Resource exhaustion in Isc Bind 9

CVE-2024-12705

Clients using DNS-over-HTTPS (DoH) can exhaust a DNS resolver's CPU and/or memory by flooding it with crafted valid or invalid HTTP/2 traffic. This issue affects BIND 9 versions 9.18.0 through 9.18.32, 9.20.0 through 9.20.4, 9.21.0 through 9.21.3, and 9.18.11-S1 through 9.18.32-S1.

Published · last modified .

CVSS v3 metric

CVSS v3 base score 7.5 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H.

EPSS exploit prediction

EPSS: 0.184 (97.1th percentile), scored .

Moderate probability of exploitation in the next 30 days — watch for active exploitation reports. 97th percentile — 97.1% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS trend (30 days)EPSS over the last 30 days for CVE-2024-12705: held from 0.179 to 0.184.

EPSS over last 30 days · oldest: 0.179 · newest: 0.184 · change: +0.004

Affected products

Weakness classification (CWE)

Public proof-of-concept exploits

References

Frequently asked questions

What is CVE-2024-12705?
CVE-2024-12705 is a high-severity vulnerability in Isc Bind 9, classified under Allocation of Resources Without Limits or Throttling. CVSS score: 7.5/10. Published 2025-01-29.
How severe is CVE-2024-12705?
High severity. CVSS v3 base score is 7.5 out of 10.
Is CVE-2024-12705 known to be exploited?
2 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.