Is CVE-2023-4408 being actively exploited?

It is not currently in CISA's KEV catalog. Its EPSS exploitation probability is 1%.

What products does CVE-2023-4408 affect?

Tracked products affected include NetApp ONTAP. Check the version you run to see whether it is affected.

How do I fix CVE-2023-4408?

Apply the vendor fix promptly. Upgrade affected products to a fixed version.

CVE-2023-4408

Q: What is CVE-2023-4408?

CVE-2023-4408 is a high-severity software vulnerability (CWE-407) with a CVSS score of 7.5. 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 `na

HIGH severity · CVSS 7.5 · CWE-407

7.5CVSS HIGH

Summary

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.

Impact & exploitability

Attack vectorNetwork

Attack complexityLow

Privileges requiredNone

User interactionNone

Confidentiality impactNone

Integrity impactNone

Availability impactHigh

Exploit probability (EPSS)1%

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Affected products we track (1)

NetApp ONTAP

Recommendation

Apply the vendor fix promptly. Open any affected product above for its exact safe version.

CVE-2023-4408

Summary

Impact & exploitability

Affected products we track (1)

Recommendation

Additional information