Attacker Value
Unknown
(0 users assessed)
Exploitability
Unknown
(0 users assessed)
User Interaction
None
Privileges Required
None
Attack Vector
Network
0

CVE-2023-4408

Disclosure Date: February 13, 2024 •
CVE-2023-4408 CVSS v3 Base Score: 7.5
Add MITRE ATT&CK tactics and techniques that apply to this CVE.

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.

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CVSS V3 Severity and Metrics
Base Score:
7.5 High
Impact Score:
3.6
Exploitability Score:
3.9
Vector:
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Attack Vector (AV):
Network
Attack Complexity (AC):
Low
Privileges Required (PR):
None
User Interaction (UI):
None
Scope (S):
Unchanged
Confidentiality (C):
None
Integrity (I):
None
Availability (A):
High

General Information

Offensive Application
Unknown
Utility Class
Unknown
Ports
Unknown
OS
Unknown
Vulnerable Versions
BIND 9 9.16.45
BIND 9 9.18.21
BIND 9 9.19.19
BIND 9 9.11.37-S1
BIND 9 9.16.45-S1
BIND 9 9.18.21-S1
Prerequisites
Unknown
Discovered By
Unknown
PoC Author
Unknown
Metasploit Module
Unknown
Reporter
Unknown

Vendors

  • fedoraproject,
  • isc,
  • netapp

Products

  • bind,
  • bind 9.16.11,
  • bind 9.16.12,
  • bind 9.16.13,
  • bind 9.16.14,
  • bind 9.16.21,
  • bind 9.16.32,
  • bind 9.16.36,
  • bind 9.16.43,
  • bind 9.16.8,
  • bind 9.18.0,
  • bind 9.18.11,
  • bind 9.18.18,
  • bind 9.9.3,
  • fedora 38,
  • fedora 39,
  • ontap 9.14.1,
  • ontap 9.15.1
Technical Analysis