CVE-2023-4408

HIGH EPSS 67.4%
Published Feb 13, 20242y ago · Modified Jun 17, 20261w ago
7.5 CVSS 3.1
High
Find Similar
Published Feb 13, 2024 2y ago
Last Modified Jun 17, 2026 1w ago

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.

CVSS Details

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

Threat Intelligence

EPSS Exploit Probability
67.4% percentile
Exploit & Patch Status
No Known Exploit
No Patch Available

Weaknesses 1

CWE-407

Affected Products 20

VendorProductVersionRange
netappontap9.14.1any
netappontap9.15.1any
fedoraprojectfedora38any
fedoraprojectfedora39any
iscbind*≥9.0.0  –  ≤9.16.45
iscbind*≥9.18.0  –  ≤9.18.21
iscbind*≥9.19.0  –  ≤9.19.19
iscbind9.9.3any
iscbind9.16.8any
iscbind9.16.11any
iscbind9.16.12any
iscbind9.16.13any
iscbind9.16.14any
iscbind9.16.21any
iscbind9.16.32any
iscbind9.16.36any
iscbind9.16.43any
iscbind9.18.0any
iscbind9.18.11any
iscbind9.18.18any

References 7

  • openwall.com http://www.openwall.com/lists/oss-security/2024/02/13/1
    Mailing ListThird Party Advisory
  • kb.isc.org https://kb.isc.org/docs/cve-2023-4408
    Vendor Advisory
  • lists.fedoraproject.org https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/HVRDSJVZKMCXKKPP6PNR62T7RWZ3YSDZ/
    Mailing ListThird Party Advisory
  • lists.fedoraproject.org https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/PNNHZSZPG2E7NBMBNYPGHCFI4V4XRWNQ/
    Mailing ListThird Party Advisory
  • lists.fedoraproject.org https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/RGS7JN6FZXUSTC2XKQHH27574XOULYYJ/
    Mailing ListThird Party Advisory
  • lists.fedoraproject.org https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/ZDZFMEKQTZ4L7RY46FCENWFB5MDT263R/
    Mailing ListThird Party Advisory
  • security.netapp.com https://security.netapp.com/advisory/ntap-20240426-0001/
    Third Party Advisory

Remediation

No remediation data recorded yet

Check vendor advisories and the NVD entry for patch availability.