNA
7.5 HIGH
NETWORK
LOW
NONE
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
CVEADP
---
---
Base Score
CVSS 3.x
EPSS Score
Percentile: 33%
VendorProductVersion
iscbind
9.18.0 ≤
𝑥
< 9.18.18
iscbind
9.18.11:s1
iscbind
9.18.18:s1
debiandebian_linux
10.0
debiandebian_linux
11.0
netapph300s_firmware
-
netapph500s_firmware
-
netapph700s_firmware
-
netapph410s_firmware
-
netapph410c_firmware
-
𝑥
= Vulnerable software versions
Debian logo
Debian Releases
Debian Product
Codename
bind9
bullseye
1:9.16.50-1~deb11u2
not-affected
buster
not-affected
bullseye (security)
1:9.16.50-1~deb11u1
fixed
bookworm
1:9.18.28-1~deb12u2
fixed
bookworm (security)
1:9.18.28-1~deb12u2
fixed
sid
1:9.20.4-3
fixed
trixie
1:9.20.4-3
fixed
Ubuntu logo
Ubuntu Releases
Ubuntu Product
Codename
bind9
oracular
Fixed 1:9.18.18-0ubuntu2
released
noble
Fixed 1:9.18.18-0ubuntu2
released
mantic
Fixed 1:9.18.18-0ubuntu2
released
lunar
Fixed 1:9.18.12-1ubuntu1.2
released
jammy
Fixed 1:9.18.12-0ubuntu0.22.04.3
released
focal
not-affected
bionic
not-affected
xenial
not-affected
trusty
not-affected
isc-dhcp
oracular
not-affected
noble
not-affected
mantic
not-affected
lunar
not-affected
jammy
not-affected
focal
not-affected
bionic
needs-triage
xenial
not-affected
trusty
not-affected