HOMEVULNERABILITIESCVE-2023-4408
HIGH

CVE-2023-4408

NVD-CWE-noinfoPublished: February 13, 2024· Updated: Jun 17, 2026

7.5
CVSS v3.1

Official 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.

NVD Source

Technical Analysis

CVE-2023-4408 can be exploited remotely over the network without requiring physical or adjacent access, significantly expanding the attack surface for threat actors.

The vulnerability requires no privileges and no user interaction, making it a prime target for automated exploitation campaigns and worm-like propagation.

A successful exploit results in availability disruption (denial of service), with a CVSS base score of 7.5.

CVSS v3.1 Vector Breakdown

Exploitability
Attack VectorNetwork
Attack ComplexityLow
Privileges Req.None
User InteractionNone
ScopeUnchanged
Impact
ConfidentialityNone
IntegrityNone
AvailabilityHigh
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Affected Vendors & Products

Fedora1 product(s)
fedora
isc1 product(s)
bind
netapp1 product(s)
ontap
Source: NVD CPE · 18 total CPE entries

Exploit & PoC Resources

NO KNOWN EXPLOITNo public exploit confirmed at this time
Exploit-DB
Offensive Security exploit database
GitHub PoC Search
Community PoC repositories
Rapid7 / Metasploit
Metasploit module search
PacketStorm
Security advisories & exploits
NVD Detail
Official NIST entry
MITRE CVE
CVE Program entry
External links open in a new tab. Always verify in a controlled environment before use.

Official Patches & Advisories

ADVISORYhttp://www.openwall.com/lists/oss-security/2024/02/13/1
ADVISORYhttps://kb.isc.org/docs/cve-2023-4408
ADVISORYhttps://lists.fedoraproject.org/archives/list/[email protected]/message/HVRDSJVZKMCXKKPP6PNR62T7RWZ3YSDZ/
ADVISORYhttps://lists.fedoraproject.org/archives/list/[email protected]/message/PNNHZSZPG2E7NBMBNYPGHCFI4V4XRWNQ/
ADVISORYhttps://lists.fedoraproject.org/archives/list/[email protected]/message/RGS7JN6FZXUSTC2XKQHH27574XOULYYJ/
ADVISORYhttps://lists.fedoraproject.org/archives/list/[email protected]/message/ZDZFMEKQTZ4L7RY46FCENWFB5MDT263R/
ADVISORYhttps://security.netapp.com/advisory/ntap-20240426-0001/
ADVISORYhttp://www.openwall.com/lists/oss-security/2024/02/13/1
ADVISORYhttps://kb.isc.org/docs/cve-2023-4408
ADVISORYhttps://lists.fedoraproject.org/archives/list/[email protected]/message/HVRDSJVZKMCXKKPP6PNR62T7RWZ3YSDZ/
ADVISORYhttps://lists.fedoraproject.org/archives/list/[email protected]/message/PNNHZSZPG2E7NBMBNYPGHCFI4V4XRWNQ/
ADVISORYhttps://lists.fedoraproject.org/archives/list/[email protected]/message/RGS7JN6FZXUSTC2XKQHH27574XOULYYJ/
ADVISORYhttps://lists.fedoraproject.org/archives/list/[email protected]/message/ZDZFMEKQTZ4L7RY46FCENWFB5MDT263R/
ADVISORYhttps://security.netapp.com/advisory/ntap-20240426-0001/

All References (14)

→
http://www.openwall.com/lists/oss-security/2024/02/13/1Mailing List · Third Party Advisory
→
https://kb.isc.org/docs/cve-2023-4408Vendor Advisory
→
https://lists.fedoraproject.org/archives/list/[email protected]/message/HVRDSJVZKMCXKKPP6PNR62T7RWZ3YSDZ/Mailing List · Third Party Advisory
→
https://lists.fedoraproject.org/archives/list/[email protected]/message/PNNHZSZPG2E7NBMBNYPGHCFI4V4XRWNQ/Mailing List · Third Party Advisory
→
https://lists.fedoraproject.org/archives/list/[email protected]/message/RGS7JN6FZXUSTC2XKQHH27574XOULYYJ/Mailing List · Third Party Advisory
→
https://lists.fedoraproject.org/archives/list/[email protected]/message/ZDZFMEKQTZ4L7RY46FCENWFB5MDT263R/Mailing List · Third Party Advisory
→
https://security.netapp.com/advisory/ntap-20240426-0001/Third Party Advisory
→
http://www.openwall.com/lists/oss-security/2024/02/13/1Mailing List · Third Party Advisory
→
https://kb.isc.org/docs/cve-2023-4408Vendor Advisory
→
https://lists.fedoraproject.org/archives/list/[email protected]/message/HVRDSJVZKMCXKKPP6PNR62T7RWZ3YSDZ/Mailing List · Third Party Advisory
→
https://lists.fedoraproject.org/archives/list/[email protected]/message/PNNHZSZPG2E7NBMBNYPGHCFI4V4XRWNQ/Mailing List · Third Party Advisory
→
https://lists.fedoraproject.org/archives/list/[email protected]/message/RGS7JN6FZXUSTC2XKQHH27574XOULYYJ/Mailing List · Third Party Advisory
→
https://lists.fedoraproject.org/archives/list/[email protected]/message/ZDZFMEKQTZ4L7RY46FCENWFB5MDT263R/Mailing List · Third Party Advisory
→
https://security.netapp.com/advisory/ntap-20240426-0001/Third Party Advisory

Quick Facts

CVE IDCVE-2023-4408
CVSS Score7.5 / 10
SeverityHIGH
WeaknessNVD-CWE-noinfo
CISA KEVNo
Affected3 vendor(s)
PublishedFeb 13, 2024

Related CVEs (NVD-CWE-noinfo)

CVE-2010-0071
10.0
CVE-2017-3623
10.0
CVE-2024-22216
10.0
CVE-2023-45894
10.0
CVE-2008-4873
10.0
CVE-2015-6787
10.0

Recommended Actions

  • →Apply vendor patches immediately
  • →Monitor CVE-2023-4408 in threat intel feeds
  • →Review IDS/IPS signatures for exploitation attempts
Data sourced from NVD (NIST), CISA KEV, and EPSS (FIRST). Analysis generated by CTIWATCH.COM. CVE data is provided under the NVD usage policy.
← All Vulnerabilities·Search for CVE-2023-4408·NVD