Vulnerability 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 Score
HIGH
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Netapp | Ontap | 9.14.1 |
| Fedoraproject | Fedora | 38 |
| Isc | Bind | >= 9.0.0, <= 9.16.45 |
Related Weaknesses (CWE)
References
- http://www.openwall.com/lists/oss-security/2024/02/13/1Mailing ListThird Party Advisory
- https://kb.isc.org/docs/cve-2023-4408Vendor Advisory
- https://lists.fedoraproject.org/archives/list/[email protected]Mailing ListThird Party Advisory
- https://lists.fedoraproject.org/archives/list/[email protected]Mailing ListThird Party Advisory
- https://lists.fedoraproject.org/archives/list/[email protected]Mailing ListThird Party Advisory
- https://lists.fedoraproject.org/archives/list/[email protected]Mailing ListThird Party Advisory
- https://security.netapp.com/advisory/ntap-20240426-0001/Third Party Advisory
- http://www.openwall.com/lists/oss-security/2024/02/13/1Mailing ListThird Party Advisory
- https://kb.isc.org/docs/cve-2023-4408Vendor Advisory
- https://lists.fedoraproject.org/archives/list/[email protected]Mailing ListThird Party Advisory
- https://lists.fedoraproject.org/archives/list/[email protected]Mailing ListThird Party Advisory
- https://lists.fedoraproject.org/archives/list/[email protected]Mailing ListThird Party Advisory
- https://lists.fedoraproject.org/archives/list/[email protected]Mailing ListThird Party Advisory
- https://security.netapp.com/advisory/ntap-20240426-0001/Third Party Advisory
FAQ
What is CVE-2023-4408?
CVE-2023-4408 is a vulnerability with a CVSS score of 7.5 (HIGH). 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 caus...
How severe is CVE-2023-4408?
CVE-2023-4408 has been rated HIGH with a CVSS base score of 7.5/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2023-4408?
Check the references section above for vendor advisories and patch information. Affected products include: Netapp Ontap, Fedoraproject Fedora, Isc Bind.