Description
The DNS message parsing code in `named` includes a section whose computational complexity is overly high. It does not cause problems for typical DNS traffic, but crafted queries and responses may cause excessive CPU load on the affected `named` instance by exploiting this flaw. This issue affects both authoritative servers and recursive resolvers. This issue affects BIND 9 versions 9.0.0 through 9.16.45, 9.18.0 through 9.18.21, 9.19.0 through 9.19.19, 9.9.3-S1 through 9.11.37-S1, 9.16.8-S1 through 9.16.45-S1, and 9.18.11-S1 through 9.18.21-S1.
References (7)
Scores
CVSS v3
7.5
EPSS
0.0029
EPSS Percentile
52.7%
Attack Vector
NETWORK
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
CISA SSVC
Vulnrichment
Exploitation
none
Automatable
no
Technical Impact
partial
Details
CWE
CWE-407
Status
published
Products (18)
fedoraproject/fedora
38
fedoraproject/fedora
39
isc/bind
9.9.3 s1
isc/bind
9.16.8 s1
isc/bind
9.16.11 s1
isc/bind
9.16.12 s1
isc/bind
9.16.13 s1
isc/bind
9.16.14 s1
isc/bind
9.16.21 s1
isc/bind
9.16.32 s1
... and 8 more
Published
Feb 13, 2024
Tracked Since
Feb 18, 2026