High severity · published Feb 13, 2024
CVE-2023-4408
The DNS message parsing code in `named` includes a section whose computational complexity is overly high
7.5
CVSS
1.4%
EPSS
No
On KEV
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 vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Attack vector
Network
Complexity
Low
Privileges
None
User interaction
None
Confidentiality
None
Integrity
None
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)1.4% · higher than 72% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
BI
Bind · Isc
9.0.0 through 9.16.45; 9.18.0 through 9.18.21; 9.19.0 through 9.19.19; 9.9.3; 9.16.8; 9.16.11; +10 more · source: NVD
FE
Fedora · Fedoraproject
38; 39 · source: NVD
ON
Ontap · Netapp
9.14.1; 9.15.1 · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2023-4408
CVE.org
https://www.cve.org/CVERecord?id=CVE-2023-4408
Mailing List
http://www.openwall.com/lists/oss-security/2024/02/13/1
Vendor Advisory
https://kb.isc.org/docs/cve-2023-4408
Mailing List
https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/HVRDSJVZKMCXKKPP6PNR62T7RWZ3YSDZ/
Mailing List
https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/PNNHZSZPG2E7NBMBNYPGHCFI4V4XRWNQ/
Mailing List
https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/RGS7JN6FZXUSTC2XKQHH27574XOULYYJ/
Mailing List
https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/ZDZFMEKQTZ4L7RY46FCENWFB5MDT263R/
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